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Merge branch 'pci/msi-affinity' into next

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Conflicts:
	drivers/nvme/host/pci.c
This commit is contained in:
Bjorn Helgaas 2016-08-01 12:34:01 -05:00
commit 9454c23852
1008 changed files with 10024 additions and 6416 deletions
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6
.mailmap
View File

@ -21,6 +21,7 @@ Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andrew Morton <akpm@linux-foundation.org>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andy Adamson <andros@citi.umich.edu>
Antoine Tenart <antoine.tenart@free-electrons.com>
Antonio Ospite <ao2@ao2.it> <ao2@amarulasolutions.com>
Archit Taneja <archit@ti.com>
Arnaud Patard <arnaud.patard@rtp-net.org>
@ -30,6 +31,9 @@ Axel Lin <axel.lin@gmail.com>
Ben Gardner <bgardner@wabtec.com>
Ben M Cahill <ben.m.cahill@intel.com>
Björn Steinbrink <B.Steinbrink@gmx.de>
Boris Brezillon <boris.brezillon@free-electrons.com>
Boris Brezillon <boris.brezillon@free-electrons.com> <b.brezillon.dev@gmail.com>
Boris Brezillon <boris.brezillon@free-electrons.com> <b.brezillon@overkiz.com>
Brian Avery <b.avery@hp.com>
Brian King <brking@us.ibm.com>
Christoph Hellwig <hch@lst.de>
@ -89,6 +93,7 @@ Leonid I Ananiev <leonid.i.ananiev@intel.com>
Linas Vepstas <linas@austin.ibm.com>
Mark Brown <broonie@sirena.org.uk>
Matthieu CASTET <castet.matthieu@free.fr>
Mauro Carvalho Chehab <mchehab@kernel.org> <maurochehab@gmail.com> <mchehab@infradead.org> <mchehab@redhat.com> <m.chehab@samsung.com> <mchehab@osg.samsung.com> <mchehab@s-opensource.com>
Mayuresh Janorkar <mayur@ti.com>
Michael Buesch <m@bues.ch>
Michel Dänzer <michel@tungstengraphics.com>
@ -122,6 +127,7 @@ Santosh Shilimkar <santosh.shilimkar@oracle.org>
Sascha Hauer <s.hauer@pengutronix.de>
S.Çağlar Onur <caglar@pardus.org.tr>
Shiraz Hashim <shiraz.linux.kernel@gmail.com> <shiraz.hashim@st.com>
Shuah Khan <shuah@kernel.org> <shuahkhan@gmail.com> <shuah.khan@hp.com> <shuahkh@osg.samsung.com> <shuah.kh@samsung.com>
Simon Kelley <simon@thekelleys.org.uk>
Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr>
Stephen Hemminger <shemminger@osdl.org>

1
CREDITS
View File

@ -649,6 +649,7 @@ D: Configure, Menuconfig, xconfig
N: Mauro Carvalho Chehab
E: m.chehab@samsung.org
E: mchehab@osg.samsung.com
E: mchehab@infradead.org
D: Media subsystem (V4L/DVB) drivers and core
D: EDAC drivers and EDAC 3.0 core rework

58
Documentation/ABI/testing/configfs-usb-gadget-uvc
View File

@ -1,6 +1,6 @@
What: /config/usb-gadget/gadget/functions/uvc.name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: UVC function directory
streaming_maxburst - 0..15 (ss only)
@ -9,37 +9,37 @@ Description: UVC function directory
What: /config/usb-gadget/gadget/functions/uvc.name/control
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Control descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/class
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/class/ss
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Super speed control class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/class/fs
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Full speed control class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Terminal descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Output terminal descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output/default
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Default output terminal descriptors
All attributes read only:
@ -53,12 +53,12 @@ Description: Default output terminal descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Camera terminal descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera/default
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Default camera terminal descriptors
All attributes read only:
@ -75,12 +75,12 @@ Description: Default camera terminal descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/processing
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Processing unit descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/processing/default
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Default processing unit descriptors
All attributes read only:
@ -94,49 +94,49 @@ Description: Default processing unit descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/header
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Control header descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/control/header/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific control header descriptors
dwClockFrequency
bcdUVC
What: /config/usb-gadget/gadget/functions/uvc.name/streaming
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Streaming descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Streaming class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/ss
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Super speed streaming class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/hs
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: High speed streaming class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/fs
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Full speed streaming class descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Color matching descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/default
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Default color matching descriptors
All attributes read only:
@ -150,12 +150,12 @@ Description: Default color matching descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: MJPEG format descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific MJPEG format descriptors
All attributes read only,
@ -174,7 +174,7 @@ Description: Specific MJPEG format descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific MJPEG frame descriptors
dwFrameInterval - indicates how frame interval can be
@ -196,12 +196,12 @@ Description: Specific MJPEG frame descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Uncompressed format descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific uncompressed format descriptors
bmaControls - this format's data for bmaControls in
@ -221,7 +221,7 @@ Description: Specific uncompressed format descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific uncompressed frame descriptors
dwFrameInterval - indicates how frame interval can be
@ -243,12 +243,12 @@ Description: Specific uncompressed frame descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Streaming header descriptors
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header/name
Date: Dec 2014
KernelVersion: 3.20
KernelVersion: 4.0
Description: Specific streaming header descriptors
All attributes read only:

2
Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935
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@ -1,4 +1,4 @@
What /sys/bus/iio/devices/iio:deviceX/in_proximity_raw
What /sys/bus/iio/devices/iio:deviceX/in_proximity_input
Date: March 2014
KernelVersion: 3.15
Contact: Matt Ranostay <mranostay@gmail.com>

469
Documentation/PCI/MSI-HOWTO.txt
View File

@ -78,422 +78,111 @@ CONFIG_PCI_MSI option.
4.2 Using MSI
Most of the hard work is done for the driver in the PCI layer. It simply
has to request that the PCI layer set up the MSI capability for this
Most of the hard work is done for the driver in the PCI layer. The driver
simply has to request that the PCI layer set up the MSI capability for this
device.
4.2.1 pci_enable_msi
To automatically use MSI or MSI-X interrupt vectors, use the following
function:
int pci_enable_msi(struct pci_dev *dev)
int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
unsigned int max_vecs, unsigned int flags);
A successful call allocates ONE interrupt to the device, regardless
of how many MSIs the device supports. The device is switched from
pin-based interrupt mode to MSI mode. The dev->irq number is changed
to a new number which represents the message signaled interrupt;
consequently, this function should be called before the driver calls
request_irq(), because an MSI is delivered via a vector that is
different from the vector of a pin-based interrupt.
which allocates up to max_vecs interrupt vectors for a PCI device. It
returns the number of vectors allocated or a negative error. If the device
has a requirements for a minimum number of vectors the driver can pass a
min_vecs argument set to this limit, and the PCI core will return -ENOSPC
if it can't meet the minimum number of vectors.
4.2.2 pci_enable_msi_range
The flags argument should normally be set to 0, but can be used to pass the
PCI_IRQ_NOMSI and PCI_IRQ_NOMSIX flag in case a device claims to support
MSI or MSI-X, but the support is broken, or to pass PCI_IRQ_NOLEGACY in
case the device does not support legacy interrupt lines.
int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec)
By default this function will spread the interrupts around the available
CPUs, but this feature can be disabled by passing the PCI_IRQ_NOAFFINITY
flag.
This function allows a device driver to request any number of MSI
interrupts within specified range from 'minvec' to 'maxvec'.
To get the Linux IRQ numbers passed to request_irq() and free_irq() and the
vectors, use the following function:
If this function returns a positive number it indicates the number of
MSI interrupts that have been successfully allocated. In this case
the device is switched from pin-based interrupt mode to MSI mode and
updates dev->irq to be the lowest of the new interrupts assigned to it.
The other interrupts assigned to the device are in the range dev->irq
to dev->irq + returned value - 1. Device driver can use the returned
number of successfully allocated MSI interrupts to further allocate
and initialize device resources.
int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
If this function returns a negative number, it indicates an error and
the driver should not attempt to request any more MSI interrupts for
this device.
Any allocated resources should be freed before removing the device using
the following function:
This function should be called before the driver calls request_irq(),
because MSI interrupts are delivered via vectors that are different
from the vector of a pin-based interrupt.
void pci_free_irq_vectors(struct pci_dev *dev);
It is ideal if drivers can cope with a variable number of MSI interrupts;
there are many reasons why the platform may not be able to provide the
exact number that a driver asks for.
If a device supports both MSI-X and MSI capabilities, this API will use the
MSI-X facilities in preference to the MSI facilities. MSI-X supports any
number of interrupts between 1 and 2048. In contrast, MSI is restricted to
a maximum of 32 interrupts (and must be a power of two). In addition, the
MSI interrupt vectors must be allocated consecutively, so the system might
not be able to allocate as many vectors for MSI as it could for MSI-X. On
some platforms, MSI interrupts must all be targeted at the same set of CPUs
whereas MSI-X interrupts can all be targeted at different CPUs.
There could be devices that can not operate with just any number of MSI
interrupts within a range. See chapter 4.3.1.3 to get the idea how to
handle such devices for MSI-X - the same logic applies to MSI.
If a device supports neither MSI-X or MSI it will fall back to a single
legacy IRQ vector.
4.2.1.1 Maximum possible number of MSI interrupts
The typical usage of MSI or MSI-X interrupts is to allocate as many vectors
as possible, likely up to the limit supported by the device. If nvec is
larger than the number supported by the device it will automatically be
capped to the supported limit, so there is no need to query the number of
vectors supported beforehand:
The typical usage of MSI interrupts is to allocate as many vectors as
possible, likely up to the limit returned by pci_msi_vec_count() function:
static int foo_driver_enable_msi(struct pci_dev *pdev, int nvec)
{
return pci_enable_msi_range(pdev, 1, nvec);
}
Note the value of 'minvec' parameter is 1. As 'minvec' is inclusive,
the value of 0 would be meaningless and could result in error.
Some devices have a minimal limit on number of MSI interrupts.
In this case the function could look like this:
static int foo_driver_enable_msi(struct pci_dev *pdev, int nvec)
{
return pci_enable_msi_range(pdev, FOO_DRIVER_MINIMUM_NVEC, nvec);
}
4.2.1.2 Exact number of MSI interrupts
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, 0);
if (nvec < 0)
goto out_err;
If a driver is unable or unwilling to deal with a variable number of MSI
interrupts it could request a particular number of interrupts by passing
that number to pci_enable_msi_range() function as both 'minvec' and 'maxvec'
parameters:
interrupts it can request a particular number of interrupts by passing that
number to pci_alloc_irq_vectors() function as both 'min_vecs' and
'max_vecs' parameters:
static int foo_driver_enable_msi(struct pci_dev *pdev, int nvec)
{
return pci_enable_msi_range(pdev, nvec, nvec);
}
ret = pci_alloc_irq_vectors(pdev, nvec, nvec, 0);
if (ret < 0)
goto out_err;
Note, unlike pci_enable_msi_exact() function, which could be also used to
enable a particular number of MSI-X interrupts, pci_enable_msi_range()
returns either a negative errno or 'nvec' (not negative errno or 0 - as
pci_enable_msi_exact() does).
The most notorious example of the request type described above is enabling
the single MSI mode for a device. It could be done by passing two 1s as
'min_vecs' and 'max_vecs':
4.2.1.3 Single MSI mode
ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);
if (ret < 0)
goto out_err;
The most notorious example of the request type described above is
enabling the single MSI mode for a device. It could be done by passing
two 1s as 'minvec' and 'maxvec':
Some devices might not support using legacy line interrupts, in which case
the PCI_IRQ_NOLEGACY flag can be used to fail the request if the platform
can't provide MSI or MSI-X interrupts:
static int foo_driver_enable_single_msi(struct pci_dev *pdev)
{
return pci_enable_msi_range(pdev, 1, 1);
}
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_NOLEGACY);
if (nvec < 0)
goto out_err;
Note, unlike pci_enable_msi() function, which could be also used to
enable the single MSI mode, pci_enable_msi_range() returns either a
negative errno or 1 (not negative errno or 0 - as pci_enable_msi()
does).
4.3 Legacy APIs
4.2.3 pci_enable_msi_exact
The following old APIs to enable and disable MSI or MSI-X interrupts should
not be used in new code:
int pci_enable_msi_exact(struct pci_dev *dev, int nvec)
pci_enable_msi() /* deprecated */
pci_enable_msi_range() /* deprecated */
pci_enable_msi_exact() /* deprecated */
pci_disable_msi() /* deprecated */
pci_enable_msix_range() /* deprecated */
pci_enable_msix_exact() /* deprecated */
pci_disable_msix() /* deprecated */
This variation on pci_enable_msi_range() call allows a device driver to
request exactly 'nvec' MSIs.
Additionally there are APIs to provide the number of supported MSI or MSI-X
vectors: pci_msi_vec_count() and pci_msix_vec_count(). In general these
should be avoided in favor of letting pci_alloc_irq_vectors() cap the
number of vectors. If you have a legitimate special use case for the count
of vectors we might have to revisit that decision and add a
pci_nr_irq_vectors() helper that handles MSI and MSI-X transparently.
If this function returns a negative number, it indicates an error and
the driver should not attempt to request any more MSI interrupts for
this device.
4.4 Considerations when using MSIs
By contrast with pci_enable_msi_range() function, pci_enable_msi_exact()
returns zero in case of success, which indicates MSI interrupts have been
successfully allocated.
4.2.4 pci_disable_msi
void pci_disable_msi(struct pci_dev *dev)
This function should be used to undo the effect of pci_enable_msi_range().
Calling it restores dev->irq to the pin-based interrupt number and frees
the previously allocated MSIs. The interrupts may subsequently be assigned
to another device, so drivers should not cache the value of dev->irq.
Before calling this function, a device driver must always call free_irq()
on any interrupt for which it previously called request_irq().
Failure to do so results in a BUG_ON(), leaving the device with
MSI enabled and thus leaking its vector.
4.2.4 pci_msi_vec_count
int pci_msi_vec_count(struct pci_dev *dev)
This function could be used to retrieve the number of MSI vectors the
device requested (via the Multiple Message Capable register). The MSI
specification only allows the returned value to be a power of two,
up to a maximum of 2^5 (32).
If this function returns a negative number, it indicates the device is
not capable of sending MSIs.
If this function returns a positive number, it indicates the maximum
number of MSI interrupt vectors that could be allocated.
4.3 Using MSI-X
The MSI-X capability is much more flexible than the MSI capability.
It supports up to 2048 interrupts, each of which can be controlled
independently. To support this flexibility, drivers must use an array of
`struct msix_entry':
struct msix_entry {
u16 vector; /* kernel uses to write alloc vector */
u16 entry; /* driver uses to specify entry */
};
This allows for the device to use these interrupts in a sparse fashion;
for example, it could use interrupts 3 and 1027 and yet allocate only a
two-element array. The driver is expected to fill in the 'entry' value
in each element of the array to indicate for which entries the kernel
should assign interrupts; it is invalid to fill in two entries with the
same number.
4.3.1 pci_enable_msix_range
int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
int minvec, int maxvec)
Calling this function asks the PCI subsystem to allocate any number of
MSI-X interrupts within specified range from 'minvec' to 'maxvec'.
The 'entries' argument is a pointer to an array of msix_entry structs
which should be at least 'maxvec' entries in size.
On success, the device is switched into MSI-X mode and the function
returns the number of MSI-X interrupts that have been successfully
allocated. In this case the 'vector' member in entries numbered from
0 to the returned value - 1 is populated with the interrupt number;
the driver should then call request_irq() for each 'vector' that it
decides to use. The device driver is responsible for keeping track of the
interrupts assigned to the MSI-X vectors so it can free them again later.
Device driver can use the returned number of successfully allocated MSI-X
interrupts to further allocate and initialize device resources.
If this function returns a negative number, it indicates an error and
the driver should not attempt to allocate any more MSI-X interrupts for
this device.
This function, in contrast with pci_enable_msi_range(), does not adjust
dev->irq. The device will not generate interrupts for this interrupt
number once MSI-X is enabled.
Device drivers should normally call this function once per device
during the initialization phase.
It is ideal if drivers can cope with a variable number of MSI-X interrupts;
there are many reasons why the platform may not be able to provide the
exact number that a driver asks for.
There could be devices that can not operate with just any number of MSI-X
interrupts within a range. E.g., an network adapter might need let's say
four vectors per each queue it provides. Therefore, a number of MSI-X
interrupts allocated should be a multiple of four. In this case interface
pci_enable_msix_range() can not be used alone to request MSI-X interrupts
(since it can allocate any number within the range, without any notion of
the multiple of four) and the device driver should master a custom logic
to request the required number of MSI-X interrupts.
4.3.1.1 Maximum possible number of MSI-X interrupts
The typical usage of MSI-X interrupts is to allocate as many vectors as
possible, likely up to the limit returned by pci_msix_vec_count() function:
static int foo_driver_enable_msix(struct foo_adapter *adapter, int nvec)
{
return pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1, nvec);
}
Note the value of 'minvec' parameter is 1. As 'minvec' is inclusive,
the value of 0 would be meaningless and could result in error.
Some devices have a minimal limit on number of MSI-X interrupts.
In this case the function could look like this:
static int foo_driver_enable_msix(struct foo_adapter *adapter, int nvec)
{
return pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
FOO_DRIVER_MINIMUM_NVEC, nvec);
}
4.3.1.2 Exact number of MSI-X interrupts
If a driver is unable or unwilling to deal with a variable number of MSI-X
interrupts it could request a particular number of interrupts by passing
that number to pci_enable_msix_range() function as both 'minvec' and 'maxvec'
parameters:
static int foo_driver_enable_msix(struct foo_adapter *adapter, int nvec)
{
return pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
nvec, nvec);
}
Note, unlike pci_enable_msix_exact() function, which could be also used to
enable a particular number of MSI-X interrupts, pci_enable_msix_range()
returns either a negative errno or 'nvec' (not negative errno or 0 - as
pci_enable_msix_exact() does).
4.3.1.3 Specific requirements to the number of MSI-X interrupts
As noted above, there could be devices that can not operate with just any
number of MSI-X interrupts within a range. E.g., let's assume a device that
is only capable sending the number of MSI-X interrupts which is a power of
two. A routine that enables MSI-X mode for such device might look like this:
/*
* Assume 'minvec' and 'maxvec' are non-zero
*/
static int foo_driver_enable_msix(struct foo_adapter *adapter,
int minvec, int maxvec)
{
int rc;
minvec = roundup_pow_of_two(minvec);
maxvec = rounddown_pow_of_two(maxvec);
if (minvec > maxvec)
return -ERANGE;
retry:
rc = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
maxvec, maxvec);
/*
* -ENOSPC is the only error code allowed to be analyzed
*/
if (rc == -ENOSPC) {
if (maxvec == 1)
return -ENOSPC;
maxvec /= 2;
if (minvec > maxvec)
return -ENOSPC;
goto retry;
}
return rc;
}
Note how pci_enable_msix_range() return value is analyzed for a fallback -
any error code other than -ENOSPC indicates a fatal error and should not
be retried.
4.3.2 pci_enable_msix_exact
int pci_enable_msix_exact(struct pci_dev *dev,
struct msix_entry *entries, int nvec)
This variation on pci_enable_msix_range() call allows a device driver to
request exactly 'nvec' MSI-Xs.
If this function returns a negative number, it indicates an error and
the driver should not attempt to allocate any more MSI-X interrupts for
this device.
By contrast with pci_enable_msix_range() function, pci_enable_msix_exact()
returns zero in case of success, which indicates MSI-X interrupts have been
successfully allocated.
Another version of a routine that enables MSI-X mode for a device with
specific requirements described in chapter 4.3.1.3 might look like this:
/*
* Assume 'minvec' and 'maxvec' are non-zero
*/
static int foo_driver_enable_msix(struct foo_adapter *adapter,
int minvec, int maxvec)
{
int rc;
minvec = roundup_pow_of_two(minvec);
maxvec = rounddown_pow_of_two(maxvec);
if (minvec > maxvec)
return -ERANGE;
retry:
rc = pci_enable_msix_exact(adapter->pdev,
adapter->msix_entries, maxvec);
/*
* -ENOSPC is the only error code allowed to be analyzed
*/
if (rc == -ENOSPC) {
if (maxvec == 1)
return -ENOSPC;
maxvec /= 2;
if (minvec > maxvec)
return -ENOSPC;
goto retry;
} else if (rc < 0) {
return rc;
}
return maxvec;
}
4.3.3 pci_disable_msix
void pci_disable_msix(struct pci_dev *dev)
This function should be used to undo the effect of pci_enable_msix_range().
It frees the previously allocated MSI-X interrupts. The interrupts may
subsequently be assigned to another device, so drivers should not cache
the value of the 'vector' elements over a call to pci_disable_msix().
Before calling this function, a device driver must always call free_irq()
on any interrupt for which it previously called request_irq().
Failure to do so results in a BUG_ON(), leaving the device with
MSI-X enabled and thus leaking its vector.
4.3.3 The MSI-X Table
The MSI-X capability specifies a BAR and offset within that BAR for the
MSI-X Table. This address is mapped by the PCI subsystem, and should not
be accessed directly by the device driver. If the driver wishes to
mask or unmask an interrupt, it should call disable_irq() / enable_irq().
4.3.4 pci_msix_vec_count
int pci_msix_vec_count(struct pci_dev *dev)
This function could be used to retrieve number of entries in the device
MSI-X table.
If this function returns a negative number, it indicates the device is
not capable of sending MSI-Xs.
If this function returns a positive number, it indicates the maximum
number of MSI-X interrupt vectors that could be allocated.
4.4 Handling devices implementing both MSI and MSI-X capabilities
If a device implements both MSI and MSI-X capabilities, it can
run in either MSI mode or MSI-X mode, but not both simultaneously.
This is a requirement of the PCI spec, and it is enforced by the
PCI layer. Calling pci_enable_msi_range() when MSI-X is already
enabled or pci_enable_msix_range() when MSI is already enabled
results in an error. If a device driver wishes to switch between MSI
and MSI-X at runtime, it must first quiesce the device, then switch
it back to pin-interrupt mode, before calling pci_enable_msi_range()
or pci_enable_msix_range() and resuming operation. This is not expected
to be a common operation but may be useful for debugging or testing
during development.
4.5 Considerations when using MSIs
4.5.1 Choosing between MSI-X and MSI
If your device supports both MSI-X and MSI capabilities, you should use
the MSI-X facilities in preference to the MSI facilities. As mentioned
above, MSI-X supports any number of interrupts between 1 and 2048.
In contrast, MSI is restricted to a maximum of 32 interrupts (and
must be a power of two). In addition, the MSI interrupt vectors must
be allocated consecutively, so the system might not be able to allocate
as many vectors for MSI as it could for MSI-X. On some platforms, MSI
interrupts must all be targeted at the same set of CPUs whereas MSI-X
interrupts can all be targeted at different CPUs.
4.5.2 Spinlocks
4.4.1 Spinlocks
Most device drivers have a per-device spinlock which is taken in the
interrupt handler. With pin-based interrupts or a single MSI, it is not
@ -505,7 +194,7 @@ acquire the spinlock. Such deadlocks can be avoided by using
spin_lock_irqsave() or spin_lock_irq() which disable local interrupts
and acquire the lock (see Documentation/DocBook/kernel-locking).
4.6 How to tell whether MSI/MSI-X is enabled on a device
4.5 How to tell whether MSI/MSI-X is enabled on a device
Using 'lspci -v' (as root) may show some devices with "MSI", "Message
Signalled Interrupts" or "MSI-X" capabilities. Each of these capabilities

1
Documentation/devicetree/bindings/hwmon/ina2xx.txt
View File

@ -7,6 +7,7 @@ Required properties:
- "ti,ina220" for ina220
- "ti,ina226" for ina226
- "ti,ina230" for ina230
- "ti,ina231" for ina231
- reg: I2C address
Optional properties:

4
Documentation/devicetree/bindings/i2c/i2c-arb-gpio-challenge.txt
View File

@ -44,8 +44,8 @@ Required properties:
- our-claim-gpio: The GPIO that we use to claim the bus.
- their-claim-gpios: The GPIOs that the other sides use to claim the bus.
Note that some implementations may only support a single other master.
- Standard I2C mux properties. See mux.txt in this directory.
- Single I2C child bus node at reg 0. See mux.txt in this directory.
- Standard I2C mux properties. See i2c-mux.txt in this directory.
- Single I2C child bus node at reg 0. See i2c-mux.txt in this directory.
Optional properties:
- slew-delay-us: microseconds to wait for a GPIO to go high. Default is 10 us.

3
Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.txt
View File

@ -27,7 +27,8 @@ Required properties:
- i2c-bus-name: The name of this bus. Also needed as pinctrl-name for the I2C
parents.
Furthermore, I2C mux properties and child nodes. See mux.txt in this directory.
Furthermore, I2C mux properties and child nodes. See i2c-mux.txt in this
directory.
Example:

6
Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt
View File

@ -22,8 +22,8 @@ Required properties:
- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side
port is connected to.
- mux-gpios: list of gpios used to control the muxer
* Standard I2C mux properties. See mux.txt in this directory.
* I2C child bus nodes. See mux.txt in this directory.
* Standard I2C mux properties. See i2c-mux.txt in this directory.
* I2C child bus nodes. See i2c-mux.txt in this directory.
Optional properties:
- idle-state: value to set the muxer to when idle. When no value is
@ -33,7 +33,7 @@ For each i2c child node, an I2C child bus will be created. They will
be numbered based on their order in the device tree.
Whenever an access is made to a device on a child bus, the value set
in the revelant node's reg property will be output using the list of
in the relevant node's reg property will be output using the list of
GPIOs, the first in the list holding the least-significant value.
If an idle state is defined, using the idle-state (optional) property,

4
Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.txt
View File

@ -28,9 +28,9 @@ Also required are:
* Standard pinctrl properties that specify the pin mux state for each child
bus. See ../pinctrl/pinctrl-bindings.txt.
* Standard I2C mux properties. See mux.txt in this directory.
* Standard I2C mux properties. See i2c-mux.txt in this directory.
* I2C child bus nodes. See mux.txt in this directory.
* I2C child bus nodes. See i2c-mux.txt in this directory.
For each named state defined in the pinctrl-names property, an I2C child bus
will be created. I2C child bus numbers are assigned based on the index into

6
Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt
View File

@ -7,8 +7,8 @@ Required properties:
- compatible: i2c-mux-reg
- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side
port is connected to.
* Standard I2C mux properties. See mux.txt in this directory.
* I2C child bus nodes. See mux.txt in this directory.
* Standard I2C mux properties. See i2c-mux.txt in this directory.
* I2C child bus nodes. See i2c-mux.txt in this directory.
Optional properties:
- reg: this pair of <offset size> specifies the register to control the mux.
@ -24,7 +24,7 @@ Optional properties:
given, it defaults to the last value used.
Whenever an access is made to a device on a child bus, the value set
in the revelant node's reg property will be output to the register.
in the relevant node's reg property will be output to the register.
If an idle state is defined, using the idle-state (optional) property,
whenever an access is not being made to a device on a child bus, the

8
Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
View File

@ -13,10 +13,10 @@ Optional properties:
initialization. This is an array of 28 values(u8).
- marvell,wakeup-pin: It represents wakeup pin number of the bluetooth chip.
firmware will use the pin to wakeup host system.
firmware will use the pin to wakeup host system (u16).
- marvell,wakeup-gap-ms: wakeup gap represents wakeup latency of the host
platform. The value will be configured to firmware. This
is needed to work chip's sleep feature as expected.
is needed to work chip's sleep feature as expected (u16).
- interrupt-parent: phandle of the parent interrupt controller
- interrupts : interrupt pin number to the cpu. Driver will request an irq based
on this interrupt number. During system suspend, the irq will be
@ -50,7 +50,7 @@ calibration data is also available in below example.
0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0xf0 0x00>;
marvell,wakeup-pin = <0x0d>;
marvell,wakeup-gap-ms = <0x64>;
marvell,wakeup-pin = /bits/ 16 <0x0d>;
marvell,wakeup-gap-ms = /bits/ 16 <0x64>;
};
};

2
Documentation/devicetree/bindings/vendor-prefixes.txt
View File

@ -255,6 +255,7 @@ synology Synology, Inc.
SUNW Sun Microsystems, Inc
tbs TBS Technologies
tcl Toby Churchill Ltd.
technexion TechNexion
technologic Technologic Systems
thine THine Electronics, Inc.
ti Texas Instruments
@ -269,6 +270,7 @@ tronsmart Tronsmart
truly Truly Semiconductors Limited
tyan Tyan Computer Corporation
upisemi uPI Semiconductor Corp.
uniwest United Western Technologies Corp (UniWest)
urt United Radiant Technology Corporation
usi Universal Scientific Industrial Co., Ltd.
v3 V3 Semiconductor

4
Documentation/leds/leds-class.txt
View File

@ -74,8 +74,8 @@ blink_set() function (see <linux/leds.h>). To set an LED to blinking,
however, it is better to use the API function led_blink_set(), as it
will check and implement software fallback if necessary.
To turn off blinking again, use the API function led_brightness_set()
as that will not just set the LED brightness but also stop any software
To turn off blinking, use the API function led_brightness_set()
with brightness value LED_OFF, which should stop any software
timers that may have been required for blinking.
The blink_set() function should choose a user friendly blinking value

8
Documentation/scsi/scsi_eh.txt
View File

@ -263,19 +263,23 @@ scmd->allowed.
3. scmd recovered
ACTION: scsi_eh_finish_cmd() is invoked to EH-finish scmd
- shost->host_failed--
- clear scmd->eh_eflags
- scsi_setup_cmd_retry()
- move from local eh_work_q to local eh_done_q
LOCKING: none
CONCURRENCY: at most one thread per separate eh_work_q to
keep queue manipulation lockless
4. EH completes
ACTION: scsi_eh_flush_done_q() retries scmds or notifies upper
layer of failure.
layer of failure. May be called concurrently but must have
a no more than one thread per separate eh_work_q to
manipulate the queue locklessly
- scmd is removed from eh_done_q and scmd->eh_entry is cleared
- if retry is necessary, scmd is requeued using
scsi_queue_insert()
- otherwise, scsi_finish_command() is invoked for scmd
- zero shost->host_failed
LOCKING: queue or finish function performs appropriate locking

81
MAINTAINERS
View File

@ -595,6 +595,10 @@ S: Odd Fixes
L: linux-alpha@vger.kernel.org
F: arch/alpha/
ALPS PS/2 TOUCHPAD DRIVER
R: Pali Rohár <pali.rohar@gmail.com>
F: drivers/input/mouse/alps.*
ALTERA MAILBOX DRIVER
M: Ley Foon Tan <lftan@altera.com>
L: nios2-dev@lists.rocketboards.org (moderated for non-subscribers)
@ -1159,6 +1163,7 @@ F: arch/arm/mach-footbridge/
ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
M: Shawn Guo <shawnguo@kernel.org>
M: Sascha Hauer <kernel@pengutronix.de>
R: Fabio Estevam <fabio.estevam@nxp.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git
@ -2242,7 +2247,8 @@ F: include/net/ax25.h
F: net/ax25/
AZ6007 DVB DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -2709,7 +2715,8 @@ F: Documentation/filesystems/btrfs.txt
F: fs/btrfs/
BTTV VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -2773,9 +2780,9 @@ F: include/net/caif/
F: net/caif/
CALGARY x86-64 IOMMU
M: Muli Ben-Yehuda <muli@il.ibm.com>
M: "Jon D. Mason" <jdmason@kudzu.us>
L: discuss@x86-64.org
M: Muli Ben-Yehuda <mulix@mulix.org>
M: Jon Mason <jdmason@kudzu.us>
L: iommu@lists.linux-foundation.org
S: Maintained
F: arch/x86/kernel/pci-calgary_64.c
F: arch/x86/kernel/tce_64.c
@ -3086,6 +3093,7 @@ M: Stephen Boyd <sboyd@codeaurora.org>
L: linux-clk@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
S: Maintained
F: Documentation/devicetree/bindings/clock/
F: drivers/clk/
X: drivers/clk/clkdev.c
F: include/linux/clk-pr*
@ -3343,7 +3351,8 @@ S: Maintained
F: drivers/media/dvb-frontends/cx24120*
CX88 VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -3773,6 +3782,7 @@ Q: https://patchwork.kernel.org/project/linux-dmaengine/list/
S: Maintained
F: drivers/dma/
F: include/linux/dmaengine.h
F: Documentation/devicetree/bindings/dma/
F: Documentation/dmaengine/
T: git git://git.infradead.org/users/vkoul/slave-dma.git
@ -4290,7 +4300,8 @@ F: fs/ecryptfs/
EDAC-CORE
M: Doug Thompson <dougthompson@xmission.com>
M: Borislav Petkov <bp@alien8.de>
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git for-next
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac.git linux_next
@ -4335,7 +4346,8 @@ S: Maintained
F: drivers/edac/e7xxx_edac.c
EDAC-GHES
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/ghes_edac.c
@ -4359,19 +4371,22 @@ S: Maintained
F: drivers/edac/i5000_edac.c
EDAC-I5400
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/i5400_edac.c
EDAC-I7300
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/i7300_edac.c
EDAC-I7CORE
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/i7core_edac.c
@ -4408,7 +4423,8 @@ S: Maintained
F: drivers/edac/r82600_edac.c
EDAC-SBRIDGE
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/sb_edac.c
@ -4467,7 +4483,8 @@ S: Maintained
F: drivers/net/ethernet/ibm/ehea/
EM28XX VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -6486,6 +6503,7 @@ F: include/uapi/linux/sunrpc/
KERNEL SELFTEST FRAMEWORK
M: Shuah Khan <shuahkh@osg.samsung.com>
M: Shuah Khan <shuah@kernel.org>
L: linux-kselftest@vger.kernel.org
T: git git://git.kernel.org/pub/scm/shuah/linux-kselftest
S: Maintained
@ -7357,7 +7375,8 @@ S: Supported
F: drivers/media/pci/netup_unidvb/*
MEDIA INPUT INFRASTRUCTURE (V4L/DVB)
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
P: LinuxTV.org Project
L: linux-media@vger.kernel.org
W: https://linuxtv.org
@ -7405,7 +7424,7 @@ F: drivers/scsi/megaraid.*
F: drivers/scsi/megaraid/
MELLANOX ETHERNET DRIVER (mlx4_en)
M: Eugenia Emantayev <eugenia@mellanox.com>
M: Tariq Toukan <tariqt@mellanox.com>
L: netdev@vger.kernel.org
S: Supported
W: http://www.mellanox.com
@ -8008,6 +8027,7 @@ Q: http://patchwork.kernel.org/project/linux-wireless/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git
S: Maintained
F: Documentation/devicetree/bindings/net/wireless/
F: drivers/net/wireless/
NETXEN (1/10) GbE SUPPORT
@ -8405,10 +8425,9 @@ F: drivers/i2c/busses/i2c-ocores.c
OPEN FIRMWARE AND FLATTENED DEVICE TREE
M: Rob Herring <robh+dt@kernel.org>
M: Frank Rowand <frowand.list@gmail.com>
M: Grant Likely <grant.likely@linaro.org>
L: devicetree@vger.kernel.org
W: http://www.devicetree.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
S: Maintained
F: drivers/of/
F: include/linux/of*.h
@ -8416,12 +8435,10 @@ F: scripts/dtc/
OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
M: Rob Herring <robh+dt@kernel.org>
M: Pawel Moll <pawel.moll@arm.com>
M: Mark Rutland <mark.rutland@arm.com>
M: Ian Campbell <ijc+devicetree@hellion.org.uk>
M: Kumar Gala <galak@codeaurora.org>
L: devicetree@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
Q: http://patchwork.ozlabs.org/project/devicetree-bindings/list/
S: Maintained
F: Documentation/devicetree/
F: arch/*/boot/dts/
@ -8963,6 +8980,7 @@ L: linux-gpio@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git
S: Maintained
F: Documentation/devicetree/bindings/pinctrl/
F: Documentation/pinctrl.txt
F: drivers/pinctrl/
F: include/linux/pinctrl/
@ -9870,7 +9888,8 @@ S: Odd Fixes
F: drivers/media/i2c/saa6588*
SAA7134 VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -10389,7 +10408,8 @@ S: Maintained
F: drivers/media/radio/si4713/radio-usb-si4713.c
SIANO DVB DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -11155,7 +11175,8 @@ S: Maintained
F: drivers/media/i2c/tda9840*
TEA5761 TUNER DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -11163,7 +11184,8 @@ S: Odd fixes
F: drivers/media/tuners/tea5761.*
TEA5767 TUNER DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -11550,7 +11572,8 @@ F: include/linux/shmem_fs.h
F: mm/shmem.c
TM6000 VIDEO4LINUX DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
@ -11904,7 +11927,8 @@ F: drivers/usb/common/usb-otg-fsm.c
USB OVER IP DRIVER
M: Valentina Manea <valentina.manea.m@gmail.com>
M: Shuah Khan <shuah.kh@samsung.com>
M: Shuah Khan <shuahkh@osg.samsung.com>
M: Shuah Khan <shuah@kernel.org>
L: linux-usb@vger.kernel.org
S: Maintained
F: Documentation/usb/usbip_protocol.txt
@ -11975,6 +11999,7 @@ L: linux-usb@vger.kernel.org
W: http://www.linux-usb.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
S: Supported
F: Documentation/devicetree/bindings/usb/
F: Documentation/usb/
F: drivers/usb/
F: include/linux/usb.h
@ -12148,6 +12173,7 @@ VIRTIO CORE, NET AND BLOCK DRIVERS
M: "Michael S. Tsirkin" <mst@redhat.com>
L: virtualization@lists.linux-foundation.org
S: Maintained
F: Documentation/devicetree/bindings/virtio/
F: drivers/virtio/
F: tools/virtio/
F: drivers/net/virtio_net.c
@ -12536,7 +12562,8 @@ S: Maintained
F: arch/x86/entry/vdso/
XC2028/3028 TUNER DRIVER
M: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git

4
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 7
SUBLEVEL = 0
EXTRAVERSION = -rc2
EXTRAVERSION = -rc6
NAME = Psychotic Stoned Sheep
# *DOCUMENTATION*
@ -363,11 +363,13 @@ CHECK = sparse
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-Wbitwise -Wno-return-void $(CF)
NOSTDINC_FLAGS =
CFLAGS_MODULE =
AFLAGS_MODULE =
LDFLAGS_MODULE =
CFLAGS_KERNEL =
AFLAGS_KERNEL =
LDFLAGS_vmlinux =
CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im -Wno-maybe-uninitialized
CFLAGS_KCOV = -fsanitize-coverage=trace-pc

7
arch/Kconfig
View File

@ -226,8 +226,8 @@ config ARCH_INIT_TASK
config ARCH_TASK_STRUCT_ALLOCATOR
bool
# Select if arch has its private alloc_thread_info() function
config ARCH_THREAD_INFO_ALLOCATOR
# Select if arch has its private alloc_thread_stack() function
config ARCH_THREAD_STACK_ALLOCATOR
bool
# Select if arch wants to size task_struct dynamically via arch_task_struct_size:
@ -606,6 +606,9 @@ config HAVE_ARCH_HASH
file which provides platform-specific implementations of some
functions in <linux/hash.h> or fs/namei.c.
config ISA_BUS_API
def_bool ISA
#
# ABI hall of shame
#

4
arch/alpha/include/asm/pgalloc.h
View File

@ -40,7 +40,7 @@ pgd_free(struct mm_struct *mm, pgd_t *pgd)
static inline pmd_t *
pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
return ret;
}
@ -53,7 +53,7 @@ pmd_free(struct mm_struct *mm, pmd_t *pmd)
static inline pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
return pte;
}

31
arch/arc/Kconfig
View File

@ -61,7 +61,7 @@ config RWSEM_GENERIC_SPINLOCK
def_bool y
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
def_bool n
config ARCH_FLATMEM_ENABLE
def_bool y
@ -186,9 +186,6 @@ if SMP
config ARC_HAS_COH_CACHES
def_bool n
config ARC_HAS_REENTRANT_IRQ_LV2
def_bool n
config ARC_MCIP
bool "ARConnect Multicore IP (MCIP) Support "
depends on ISA_ARCV2
@ -366,25 +363,10 @@ config NODES_SHIFT
if ISA_ARCOMPACT
config ARC_COMPACT_IRQ_LEVELS
bool "ARCompact IRQ Priorities: High(2)/Low(1)"
bool "Setup Timer IRQ as high Priority"
default n
# Timer HAS to be high priority, for any other high priority config
select ARC_IRQ3_LV2
# if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy
depends on !SMP || ARC_HAS_REENTRANT_IRQ_LV2
if ARC_COMPACT_IRQ_LEVELS
config ARC_IRQ3_LV2
bool
config ARC_IRQ5_LV2
bool
config ARC_IRQ6_LV2
bool
endif #ARC_COMPACT_IRQ_LEVELS
depends on !SMP
config ARC_FPU_SAVE_RESTORE
bool "Enable FPU state persistence across context switch"
@ -407,11 +389,6 @@ config ARC_HAS_LLSC
default y
depends on !ARC_CANT_LLSC
config ARC_STAR_9000923308
bool "Workaround for llock/scond livelock"
default n
depends on ISA_ARCV2 && SMP && ARC_HAS_LLSC
config ARC_HAS_SWAPE
bool "Insn: SWAPE (endian-swap)"
default y
@ -471,7 +448,7 @@ config LINUX_LINK_BASE
config HIGHMEM
bool "High Memory Support"
select DISCONTIGMEM
select ARCH_DISCONTIGMEM_ENABLE
help
With ARC 2G:2G address split, only upper 2G is directly addressable by
kernel. Enable this to potentially allow access to rest of 2G and PAE

4
arch/arc/Makefile
View File

@ -66,8 +66,6 @@ endif
endif
cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
# By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok
ifeq ($(atleast_gcc48),y)
cflags-$(CONFIG_ARC_DW2_UNWIND) += -gdwarf-2
@ -127,7 +125,7 @@ libs-y += arch/arc/lib/ $(LIBGCC)
boot := arch/arc/boot
#default target for make without any arguements.
#default target for make without any arguments.
KBUILD_IMAGE := bootpImage
all: $(KBUILD_IMAGE)

2
arch/arc/boot/dts/abilis_tb100.dtsi
View File

@ -23,8 +23,6 @@
/ {
clock-frequency = <500000000>; /* 500 MHZ */
soc100 {
bus-frequency = <166666666>;

2
arch/arc/boot/dts/abilis_tb101.dtsi
View File

@ -23,8 +23,6 @@
/ {
clock-frequency = <500000000>; /* 500 MHZ */
soc100 {
bus-frequency = <166666666>;

1
arch/arc/boot/dts/axc001.dtsi
View File

@ -15,7 +15,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <750000000>; /* 750 MHZ */
#address-cells = <1>;
#size-cells = <1>;

1
arch/arc/boot/dts/axc003.dtsi
View File

@ -14,7 +14,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <90000000>;
#address-cells = <1>;
#size-cells = <1>;

1
arch/arc/boot/dts/axc003_idu.dtsi
View File

@ -14,7 +14,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <90000000>;
#address-cells = <1>;
#size-cells = <1>;

1
arch/arc/boot/dts/eznps.dts
View File

@ -18,7 +18,6 @@
/ {
compatible = "ezchip,arc-nps";
clock-frequency = <83333333>; /* 83.333333 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&intc>;

1
arch/arc/boot/dts/nsim_700.dts
View File

@ -11,7 +11,6 @@
/ {
compatible = "snps,nsim";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&core_intc>;

1
arch/arc/boot/dts/nsimosci.dts
View File

@ -11,7 +11,6 @@
/ {
compatible = "snps,nsimosci";
clock-frequency = <20000000>; /* 20 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&core_intc>;

1
arch/arc/boot/dts/nsimosci_hs.dts
View File

@ -11,7 +11,6 @@
/ {
compatible = "snps,nsimosci_hs";
clock-frequency = <20000000>; /* 20 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&core_intc>;

1
arch/arc/boot/dts/nsimosci_hs_idu.dts
View File

@ -11,7 +11,6 @@
/ {
compatible = "snps,nsimosci_hs";
clock-frequency = <5000000>; /* 5 MHZ */
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&core_intc>;

1
arch/arc/boot/dts/skeleton.dtsi
View File

@ -13,7 +13,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
chosen { };

1
arch/arc/boot/dts/skeleton_hs.dtsi
View File

@ -8,7 +8,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
chosen { };

1
arch/arc/boot/dts/skeleton_hs_idu.dtsi
View File

@ -8,7 +8,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <80000000>; /* 80 MHZ */
#address-cells = <1>;
#size-cells = <1>;
chosen { };

1
arch/arc/boot/dts/vdk_axc003.dtsi
View File

@ -14,7 +14,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <50000000>;
#address-cells = <1>;
#size-cells = <1>;

1
arch/arc/boot/dts/vdk_axc003_idu.dtsi
View File

@ -15,7 +15,6 @@
/ {
compatible = "snps,arc";
clock-frequency = <50000000>;
#address-cells = <1>;
#size-cells = <1>;

45
arch/arc/include/asm/atomic.h
View File

@ -25,50 +25,17 @@
#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
#ifdef CONFIG_ARC_STAR_9000923308
#define SCOND_FAIL_RETRY_VAR_DEF \
unsigned int delay = 1, tmp; \
#define SCOND_FAIL_RETRY_ASM \
" bz 4f \n" \
" ; --- scond fail delay --- \n" \
" mov %[tmp], %[delay] \n" /* tmp = delay */ \
"2: brne.d %[tmp], 0, 2b \n" /* while (tmp != 0) */ \
" sub %[tmp], %[tmp], 1 \n" /* tmp-- */ \
" rol %[delay], %[delay] \n" /* delay *= 2 */ \
" b 1b \n" /* start over */ \
"4: ; --- success --- \n" \
#define SCOND_FAIL_RETRY_VARS \
,[delay] "+&r" (delay),[tmp] "=&r" (tmp) \
#else /* !CONFIG_ARC_STAR_9000923308 */
#define SCOND_FAIL_RETRY_VAR_DEF
#define SCOND_FAIL_RETRY_ASM \
" bnz 1b \n" \
#define SCOND_FAIL_RETRY_VARS
#endif
#define ATOMIC_OP(op, c_op, asm_op) \
static inline void atomic_##op(int i, atomic_t *v) \
{ \
unsigned int val; \
SCOND_FAIL_RETRY_VAR_DEF \
unsigned int val; \
\
__asm__ __volatile__( \
"1: llock %[val], [%[ctr]] \n" \
" " #asm_op " %[val], %[val], %[i] \n" \
" scond %[val], [%[ctr]] \n" \
" \n" \
SCOND_FAIL_RETRY_ASM \
\
" bnz 1b \n" \
: [val] "=&r" (val) /* Early clobber to prevent reg reuse */ \
SCOND_FAIL_RETRY_VARS \
: [ctr] "r" (&v->counter), /* Not "m": llock only supports reg direct addr mode */ \
[i] "ir" (i) \
: "cc"); \
@ -77,8 +44,7 @@ static inline void atomic_##op(int i, atomic_t *v) \
#define ATOMIC_OP_RETURN(op, c_op, asm_op) \
static inline int atomic_##op##_return(int i, atomic_t *v) \
{ \
unsigned int val; \
SCOND_FAIL_RETRY_VAR_DEF \
unsigned int val; \
\
/* \
* Explicit full memory barrier needed before/after as \
@ -90,11 +56,8 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
"1: llock %[val], [%[ctr]] \n" \
" " #asm_op " %[val], %[val], %[i] \n" \
" scond %[val], [%[ctr]] \n" \
" \n" \
SCOND_FAIL_RETRY_ASM \
\
" bnz 1b \n" \
: [val] "=&r" (val) \
SCOND_FAIL_RETRY_VARS \
: [ctr] "r" (&v->counter), \
[i] "ir" (i) \
: "cc"); \

4
arch/arc/include/asm/entry-compact.h
View File

@ -76,8 +76,8 @@
* We need to be a bit more cautious here. What if a kernel bug in
* L1 ISR, caused SP to go whaco (some small value which looks like
* USER stk) and then we take L2 ISR.
* Above brlo alone would treat it as a valid L1-L2 sceanrio
* instead of shouting alound
* Above brlo alone would treat it as a valid L1-L2 scenario
* instead of shouting around
* The only feasible way is to make sure this L2 happened in
* L1 prelogue ONLY i.e. ilink2 is less than a pre-set marker in
* L1 ISR before it switches stack

2
arch/arc/include/asm/mmu_context.h
View File

@ -83,7 +83,7 @@ static inline void get_new_mmu_context(struct mm_struct *mm)
local_flush_tlb_all();
/*
* Above checke for rollover of 8 bit ASID in 32 bit container.
* Above check for rollover of 8 bit ASID in 32 bit container.
* If the container itself wrapped around, set it to a non zero
* "generation" to distinguish from no context
*/

4
arch/arc/include/asm/pgalloc.h
View File

@ -95,7 +95,7 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
{
pte_t *pte;
pte = (pte_t *) __get_free_pages(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO,
pte = (pte_t *) __get_free_pages(GFP_KERNEL | __GFP_ZERO,
__get_order_pte());
return pte;
@ -107,7 +107,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long address)
pgtable_t pte_pg;
struct page *page;
pte_pg = (pgtable_t)__get_free_pages(GFP_KERNEL | __GFP_REPEAT, __get_order_pte());
pte_pg = (pgtable_t)__get_free_pages(GFP_KERNEL, __get_order_pte());
if (!pte_pg)
return 0;
memzero((void *)pte_pg, PTRS_PER_PTE * sizeof(pte_t));

2
arch/arc/include/asm/pgtable.h
View File

@ -47,7 +47,7 @@
* Page Tables are purely for Linux VM's consumption and the bits below are
* suited to that (uniqueness). Hence some are not implemented in the TLB and
* some have different value in TLB.
* e.g. MMU v2: K_READ bit is 8 and so is GLOBAL (possible becoz they live in
* e.g. MMU v2: K_READ bit is 8 and so is GLOBAL (possible because they live in
* seperate PD0 and PD1, which combined forms a translation entry)
* while for PTE perspective, they are 8 and 9 respectively
* with MMU v3: Most bits (except SHARED) represent the exact hardware pos

2
arch/arc/include/asm/processor.h
View File

@ -78,7 +78,7 @@ struct task_struct;
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->sp)
/*
* Where abouts of Task's sp, fp, blink when it was last seen in kernel mode.
* Where about of Task's sp, fp, blink when it was last seen in kernel mode.
* Look in process.c for details of kernel stack layout
*/
#define TSK_K_ESP(tsk) (tsk->thread.ksp)

2
arch/arc/include/asm/smp.h
View File

@ -86,7 +86,7 @@ static inline const char *arc_platform_smp_cpuinfo(void)
* (1) These insn were introduced only in 4.10 release. So for older released
* support needed.
*
* (2) In a SMP setup, the LLOCK/SCOND atomiticity across CPUs needs to be
* (2) In a SMP setup, the LLOCK/SCOND atomicity across CPUs needs to be
* gaurantted by the platform (not something which core handles).
* Assuming a platform won't, SMP Linux needs to use spinlocks + local IRQ
* disabling for atomicity.

292
arch/arc/include/asm/spinlock.h
View File

@ -20,11 +20,6 @@
#ifdef CONFIG_ARC_HAS_LLSC
/*
* A normal LLOCK/SCOND based system, w/o need for livelock workaround
*/
#ifndef CONFIG_ARC_STAR_9000923308
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned int val;
@ -238,293 +233,6 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
smp_mb();
}
#else /* CONFIG_ARC_STAR_9000923308 */
/*
* HS38x4 could get into a LLOCK/SCOND livelock in case of multiple overlapping
* coherency transactions in the SCU. The exclusive line state keeps rotating
* among contenting cores leading to a never ending cycle. So break the cycle
* by deferring the retry of failed exclusive access (SCOND). The actual delay
* needed is function of number of contending cores as well as the unrelated
* coherency traffic from other cores. To keep the code simple, start off with
* small delay of 1 which would suffice most cases and in case of contention
* double the delay. Eventually the delay is sufficient such that the coherency
* pipeline is drained, thus a subsequent exclusive access would succeed.
*/
#define SCOND_FAIL_RETRY_VAR_DEF \
unsigned int delay, tmp; \
#define SCOND_FAIL_RETRY_ASM \
" ; --- scond fail delay --- \n" \
" mov %[tmp], %[delay] \n" /* tmp = delay */ \
"2: brne.d %[tmp], 0, 2b \n" /* while (tmp != 0) */ \
" sub %[tmp], %[tmp], 1 \n" /* tmp-- */ \
" rol %[delay], %[delay] \n" /* delay *= 2 */ \
" b 1b \n" /* start over */ \
" \n" \
"4: ; --- done --- \n" \
#define SCOND_FAIL_RETRY_VARS \
,[delay] "=&r" (delay), [tmp] "=&r" (tmp) \
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 0b \n" /* spin while LOCKED */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bz 4f \n" /* done */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_spin_trylock(arch_spinlock_t *lock)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 4f \n" /* already LOCKED, just bail */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
smp_mb();
lock->slock = __ARCH_SPIN_LOCK_UNLOCKED__;
smp_mb();
}
/*
* Read-write spinlocks, allowing multiple readers but only one writer.
* Unfair locking as Writers could be starved indefinitely by Reader(s)
*/
static inline void arch_read_lock(arch_rwlock_t *rw)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
/*
* zero means writer holds the lock exclusively, deny Reader.
* Otherwise grant lock to first/subseq reader
*
* if (rw->counter > 0) {
* rw->counter--;
* ret = 1;
* }
*/
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 0b\n" /* <= 0: spin while write locked */
" sub %[val], %[val], 1 \n" /* reader lock */
" scond %[val], [%[rwlock]] \n"
" bz 4f \n" /* done */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_read_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 4f\n" /* <= 0: already write locked, bail */
" sub %[val], %[val], 1 \n" /* counter-- */
" scond %[val], [%[rwlock]] \n"
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_write_lock(arch_rwlock_t *rw)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
/*
* If reader(s) hold lock (lock < __ARCH_RW_LOCK_UNLOCKED__),
* deny writer. Otherwise if unlocked grant to writer
* Hence the claim that Linux rwlocks are unfair to writers.
* (can be starved for an indefinite time by readers).
*
* if (rw->counter == __ARCH_RW_LOCK_UNLOCKED__) {
* rw->counter = 0;
* ret = 1;
* }
*/
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 0b \n" /* while !UNLOCKED spin */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bz 4f \n"
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_write_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 4f \n" /* !UNLOCKED, bail */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_read_unlock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* rw->counter++;
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" add %[val], %[val], 1 \n"
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter))
: "memory", "cc");
smp_mb();
}
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* rw->counter = __ARCH_RW_LOCK_UNLOCKED__;
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" scond %[UNLOCKED], [%[rwlock]]\n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "r" (__ARCH_RW_LOCK_UNLOCKED__)
: "memory", "cc");
smp_mb();
}
#undef SCOND_FAIL_RETRY_VAR_DEF
#undef SCOND_FAIL_RETRY_ASM
#undef SCOND_FAIL_RETRY_VARS
#endif /* CONFIG_ARC_STAR_9000923308 */
#else /* !CONFIG_ARC_HAS_LLSC */
static inline void arch_spin_lock(arch_spinlock_t *lock)

2
arch/arc/include/asm/thread_info.h
View File

@ -103,7 +103,7 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void)
/*
* _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it.
* SYSCALL_TRACE is anways seperately/unconditionally tested right after a
* SYSCALL_TRACE is anyway seperately/unconditionally tested right after a
* syscall, so all that reamins to be tested is _TIF_WORK_MASK
*/

2
arch/arc/include/asm/uaccess.h
View File

@ -32,7 +32,7 @@
#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
/*
* Algorthmically, for __user_ok() we want do:
* Algorithmically, for __user_ok() we want do:
* (start < TASK_SIZE) && (start+len < TASK_SIZE)
* where TASK_SIZE could either be retrieved from thread_info->addr_limit or
* emitted directly in code.

2
arch/arc/include/uapi/asm/swab.h
View File

@ -74,7 +74,7 @@
__tmp ^ __in; \
})
#elif (ARC_BSWAP_TYPE == 2) /* Custom single cycle bwap instruction */
#elif (ARC_BSWAP_TYPE == 2) /* Custom single cycle bswap instruction */
#define __arch_swab32(x) \
({ \

18
arch/arc/kernel/entry-compact.S
View File

@ -91,27 +91,13 @@ VECTOR mem_service ; 0x8, Mem exception (0x1)
VECTOR instr_service ; 0x10, Instrn Error (0x2)
; ******************** Device ISRs **********************
#ifdef CONFIG_ARC_IRQ3_LV2
#ifdef CONFIG_ARC_COMPACT_IRQ_LEVELS
VECTOR handle_interrupt_level2
#else
VECTOR handle_interrupt_level1
#endif
VECTOR handle_interrupt_level1
#ifdef CONFIG_ARC_IRQ5_LV2
VECTOR handle_interrupt_level2
#else
VECTOR handle_interrupt_level1
#endif
#ifdef CONFIG_ARC_IRQ6_LV2
VECTOR handle_interrupt_level2
#else
VECTOR handle_interrupt_level1
#endif
.rept 25
.rept 28
VECTOR handle_interrupt_level1 ; Other devices
.endr

6
arch/arc/kernel/intc-compact.c
View File

@ -28,10 +28,8 @@ void arc_init_IRQ(void)
{
int level_mask = 0;
/* setup any high priority Interrupts (Level2 in ARCompact jargon) */
level_mask |= IS_ENABLED(CONFIG_ARC_IRQ3_LV2) << 3;
level_mask |= IS_ENABLED(CONFIG_ARC_IRQ5_LV2) << 5;
level_mask |= IS_ENABLED(CONFIG_ARC_IRQ6_LV2) << 6;
/* Is timer high priority Interrupt (Level2 in ARCompact jargon) */
level_mask |= IS_ENABLED(CONFIG_ARC_COMPACT_IRQ_LEVELS) << TIMER0_IRQ;
/*
* Write to register, even if no LV2 IRQs configured to reset it

2
arch/arc/kernel/perf_event.c
View File

@ -108,7 +108,7 @@ static void arc_perf_event_update(struct perf_event *event,
int64_t delta = new_raw_count - prev_raw_count;
/*
* We don't afaraid of hwc->prev_count changing beneath our feet
* We aren't afraid of hwc->prev_count changing beneath our feet
* because there's no way for us to re-enter this function anytime.
*/
local64_set(&hwc->prev_count, new_raw_count);

2
arch/arc/kernel/setup.c
View File

@ -392,7 +392,7 @@ void __init setup_arch(char **cmdline_p)
/*
* If we are here, it is established that @uboot_arg didn't
* point to DT blob. Instead if u-boot says it is cmdline,
* Appent to embedded DT cmdline.
* append to embedded DT cmdline.
* setup_machine_fdt() would have populated @boot_command_line
*/
if (uboot_tag == 1) {

2
arch/arc/kernel/signal.c
View File

@ -34,7 +34,7 @@
* -ViXS were still seeing crashes when using insmod to load drivers.
* It turned out that the code to change Execute permssions for TLB entries
* of user was not guarded for interrupts (mod_tlb_permission)
* This was cauing TLB entries to be overwritten on unrelated indexes
* This was causing TLB entries to be overwritten on unrelated indexes
*
* Vineetg: July 15th 2008: Bug #94183
* -Exception happens in Delay slot of a JMP, and before user space resumes,

2
arch/arc/kernel/stacktrace.c
View File

@ -142,7 +142,7 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs,
* prelogue is setup (callee regs saved and then fp set and not other
* way around
*/
pr_warn("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");
pr_warn_once("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");
return 0;
#endif

2
arch/arc/kernel/troubleshoot.c
View File

@ -276,7 +276,7 @@ static int tlb_stats_open(struct inode *inode, struct file *file)
return 0;
}
/* called on user read(): display the couters */
/* called on user read(): display the counters */
static ssize_t tlb_stats_output(struct file *file, /* file descriptor */
char __user *user_buf, /* user buffer */
size_t len, /* length of buffer */

6
arch/arc/mm/cache.c
View File

@ -215,7 +215,7 @@ slc_chk:
* ------------------
* This ver of MMU supports variable page sizes (1k-16k): although Linux will
* only support 8k (default), 16k and 4k.
* However from hardware perspective, smaller page sizes aggrevate aliasing
* However from hardware perspective, smaller page sizes aggravate aliasing
* meaning more vaddr bits needed to disambiguate the cache-line-op ;
* the existing scheme of piggybacking won't work for certain configurations.
* Two new registers IC_PTAG and DC_PTAG inttoduced.
@ -302,7 +302,7 @@ void __cache_line_loop_v3(phys_addr_t paddr, unsigned long vaddr,
/*
* This is technically for MMU v4, using the MMU v3 programming model
* Special work for HS38 aliasing I-cache configuratino with PAE40
* Special work for HS38 aliasing I-cache configuration with PAE40
* - upper 8 bits of paddr need to be written into PTAG_HI
* - (and needs to be written before the lower 32 bits)
* Note that PTAG_HI is hoisted outside the line loop
@ -936,7 +936,7 @@ void arc_cache_init(void)
ic->ver, CONFIG_ARC_MMU_VER);
/*
* In MMU v4 (HS38x) the alising icache config uses IVIL/PTAG
* In MMU v4 (HS38x) the aliasing icache config uses IVIL/PTAG
* pair to provide vaddr/paddr respectively, just as in MMU v3
*/
if (is_isa_arcv2() && ic->alias)

2
arch/arc/mm/dma.c
View File

@ -10,7 +10,7 @@
* DMA Coherent API Notes
*
* I/O is inherently non-coherent on ARC. So a coherent DMA buffer is
* implemented by accessintg it using a kernel virtual address, with
* implemented by accessing it using a kernel virtual address, with
* Cache bit off in the TLB entry.
*
* The default DMA address == Phy address which is 0x8000_0000 based.

1
arch/arm/boot/dts/Makefile
View File

@ -741,6 +741,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
sun7i-a20-olimex-som-evb.dtb \
sun7i-a20-olinuxino-lime.dtb \
sun7i-a20-olinuxino-lime2.dtb \
sun7i-a20-olinuxino-lime2-emmc.dtb \
sun7i-a20-olinuxino-micro.dtb \
sun7i-a20-orangepi.dtb \
sun7i-a20-orangepi-mini.dtb \

2
arch/arm/boot/dts/am437x-sk-evm.dts
View File

@ -418,7 +418,7 @@
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
clock-frequency = <400000>;
clock-frequency = <100000>;
tps@24 {
compatible = "ti,tps65218";

32
arch/arm/boot/dts/am57xx-idk-common.dtsi
View File

@ -60,10 +60,26 @@
tps659038_pmic {
compatible = "ti,tps659038-pmic";
smps12-in-supply = <&vmain>;
smps3-in-supply = <&vmain>;
smps45-in-supply = <&vmain>;
smps6-in-supply = <&vmain>;
smps7-in-supply = <&vmain>;
smps8-in-supply = <&vmain>;
smps9-in-supply = <&vmain>;
ldo1-in-supply = <&vmain>;
ldo2-in-supply = <&vmain>;
ldo3-in-supply = <&vmain>;
ldo4-in-supply = <&vmain>;
ldo9-in-supply = <&vmain>;
ldoln-in-supply = <&vmain>;
ldousb-in-supply = <&vmain>;
ldortc-in-supply = <&vmain>;
regulators {
smps12_reg: smps12 {
/* VDD_MPU */
vin-supply = <&vmain>;
regulator-name = "smps12";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
@ -73,7 +89,6 @@
smps3_reg: smps3 {
/* VDD_DDR EMIF1 EMIF2 */
vin-supply = <&vmain>;
regulator-name = "smps3";
regulator-min-microvolt = <1350000>;
regulator-max-microvolt = <1350000>;
@ -84,7 +99,6 @@
smps45_reg: smps45 {
/* VDD_DSPEVE on AM572 */
/* VDD_IVA + VDD_DSP on AM571 */
vin-supply = <&vmain>;
regulator-name = "smps45";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
@ -94,7 +108,6 @@
smps6_reg: smps6 {
/* VDD_GPU */
vin-supply = <&vmain>;
regulator-name = "smps6";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
@ -104,7 +117,6 @@
smps7_reg: smps7 {
/* VDD_CORE */
vin-supply = <&vmain>;
regulator-name = "smps7";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1150000>;
@ -115,13 +127,11 @@
smps8_reg: smps8 {
/* 5728 - VDD_IVAHD */
/* 5718 - N.C. test point */
vin-supply = <&vmain>;
regulator-name = "smps8";
};
smps9_reg: smps9 {
/* VDD_3_3D */
vin-supply = <&vmain>;
regulator-name = "smps9";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
@ -132,7 +142,6 @@
ldo1_reg: ldo1 {
/* VDDSHV8 - VSDMMC */
/* NOTE: on rev 1.3a, data supply */
vin-supply = <&vmain>;
regulator-name = "ldo1";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
@ -142,7 +151,6 @@
ldo2_reg: ldo2 {
/* VDDSH18V */
vin-supply = <&vmain>;
regulator-name = "ldo2";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@ -152,7 +160,6 @@
ldo3_reg: ldo3 {
/* R1.3a 572x V1_8PHY_LDO3: USB, SATA */
vin-supply = <&vmain>;
regulator-name = "ldo3";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@ -162,7 +169,6 @@
ldo4_reg: ldo4 {
/* R1.3a 572x V1_8PHY_LDO4: PCIE, HDMI*/
vin-supply = <&vmain>;
regulator-name = "ldo4";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@ -174,7 +180,6 @@
ldo9_reg: ldo9 {
/* VDD_RTC */
vin-supply = <&vmain>;
regulator-name = "ldo9";
regulator-min-microvolt = <840000>;
regulator-max-microvolt = <1160000>;
@ -184,7 +189,6 @@
ldoln_reg: ldoln {
/* VDDA_1V8_PLL */
vin-supply = <&vmain>;
regulator-name = "ldoln";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@ -194,7 +198,6 @@
ldousb_reg: ldousb {
/* VDDA_3V_USB: VDDA_USBHS33 */
vin-supply = <&vmain>;
regulator-name = "ldousb";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
@ -204,7 +207,6 @@
ldortc_reg: ldortc {
/* VDDA_RTC */
vin-supply = <&vmain>;
regulator-name = "ldortc";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;

8
arch/arm/boot/dts/dm8148-evm.dts
View File

@ -93,6 +93,10 @@
};
};
&mmc1 {
status = "disabled";
};
&mmc2 {
pinctrl-names = "default";
pinctrl-0 = <&sd1_pins>;
@ -101,6 +105,10 @@
cd-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
};
&mmc3 {
status = "disabled";
};
&pincntl {
sd1_pins: pinmux_sd1_pins {
pinctrl-single,pins = <

9
arch/arm/boot/dts/dm8148-t410.dts
View File

@ -45,6 +45,14 @@
phy-mode = "rgmii";
};
&mmc1 {
status = "disabled";
};
&mmc2 {
status = "disabled";
};
&mmc3 {
pinctrl-names = "default";
pinctrl-0 = <&sd2_pins>;
@ -53,6 +61,7 @@
dmas = <&edma_xbar 8 0 1 /* use SDTXEVT1 instead of MCASP0TX */
&edma_xbar 9 0 2>; /* use SDRXEVT1 instead of MCASP0RX */
dma-names = "tx", "rx";
non-removable;
};
&pincntl {

2
arch/arm/boot/dts/dra7.dtsi
View File

@ -1451,6 +1451,8 @@
ti,hwmods = "gpmc";
reg = <0x50000000 0x37c>; /* device IO registers */
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&edma_xbar 4 0>;
dma-names = "rxtx";
gpmc,num-cs = <8>;
gpmc,num-waitpins = <2>;
#address-cells = <2>;

4
arch/arm/boot/dts/dra74x.dtsi
View File

@ -107,8 +107,8 @@
reg = <0x58000000 0x80>,
<0x58004054 0x4>,
<0x58004300 0x20>,
<0x58005054 0x4>,
<0x58005300 0x20>;
<0x58009054 0x4>,
<0x58009300 0x20>;
reg-names = "dss", "pll1_clkctrl", "pll1",
"pll2_clkctrl", "pll2";

13
arch/arm/boot/dts/exynos5250-snow-common.dtsi
View File

@ -242,7 +242,7 @@
hpd-gpios = <&gpx0 7 GPIO_ACTIVE_HIGH>;
ports {
port0 {
port {
dp_out: endpoint {
remote-endpoint = <&bridge_in>;
};
@ -485,13 +485,20 @@
edid-emulation = <5>;
ports {
port0 {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
bridge_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
port1 {
port@1 {
reg = <1>;
bridge_in: endpoint {
remote-endpoint = <&dp_out>;
};

13
arch/arm/boot/dts/exynos5420-peach-pit.dts
View File

@ -163,7 +163,7 @@
hpd-gpios = <&gpx2 6 GPIO_ACTIVE_HIGH>;
ports {
port0 {
port {
dp_out: endpoint {
remote-endpoint = <&bridge_in>;
};
@ -631,13 +631,20 @@
use-external-pwm;
ports {
port0 {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
bridge_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
port1 {
port@1 {
reg = <1>;
bridge_in: endpoint {
remote-endpoint = <&dp_out>;
};

2
arch/arm/boot/dts/omap3-evm-37xx.dts
View File

@ -85,7 +85,7 @@
OMAP3_CORE1_IOPAD(0x2158, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_clk.sdmmc2_clk */
OMAP3_CORE1_IOPAD(0x215a, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_cmd.sdmmc2_cmd */
OMAP3_CORE1_IOPAD(0x215c, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat0.sdmmc2_dat0 */
OMAP3_CORE1_IOPAD(0x215e, WAKEUP_EN | PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat1.sdmmc2_dat1 */
OMAP3_CORE1_IOPAD(0x215e, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat1.sdmmc2_dat1 */
OMAP3_CORE1_IOPAD(0x2160, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat2.sdmmc2_dat2 */
OMAP3_CORE1_IOPAD(0x2162, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat3.sdmmc2_dat3 */
>;

1
arch/arm/boot/dts/omap3-igep.dtsi
View File

@ -188,6 +188,7 @@
vmmc-supply = <&vmmc1>;
vmmc_aux-supply = <&vsim>;
bus-width = <4>;
cd-gpios = <&twl_gpio 0 GPIO_ACTIVE_LOW>;
};
&mmc3 {

11
arch/arm/boot/dts/omap3-igep0020-common.dtsi
View File

@ -194,6 +194,12 @@
OMAP3630_CORE2_IOPAD(0x25f8, PIN_OUTPUT | MUX_MODE4) /* etk_d14.gpio_28 */
>;
};
mmc1_wp_pins: pinmux_mmc1_cd_pins {
pinctrl-single,pins = <
OMAP3630_CORE2_IOPAD(0x25fa, PIN_INPUT | MUX_MODE4) /* etk_d15.gpio_29 */
>;
};
};
&i2c3 {
@ -250,3 +256,8 @@
};
};
};
&mmc1 {
pinctrl-0 = <&mmc1_pins &mmc1_wp_pins>;
wp-gpios = <&gpio1 29 GPIO_ACTIVE_LOW>; /* gpio_29 */
};

4
arch/arm/boot/dts/omap3-n900.dts
View File

@ -288,7 +288,7 @@
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x2180, PIN_INPUT_PULLUP | MUX_MODE1) /* ssi1_rdy_tx */
OMAP3_CORE1_IOPAD(0x217e, PIN_OUTPUT | MUX_MODE1) /* ssi1_flag_tx */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | WAKEUP_EN | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x217c, PIN_OUTPUT | MUX_MODE1) /* ssi1_dat_tx */
OMAP3_CORE1_IOPAD(0x2184, PIN_INPUT | MUX_MODE1) /* ssi1_dat_rx */
OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE1) /* ssi1_flag_rx */
@ -300,7 +300,7 @@
modem_pins: pinmux_modem {
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x20dc, PIN_OUTPUT | MUX_MODE4) /* gpio 70 => cmt_apeslpx */
OMAP3_CORE1_IOPAD(0x20e0, PIN_INPUT | WAKEUP_EN | MUX_MODE4) /* gpio 72 => ape_rst_rq */
OMAP3_CORE1_IOPAD(0x20e0, PIN_INPUT | MUX_MODE4) /* gpio 72 => ape_rst_rq */
OMAP3_CORE1_IOPAD(0x20e2, PIN_OUTPUT | MUX_MODE4) /* gpio 73 => cmt_rst_rq */
OMAP3_CORE1_IOPAD(0x20e4, PIN_OUTPUT | MUX_MODE4) /* gpio 74 => cmt_en */
OMAP3_CORE1_IOPAD(0x20e6, PIN_OUTPUT | MUX_MODE4) /* gpio 75 => cmt_rst */

6
arch/arm/boot/dts/omap3-n950-n9.dtsi
View File

@ -97,7 +97,7 @@
OMAP3_CORE1_IOPAD(0x217c, PIN_OUTPUT | MUX_MODE1) /* ssi1_dat_tx */
OMAP3_CORE1_IOPAD(0x217e, PIN_OUTPUT | MUX_MODE1) /* ssi1_flag_tx */
OMAP3_CORE1_IOPAD(0x2180, PIN_INPUT_PULLUP | MUX_MODE1) /* ssi1_rdy_tx */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | WAKEUP_EN | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x2184, PIN_INPUT | MUX_MODE1) /* ssi1_dat_rx */
OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE1) /* ssi1_flag_rx */
OMAP3_CORE1_IOPAD(0x2188, PIN_OUTPUT | MUX_MODE1) /* ssi1_rdy_rx */
@ -110,7 +110,7 @@
OMAP3_CORE1_IOPAD(0x217c, PIN_OUTPUT | MUX_MODE7) /* ssi1_dat_tx */
OMAP3_CORE1_IOPAD(0x217e, PIN_OUTPUT | MUX_MODE7) /* ssi1_flag_tx */
OMAP3_CORE1_IOPAD(0x2180, PIN_INPUT_PULLDOWN | MUX_MODE7) /* ssi1_rdy_tx */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | WAKEUP_EN | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | MUX_MODE4) /* ssi1_wake_tx (cawake) */
OMAP3_CORE1_IOPAD(0x2184, PIN_INPUT | MUX_MODE7) /* ssi1_dat_rx */
OMAP3_CORE1_IOPAD(0x2186, PIN_INPUT | MUX_MODE7) /* ssi1_flag_rx */
OMAP3_CORE1_IOPAD(0x2188, PIN_OUTPUT | MUX_MODE4) /* ssi1_rdy_rx */
@ -120,7 +120,7 @@
modem_pins1: pinmux_modem_core1_pins {
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x207a, PIN_INPUT | WAKEUP_EN | MUX_MODE4) /* gpio_34 (ape_rst_rq) */
OMAP3_CORE1_IOPAD(0x207a, PIN_INPUT | MUX_MODE4) /* gpio_34 (ape_rst_rq) */
OMAP3_CORE1_IOPAD(0x2100, PIN_OUTPUT | MUX_MODE4) /* gpio_88 (cmt_rst_rq) */
OMAP3_CORE1_IOPAD(0x210a, PIN_OUTPUT | MUX_MODE4) /* gpio_93 (cmt_apeslpx) */
>;

6
arch/arm/boot/dts/omap3-zoom3.dts
View File

@ -98,7 +98,7 @@
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x2174, PIN_INPUT_PULLUP | MUX_MODE0) /* uart2_cts.uart2_cts */
OMAP3_CORE1_IOPAD(0x2176, PIN_OUTPUT | MUX_MODE0) /* uart2_rts.uart2_rts */
OMAP3_CORE1_IOPAD(0x217a, WAKEUP_EN | PIN_INPUT | MUX_MODE0) /* uart2_rx.uart2_rx */
OMAP3_CORE1_IOPAD(0x217a, PIN_INPUT | MUX_MODE0) /* uart2_rx.uart2_rx */
OMAP3_CORE1_IOPAD(0x2178, PIN_OUTPUT | MUX_MODE0) /* uart2_tx.uart2_tx */
>;
};
@ -107,7 +107,7 @@
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x219a, PIN_INPUT_PULLDOWN | MUX_MODE0) /* uart3_cts_rctx.uart3_cts_rctx */
OMAP3_CORE1_IOPAD(0x219c, PIN_OUTPUT | MUX_MODE0) /* uart3_rts_sd.uart3_rts_sd */
OMAP3_CORE1_IOPAD(0x219e, WAKEUP_EN | PIN_INPUT | MUX_MODE0) /* uart3_rx_irrx.uart3_rx_irrx */
OMAP3_CORE1_IOPAD(0x219e, PIN_INPUT | MUX_MODE0) /* uart3_rx_irrx.uart3_rx_irrx */
OMAP3_CORE1_IOPAD(0x21a0, PIN_OUTPUT | MUX_MODE0) /* uart3_tx_irtx.uart3_tx_irtx */
>;
};
@ -125,7 +125,7 @@
pinctrl-single,pins = <
OMAP3630_CORE2_IOPAD(0x25d8, PIN_INPUT_PULLUP | MUX_MODE2) /* etk_clk.sdmmc3_clk */
OMAP3630_CORE2_IOPAD(0x25e4, PIN_INPUT_PULLUP | MUX_MODE2) /* etk_d4.sdmmc3_dat0 */
OMAP3630_CORE2_IOPAD(0x25e6, WAKEUP_EN | PIN_INPUT_PULLUP | MUX_MODE2) /* etk_d5.sdmmc3_dat1 */
OMAP3630_CORE2_IOPAD(0x25e6, PIN_INPUT_PULLUP | MUX_MODE2) /* etk_d5.sdmmc3_dat1 */
OMAP3630_CORE2_IOPAD(0x25e8, PIN_INPUT_PULLUP | MUX_MODE2) /* etk_d6.sdmmc3_dat2 */
OMAP3630_CORE2_IOPAD(0x25e2, PIN_INPUT_PULLUP | MUX_MODE2) /* etk_d3.sdmmc3_dat3 */
>;

48
arch/arm/boot/dts/omap5-board-common.dtsi
View File

@ -14,6 +14,29 @@
display0 = &hdmi0;
};
vmain: fixedregulator-vmain {
compatible = "regulator-fixed";
regulator-name = "vmain";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
};
vsys_cobra: fixedregulator-vsys_cobra {
compatible = "regulator-fixed";
regulator-name = "vsys_cobra";
vin-supply = <&vmain>;
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
};
vdds_1v8_main: fixedregulator-vdds_1v8_main {
compatible = "regulator-fixed";
regulator-name = "vdds_1v8_main";
vin-supply = <&smps7_reg>;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
vmmcsd_fixed: fixedregulator-mmcsd {
compatible = "regulator-fixed";
regulator-name = "vmmcsd_fixed";
@ -309,7 +332,7 @@
wlcore_irq_pin: pinmux_wlcore_irq_pin {
pinctrl-single,pins = <
OMAP5_IOPAD(0x40, WAKEUP_EN | PIN_INPUT_PULLUP | MUX_MODE6) /* llia_wakereqin.gpio1_wk14 */
OMAP5_IOPAD(0x40, PIN_INPUT_PULLUP | MUX_MODE6) /* llia_wakereqin.gpio1_wk14 */
>;
};
};
@ -409,6 +432,26 @@
ti,ldo6-vibrator;
smps123-in-supply = <&vsys_cobra>;
smps45-in-supply = <&vsys_cobra>;
smps6-in-supply = <&vsys_cobra>;
smps7-in-supply = <&vsys_cobra>;
smps8-in-supply = <&vsys_cobra>;
smps9-in-supply = <&vsys_cobra>;
smps10_out2-in-supply = <&vsys_cobra>;
smps10_out1-in-supply = <&vsys_cobra>;
ldo1-in-supply = <&vsys_cobra>;
ldo2-in-supply = <&vsys_cobra>;
ldo3-in-supply = <&vdds_1v8_main>;
ldo4-in-supply = <&vdds_1v8_main>;
ldo5-in-supply = <&vsys_cobra>;
ldo6-in-supply = <&vdds_1v8_main>;
ldo7-in-supply = <&vsys_cobra>;
ldo8-in-supply = <&vsys_cobra>;
ldo9-in-supply = <&vmmcsd_fixed>;
ldoln-in-supply = <&vsys_cobra>;
ldousb-in-supply = <&vsys_cobra>;
regulators {
smps123_reg: smps123 {
/* VDD_OPP_MPU */
@ -600,7 +643,8 @@
pinctrl-0 = <&twl6040_pins>;
interrupts = <GIC_SPI 119 IRQ_TYPE_NONE>; /* IRQ_SYS_2N cascaded to gic */
ti,audpwron-gpio = <&gpio5 13 GPIO_ACTIVE_HIGH>; /* gpio line 141 */
/* audpwron gpio defined in the board specific dts */
vio-supply = <&smps7_reg>;
v2v1-supply = <&smps9_reg>;

26
arch/arm/boot/dts/omap5-igep0050.dts
View File

@ -35,6 +35,22 @@
};
};
/* LDO4 is VPP1 - ball AD9 */
&ldo4_reg {
regulator-min-microvolt = <2000000>;
regulator-max-microvolt = <2000000>;
};
/*
* LDO7 is used for HDMI: VDDA_DSIPORTA - ball AA33, VDDA_DSIPORTC - ball AE33,
* VDDA_HDMI - ball AN25
*/
&ldo7_reg {
status = "okay";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
&omap5_pmx_core {
i2c4_pins: pinmux_i2c4_pins {
pinctrl-single,pins = <
@ -52,3 +68,13 @@
<&gpio7 3 0>; /* 195, SDA */
};
&twl6040 {
ti,audpwron-gpio = <&gpio5 16 GPIO_ACTIVE_HIGH>; /* gpio line 144 */
};
&twl6040_pins {
pinctrl-single,pins = <
OMAP5_IOPAD(0x1c4, PIN_OUTPUT | MUX_MODE6) /* mcspi1_somi.gpio5_144 */
OMAP5_IOPAD(0x1ca, PIN_OUTPUT | MUX_MODE6) /* perslimbus2_clock.gpio5_145 */
>;
};

10
arch/arm/boot/dts/omap5-uevm.dts
View File

@ -51,3 +51,13 @@
<&gpio9 1 GPIO_ACTIVE_HIGH>, /* TCA6424A P00, LS OE */
<&gpio7 1 GPIO_ACTIVE_HIGH>; /* GPIO 193, HPD */
};
&twl6040 {
ti,audpwron-gpio = <&gpio5 13 GPIO_ACTIVE_HIGH>; /* gpio line 141 */
};
&twl6040_pins {
pinctrl-single,pins = <
OMAP5_IOPAD(0x1be, PIN_OUTPUT | MUX_MODE6) /* mcspi1_somi.gpio5_141 */
>;
};

1
arch/arm/boot/dts/socfpga_cyclone5_vining_fpga.dts
View File

@ -136,6 +136,7 @@
&gmac1 {
status = "okay";
phy-mode = "rgmii";
phy-handle = <&phy1>;
snps,reset-gpio = <&porta 0 GPIO_ACTIVE_LOW>;
snps,reset-active-low;

3
arch/arm/boot/dts/stih407-family.dtsi
View File

@ -24,18 +24,21 @@
compatible = "shared-dma-pool";
reg = <0x40000000 0x01000000>;
no-map;
status = "disabled";
};
gp1_reserved: rproc@41000000 {
compatible = "shared-dma-pool";
reg = <0x41000000 0x01000000>;
no-map;
status = "disabled";
};
audio_reserved: rproc@42000000 {
compatible = "shared-dma-pool";
reg = <0x42000000 0x01000000>;
no-map;
status = "disabled";
};
dmu_reserved: rproc@43000000 {

2
arch/arm/boot/dts/sun6i-a31s-primo81.dts
View File

@ -176,8 +176,6 @@
};
&reg_dc1sw {
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
regulator-name = "vcc-lcd";
};

2
arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts
View File

@ -135,8 +135,6 @@
&reg_dc1sw {
regulator-name = "vcc-lcd-usb2";
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
};
&reg_dc5ldo {

1
arch/arm/configs/exynos_defconfig
View File

@ -82,6 +82,7 @@ CONFIG_TOUCHSCREEN_MMS114=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_MAX77693_HAPTIC=y
CONFIG_INPUT_MAX8997_HAPTIC=y
CONFIG_KEYBOARD_SAMSUNG=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_SAMSUNG=y
CONFIG_SERIAL_SAMSUNG_CONSOLE=y

1
arch/arm/configs/multi_v7_defconfig
View File

@ -264,6 +264,7 @@ CONFIG_KEYBOARD_TEGRA=y
CONFIG_KEYBOARD_SPEAR=y
CONFIG_KEYBOARD_ST_KEYSCAN=y
CONFIG_KEYBOARD_CROS_EC=m
CONFIG_KEYBOARD_SAMSUNG=m
CONFIG_MOUSE_PS2_ELANTECH=y
CONFIG_MOUSE_CYAPA=m
CONFIG_MOUSE_ELAN_I2C=y

2
arch/arm/include/asm/pgalloc.h
View File

@ -29,7 +29,7 @@
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
return (pmd_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
return (pmd_t *)get_zeroed_page(GFP_KERNEL);
}
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)

1
arch/arm/include/asm/pgtable-2level.h
View File

@ -193,6 +193,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_bad(pmd) (pmd_val(pmd) & 2)
#define pmd_present(pmd) (pmd_val(pmd))
#define copy_pmd(pmdpd,pmdps) \
do { \

5
arch/arm/include/asm/pgtable-3level.h
View File

@ -211,6 +211,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
: !!(pmd_val(pmd) & (val)))
#define pmd_isclear(pmd, val) (!(pmd_val(pmd) & (val)))
#define pmd_present(pmd) (pmd_isset((pmd), L_PMD_SECT_VALID))
#define pmd_young(pmd) (pmd_isset((pmd), PMD_SECT_AF))
#define pte_special(pte) (pte_isset((pte), L_PTE_SPECIAL))
static inline pte_t pte_mkspecial(pte_t pte)
@ -249,10 +250,10 @@ PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
#define pfn_pmd(pfn,prot) (__pmd(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
/* represent a notpresent pmd by zero, this is used by pmdp_invalidate */
/* represent a notpresent pmd by faulting entry, this is used by pmdp_invalidate */
static inline pmd_t pmd_mknotpresent(pmd_t pmd)
{
return __pmd(0);
return __pmd(pmd_val(pmd) & ~L_PMD_SECT_VALID);
}
static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)

1
arch/arm/include/asm/pgtable.h
View File

@ -182,7 +182,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_present(pmd) (pmd_val(pmd))
static inline pte_t *pmd_page_vaddr(pmd_t pmd)
{

2
arch/arm/kernel/smp.c
View File

@ -486,7 +486,7 @@ static const char *ipi_types[NR_IPI] __tracepoint_string = {
static void smp_cross_call(const struct cpumask *target, unsigned int ipinr)
{
trace_ipi_raise(target, ipi_types[ipinr]);
trace_ipi_raise_rcuidle(target, ipi_types[ipinr]);
__smp_cross_call(target, ipinr);
}

1
arch/arm/kvm/arm.c
View File

@ -263,6 +263,7 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
kvm_timer_vcpu_terminate(vcpu);
kvm_vgic_vcpu_destroy(vcpu);
kvm_pmu_vcpu_destroy(vcpu);
kvm_vcpu_uninit(vcpu);
kmem_cache_free(kvm_vcpu_cache, vcpu);
}

1
arch/arm/mach-exynos/Kconfig
View File

@ -61,7 +61,6 @@ config ARCH_EXYNOS4
select CLKSRC_SAMSUNG_PWM if CPU_EXYNOS4210
select CPU_EXYNOS4210
select GIC_NON_BANKED
select KEYBOARD_SAMSUNG if INPUT_KEYBOARD
select MIGHT_HAVE_CACHE_L2X0
help
Samsung EXYNOS4 (Cortex-A9) SoC based systems

2
arch/arm/mach-imx/mach-imx6ul.c
View File

@ -46,7 +46,7 @@ static int ksz8081_phy_fixup(struct phy_device *dev)
static void __init imx6ul_enet_phy_init(void)
{
if (IS_BUILTIN(CONFIG_PHYLIB))
phy_register_fixup_for_uid(PHY_ID_KSZ8081, 0xffffffff,
phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK,
ksz8081_phy_fixup);
}

6
arch/arm/mach-omap1/ams-delta-fiq-handler.S
View File

@ -43,8 +43,8 @@
#define OTHERS_MASK (MODEM_IRQ_MASK | HOOK_SWITCH_MASK)
/* IRQ handler register bitmasks */
#define DEFERRED_FIQ_MASK (0x1 << (INT_DEFERRED_FIQ % IH2_BASE))
#define GPIO_BANK1_MASK (0x1 << INT_GPIO_BANK1)
#define DEFERRED_FIQ_MASK OMAP_IRQ_BIT(INT_DEFERRED_FIQ)
#define GPIO_BANK1_MASK OMAP_IRQ_BIT(INT_GPIO_BANK1)
/* Driver buffer byte offsets */
#define BUF_MASK (FIQ_MASK * 4)
@ -110,7 +110,7 @@ ENTRY(qwerty_fiqin_start)
mov r8, #2 @ reset FIQ agreement
str r8, [r12, #IRQ_CONTROL_REG_OFFSET]
cmp r10, #INT_GPIO_BANK1 @ is it GPIO bank interrupt?
cmp r10, #(INT_GPIO_BANK1 - NR_IRQS_LEGACY) @ is it GPIO interrupt?
beq gpio @ yes - process it
mov r8, #1

5
arch/arm/mach-omap1/ams-delta-fiq.c
View File

@ -109,7 +109,8 @@ void __init ams_delta_init_fiq(void)
* Since no set_type() method is provided by OMAP irq chip,
* switch to edge triggered interrupt type manually.
*/
offset = IRQ_ILR0_REG_OFFSET + INT_DEFERRED_FIQ * 0x4;
offset = IRQ_ILR0_REG_OFFSET +
((INT_DEFERRED_FIQ - NR_IRQS_LEGACY) & 0x1f) * 0x4;
val = omap_readl(DEFERRED_FIQ_IH_BASE + offset) & ~(1 << 1);
omap_writel(val, DEFERRED_FIQ_IH_BASE + offset);
@ -149,7 +150,7 @@ void __init ams_delta_init_fiq(void)
/*
* Redirect GPIO interrupts to FIQ
*/
offset = IRQ_ILR0_REG_OFFSET + INT_GPIO_BANK1 * 0x4;
offset = IRQ_ILR0_REG_OFFSET + (INT_GPIO_BANK1 - NR_IRQS_LEGACY) * 0x4;
val = omap_readl(OMAP_IH1_BASE + offset) | 1;
omap_writel(val, OMAP_IH1_BASE + offset);
}

2
arch/arm/mach-omap1/include/mach/ams-delta-fiq.h
View File

@ -14,6 +14,8 @@
#ifndef __AMS_DELTA_FIQ_H
#define __AMS_DELTA_FIQ_H
#include <mach/irqs.h>
/*
* Interrupt number used for passing control from FIQ to IRQ.
* IRQ12, described as reserved, has been selected.

12
arch/arm/mach-omap2/Kconfig
View File

@ -17,6 +17,7 @@ config ARCH_OMAP3
select PM_OPP if PM
select PM if CPU_IDLE
select SOC_HAS_OMAP2_SDRC
select ARM_ERRATA_430973
config ARCH_OMAP4
bool "TI OMAP4"
@ -36,6 +37,7 @@ config ARCH_OMAP4
select PM if CPU_IDLE
select ARM_ERRATA_754322
select ARM_ERRATA_775420
select OMAP_INTERCONNECT
config SOC_OMAP5
bool "TI OMAP5"
@ -67,6 +69,8 @@ config SOC_AM43XX
select HAVE_ARM_SCU
select GENERIC_CLOCKEVENTS_BROADCAST
select HAVE_ARM_TWD
select ARM_ERRATA_754322
select ARM_ERRATA_775420
config SOC_DRA7XX
bool "TI DRA7XX"
@ -240,4 +244,12 @@ endmenu
endif
config OMAP5_ERRATA_801819
bool "Errata 801819: An eviction from L1 data cache might stall indefinitely"
depends on SOC_OMAP5 || SOC_DRA7XX
help
A livelock can occur in the L2 cache arbitration that might prevent
a snoop from completing. Under certain conditions this can cause the
system to deadlock.
endmenu

1
arch/arm/mach-omap2/omap-secure.h
View File

@ -46,6 +46,7 @@
#define OMAP5_DRA7_MON_SET_CNTFRQ_INDEX 0x109
#define OMAP5_MON_AMBA_IF_INDEX 0x108
#define OMAP5_DRA7_MON_SET_ACR_INDEX 0x107
/* Secure PPA(Primary Protected Application) APIs */
#define OMAP4_PPA_L2_POR_INDEX 0x23

48
arch/arm/mach-omap2/omap-smp.c
View File

@ -50,6 +50,39 @@ void __iomem *omap4_get_scu_base(void)
return scu_base;
}
#ifdef CONFIG_OMAP5_ERRATA_801819
void omap5_erratum_workaround_801819(void)
{
u32 acr, revidr;
u32 acr_mask;
/* REVIDR[3] indicates erratum fix available on silicon */
asm volatile ("mrc p15, 0, %0, c0, c0, 6" : "=r" (revidr));
if (revidr & (0x1 << 3))
return;
asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
/*
* BIT(27) - Disables streaming. All write-allocate lines allocate in
* the L1 or L2 cache.
* BIT(25) - Disables streaming. All write-allocate lines allocate in
* the L1 cache.
*/
acr_mask = (0x3 << 25) | (0x3 << 27);
/* do we already have it done.. if yes, skip expensive smc */
if ((acr & acr_mask) == acr_mask)
return;
acr |= acr_mask;
omap_smc1(OMAP5_DRA7_MON_SET_ACR_INDEX, acr);
pr_debug("%s: ARM erratum workaround 801819 applied on CPU%d\n",
__func__, smp_processor_id());
}
#else
static inline void omap5_erratum_workaround_801819(void) { }
#endif
static void omap4_secondary_init(unsigned int cpu)
{
/*
@ -64,12 +97,15 @@ static void omap4_secondary_init(unsigned int cpu)
omap_secure_dispatcher(OMAP4_PPA_CPU_ACTRL_SMP_INDEX,
4, 0, 0, 0, 0, 0);
/*
* Configure the CNTFRQ register for the secondary cpu's which
* indicates the frequency of the cpu local timers.
*/
if (soc_is_omap54xx() || soc_is_dra7xx())
if (soc_is_omap54xx() || soc_is_dra7xx()) {
/*
* Configure the CNTFRQ register for the secondary cpu's which
* indicates the frequency of the cpu local timers.
*/
set_cntfreq();
/* Configure ACR to disable streaming WA for 801819 */
omap5_erratum_workaround_801819();
}
/*
* Synchronise with the boot thread.
@ -218,6 +254,8 @@ static void __init omap4_smp_prepare_cpus(unsigned int max_cpus)
if (cpu_is_omap446x())
startup_addr = omap4460_secondary_startup;
if (soc_is_dra74x() || soc_is_omap54xx())
omap5_erratum_workaround_801819();
/*
* Write the address of secondary startup routine into the

9
arch/arm/mach-omap2/powerdomain.c
View File

@ -186,8 +186,9 @@ static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag)
trace_state = (PWRDM_TRACE_STATES_FLAG |
((next & OMAP_POWERSTATE_MASK) << 8) |
((prev & OMAP_POWERSTATE_MASK) << 0));
trace_power_domain_target(pwrdm->name, trace_state,
smp_processor_id());
trace_power_domain_target_rcuidle(pwrdm->name,
trace_state,
smp_processor_id());
}
break;
default:
@ -523,8 +524,8 @@ int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst) {
/* Trace the pwrdm desired target state */
trace_power_domain_target(pwrdm->name, pwrst,
smp_processor_id());
trace_power_domain_target_rcuidle(pwrdm->name, pwrst,
smp_processor_id());
/* Program the pwrdm desired target state */
ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst);
}

76
arch/arm/mach-omap2/powerdomains7xx_data.c
View File

@ -36,14 +36,7 @@ static struct powerdomain iva_7xx_pwrdm = {
.prcm_offs = DRA7XX_PRM_IVA_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.pwrsts_logic_ret = PWRSTS_OFF,
.banks = 4,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* hwa_mem */
[1] = PWRSTS_OFF_RET, /* sl2_mem */
[2] = PWRSTS_OFF_RET, /* tcm1_mem */
[3] = PWRSTS_OFF_RET, /* tcm2_mem */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* hwa_mem */
[1] = PWRSTS_ON, /* sl2_mem */
@ -76,12 +69,7 @@ static struct powerdomain ipu_7xx_pwrdm = {
.prcm_offs = DRA7XX_PRM_IPU_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.pwrsts_logic_ret = PWRSTS_OFF,
.banks = 2,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* aessmem */
[1] = PWRSTS_OFF_RET, /* periphmem */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* aessmem */
[1] = PWRSTS_ON, /* periphmem */
@ -95,11 +83,7 @@ static struct powerdomain dss_7xx_pwrdm = {
.prcm_offs = DRA7XX_PRM_DSS_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.pwrsts_logic_ret = PWRSTS_OFF,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* dss_mem */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* dss_mem */
},
@ -111,13 +95,8 @@ static struct powerdomain l4per_7xx_pwrdm = {
.name = "l4per_pwrdm",
.prcm_offs = DRA7XX_PRM_L4PER_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_RET_ON,
.pwrsts_logic_ret = PWRSTS_RET,
.pwrsts = PWRSTS_ON,
.banks = 2,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* nonretained_bank */
[1] = PWRSTS_OFF_RET, /* retained_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* nonretained_bank */
[1] = PWRSTS_ON, /* retained_bank */
@ -132,9 +111,6 @@ static struct powerdomain gpu_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* gpu_mem */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* gpu_mem */
},
@ -148,8 +124,6 @@ static struct powerdomain wkupaon_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_ON,
.banks = 1,
.pwrsts_mem_ret = {
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* wkup_bank */
},
@ -161,15 +135,7 @@ static struct powerdomain core_7xx_pwrdm = {
.prcm_offs = DRA7XX_PRM_CORE_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_ON,
.pwrsts_logic_ret = PWRSTS_RET,
.banks = 5,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* core_nret_bank */
[1] = PWRSTS_OFF_RET, /* core_ocmram */
[2] = PWRSTS_OFF_RET, /* core_other_bank */
[3] = PWRSTS_OFF_RET, /* ipu_l2ram */
[4] = PWRSTS_OFF_RET, /* ipu_unicache */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* core_nret_bank */
[1] = PWRSTS_ON, /* core_ocmram */
@ -226,11 +192,7 @@ static struct powerdomain vpe_7xx_pwrdm = {
.prcm_offs = DRA7XX_PRM_VPE_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.pwrsts_logic_ret = PWRSTS_OFF,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* vpe_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* vpe_bank */
},
@ -260,14 +222,8 @@ static struct powerdomain l3init_7xx_pwrdm = {
.name = "l3init_pwrdm",
.prcm_offs = DRA7XX_PRM_L3INIT_INST,
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_RET_ON,
.pwrsts_logic_ret = PWRSTS_RET,
.pwrsts = PWRSTS_ON,
.banks = 3,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* gmac_bank */
[1] = PWRSTS_OFF_RET, /* l3init_bank1 */
[2] = PWRSTS_OFF_RET, /* l3init_bank2 */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* gmac_bank */
[1] = PWRSTS_ON, /* l3init_bank1 */
@ -283,9 +239,6 @@ static struct powerdomain eve3_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* eve3_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* eve3_bank */
},
@ -299,9 +252,6 @@ static struct powerdomain emu_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* emu_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* emu_bank */
},
@ -314,11 +264,6 @@ static struct powerdomain dsp2_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 3,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* dsp2_edma */
[1] = PWRSTS_OFF_RET, /* dsp2_l1 */
[2] = PWRSTS_OFF_RET, /* dsp2_l2 */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* dsp2_edma */
[1] = PWRSTS_ON, /* dsp2_l1 */
@ -334,11 +279,6 @@ static struct powerdomain dsp1_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 3,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* dsp1_edma */
[1] = PWRSTS_OFF_RET, /* dsp1_l1 */
[2] = PWRSTS_OFF_RET, /* dsp1_l2 */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* dsp1_edma */
[1] = PWRSTS_ON, /* dsp1_l1 */
@ -354,9 +294,6 @@ static struct powerdomain cam_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* vip_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* vip_bank */
},
@ -370,9 +307,6 @@ static struct powerdomain eve4_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* eve4_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* eve4_bank */
},
@ -386,9 +320,6 @@ static struct powerdomain eve2_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* eve2_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* eve2_bank */
},
@ -402,9 +333,6 @@ static struct powerdomain eve1_7xx_pwrdm = {
.prcm_partition = DRA7XX_PRM_PARTITION,
.pwrsts = PWRSTS_OFF_ON,
.banks = 1,
.pwrsts_mem_ret = {
[0] = PWRSTS_OFF_RET, /* eve1_bank */
},
.pwrsts_mem_on = {
[0] = PWRSTS_ON, /* eve1_bank */
},

7
arch/arm/mach-omap2/timer.c
View File

@ -496,8 +496,7 @@ void __init omap_init_time(void)
__omap_sync32k_timer_init(1, "timer_32k_ck", "ti,timer-alwon",
2, "timer_sys_ck", NULL, false);
if (of_have_populated_dt())
clocksource_probe();
clocksource_probe();
}
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM43XX)
@ -505,6 +504,8 @@ void __init omap3_secure_sync32k_timer_init(void)
{
__omap_sync32k_timer_init(12, "secure_32k_fck", "ti,timer-secure",
2, "timer_sys_ck", NULL, false);
clocksource_probe();
}
#endif /* CONFIG_ARCH_OMAP3 */
@ -513,6 +514,8 @@ void __init omap3_gptimer_timer_init(void)
{
__omap_sync32k_timer_init(2, "timer_sys_ck", NULL,
1, "timer_sys_ck", "ti,timer-alwon", true);
clocksource_probe();
}
#endif

2
arch/arm/mach-vexpress/spc.c
View File

@ -547,7 +547,7 @@ static struct clk *ve_spc_clk_register(struct device *cpu_dev)
init.name = dev_name(cpu_dev);
init.ops = &clk_spc_ops;
init.flags = CLK_IS_ROOT | CLK_GET_RATE_NOCACHE;
init.flags = CLK_GET_RATE_NOCACHE;
init.num_parents = 0;
return devm_clk_register(cpu_dev, &spc->hw);

2
arch/arm/plat-samsung/devs.c
View File

@ -68,7 +68,7 @@
#include <linux/platform_data/asoc-s3c.h>
#include <linux/platform_data/spi-s3c64xx.h>
static u64 samsung_device_dma_mask = DMA_BIT_MASK(32);
#define samsung_device_dma_mask (*((u64[]) { DMA_BIT_MASK(32) }))
/* AC97 */
#ifdef CONFIG_CPU_S3C2440

2
arch/arm64/Makefile
View File

@ -95,7 +95,7 @@ boot := arch/arm64/boot
Image: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
Image.%: vmlinux
Image.%: Image
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
zinstall install:

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