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Allow drivers to report at probe time that they cannot get all the resources
required by the device, and should be retried at a later time.
This should completely solve the problem of getting devices
initialized in the right order. Right now this is mostly handled by
mucking about with initcall ordering which is a complete hack, and
doesn't even remotely handle the case where device drivers are in
modules. This approach completely sidesteps the issues by allowing
driver registration to occur in any order, and any driver can request
to be retried after a few more other drivers get probed.
v4: - Integrate Manjunath's addition of a separate workqueue
- Change -EAGAIN to -EPROBE_DEFER for drivers to trigger deferral
- Update comment blocks to reflect how the code really works
v3: - Hold off workqueue scheduling until late_initcall so that the bulk
of driver probes are complete before we start retrying deferred devices.
- Tested with simple use cases. Still needs more testing though.
Using it to get rid of the gpio early_initcall madness, or to replace
the ASoC internal probe deferral code would be ideal.
v2: - added locking so it should no longer be utterly broken in that regard
- remove device from deferred list at device_del time.
- Still completely untested with any real use case, but has been
boot tested.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dilan Lee <dilee@nvidia.com>
Cc: Manjunath GKondaiah <manjunath.gkondaiah@linaro.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: David Daney <david.daney@cavium.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If multiple threads try, they trip over each other badly.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function is never used so remove it to avoid bit-rot.
It can trivially be re-added if there is ever a need.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As recent change means that we now dereference 'dev' before testing
for NULL.
That means either the change was wrong, or the test isn't needed.
As this function is only called from one driver (bq27x000_battery) and
it always passed a non-NULL dev, it seems good to assume that the
test isn't needed.
So remove it.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit b66b8b9a4a79087dde1b358a016e5c8739ccf186 ('intel-idle: convert
to x86_cpu_id auto probing') added a distinction between Nehalem and
Westemere processors and changed auto_demotion_disable_flags for the
former to 0. This was not explained in the commit message, so change
it back.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
w1_bq27000 adds a bq27000-battery platform device but does not provide
platform data for it. This causes the bq27x00 driver to dereference a NULL
pointer.
So provide the appropriate platform data. This requires modifying
w1_bq27000_read so that it find the w1 device as the parent of the bq device.
Also there is no point exporting w1_bq27000_read as nothing else uses it
or could use it. So make it static.
Finally, as there is no way to track how many batteries have been found, and
we will probably only find one, use an id number of '-1' to assert that this
is a unique instance.
Signed-off-by: NeilBrown <neilb@suse.de>
Tested-by: Thomas Weber <weber@corscience.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit fa8031aefec0cf7ea6c2387c93610d99d9659aa2 ('cpufreq: Add support
for x86 cpuinfo auto loading v4') added a device ID table to this
driver, but didn't declare it as the module device ID table.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit fa8031aefec0cf7ea6c2387c93610d99d9659aa2 ('cpufreq: Add support
for x86 cpuinfo auto loading v4') seems to have inadvertently changed
the matched CPU family number from 6 to 7. Change it back.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit b66b8b9a4a79087dde1b358a016e5c8739ccf186 ('intel-idle: convert
to x86_cpu_id auto probing') put two entries for model 0x2f
(Westmere-EX Xeon) in the device ID table and left out model 0x2e
(Nehalem-EX Xeon).
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Traditionally, any System-on-Chip based platform creates a flat list
of platform_devices directly under /sys/devices/platform.
In order to give these some better structure, this introduces a new
bus type for soc_devices that are registered with the new
soc_device_register() function. All devices that are on the same
chip should then be registered as child devices of the soc device.
The soc bus also exports a few standardised device attributes which
allow user space to query the specific type of soc.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This cuts down on the boilerplate code.
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Direct inclusion of the asm header has long been deprecated by the
introduction of gpiolib.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current code arbirarily limited the number of CPUs the guest could have.
Change that so that we can support the maximum number of CPUs the guest can
support. While we use NR_CPUS to size the per-cpu state all we are allocating
based on NR_CPUS are the pointers to per-cpu state that will be allocatted in
the context of the initializing CPU. This patch triggers a checkpatch warning
for the usage of NR_CPU and since all we are allocating a couple of pointers
per CPU, it should be ok.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now, cleanup the user/kernel KVP protocol by using the same structure
definition that is used for host/guest KVP protocol. This simplifies the code.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Someone forgot to test this one it seems.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In preparation for consolidating all KVP related defines into a single header file
that both the kernel and user level components can use, move the contents of
hv_kvp.h into hyperv.h.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current KVP code carries some private connector related defines.
Update connector.h to have all the KVP defines. As part of this patch
get rid of some unused defines.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This was done to resolve a merge and build problem with the
drivers/acpi/processor_driver.c file.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
hwmon: (sht15) fix bad error code
MAINTAINERS: Drop maintainer for MAX1668 hwmon driver
MAINTAINERS: Add hwmon entries for Wolfson
hwmon: (f71805f) Fix clamping of temperature limits
Here are some fixes to the pin control system that has accumulated since
-rc1. Mainly Tony Lindgren fixed the module load/unload logic and the
rest are minor fixes and documentation.
* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: add checks for empty function names
pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
pinctrl: fix some pinmux typos
pinctrl: free debugfs entries when unloading a pinmux driver
pinctrl: unbreak error messages
Documentation/pinctrl: fix a few syntax errors in code examples
pinctrl: fix pinconf_pins_show iteration
Big thing here is the movement of the 8250 serial drivers to their own
directory, now that the patch churn has calmed down.
Other than that, only minor stuff (omap patches were reverted as they
were found to be wrong), and another broken driver removed from the
system.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Merge tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Here are some tty/serial patches for 3.3-rc1
Big thing here is the movement of the 8250 serial drivers to their own
directory, now that the patch churn has calmed down.
Other than that, only minor stuff (omap patches were reverted as they
were found to be wrong), and another broken driver removed from the
system.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: Kill off Moorestown code
Revert "tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode"
Revert "tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip"
serial: Fix wakeup init logic to speed up startup
docbook: don't use serial_core.h in device-drivers book
serial: amba-pl011: lock console writes against interrupts
amba-pl011: do not disable RTS during shutdown
tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip
tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode
omap-serial: make serial_omap_restore_context depend on CONFIG_PM_RUNTIME
omap-serial :Make the suspend/resume functions depend on CONFIG_PM_SLEEP.
TTY: fix UV serial console regression
jsm: Fixed EEH recovery error
Updated TTY MAINTAINERS info
serial: group all the 8250 related code together
Nothing major, largest thing here is the removal of some drivers that
did not work at all. Other than that, the normal collection of bugfixes
and new device ids.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Merge tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Here are a bunch of USB patches for 3.3-rc1.
Nothing major, largest thing here is the removal of some drivers that
did not work at all. Other than that, the normal collection of bugfixes
and new device ids.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (52 commits)
uwb & wusb: fix kconfig error
USB: Realtek cr: fix autopm scheduling while atomic
USB: ftdi_sio: Add more identifiers
xHCI: Cleanup isoc transfer ring when TD length mismatch found
usb: musb: omap2430: minor cleanups.
qcaux: add more Pantech UML190 and UML290 ports
Revert "drivers: usb: Fix dependency for USB_HWA_HCD"
usb: mv-otg - Fix build if CONFIG_USB is not set
USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
usb: add support for STA2X11 host driver
drivers: usb: Fix dependency for USB_HWA_HCD
kernel-doc: fix new warning in usb.h
USB: OHCI: fix new compiler warnings
usb: serial: kobil_sct: fix compile warning:
drivers/usb/host/ehci-fsl.c: add missing iounmap
USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core
USB: cdc-wdm: call wake_up_all to allow driver to shutdown on device removal
USB: cdc-wdm: use two mutexes to allow simultaneous read and write
USB: cdc-wdm: updating desc->length must be protected by spin_lock
USB: usbsevseg: fix max length
...
1) Setting link attributes can modify the size of the attributes that
would be reported on a subsequent getlink netlink operation,
therefore min_ifinfo_dump_size needs to be adjusted. From Stefan
Gula.
2) Resegmentation of TSO frames while trimming can violate invariants
expected by callers, namely that the number of segments can only stay
the same or decrease, never increase. If MSS changes, however, we
can trim data but then end up with more segments. Fix this by only
segmenting to the MSS already recorded in the SKB. That's the
simplest fix for now and if we want to get more fancy in the future
that's a more involved change.
This probably explains some retransmit counter inaccuracies.
From Neal Cardwell.
3) Fix too-many-wakeups in POLL with AF_UNIX sockets, from Eric Dumazet.
4) Fix CAIF crashes wrt. namespace handling. From Eric Dumazet and
Eric W. Biederman.
5) TCP port selection fixes from Flavio Leitner.
6) More socket memory cgroup build fixes in certain randonfig
situations. From Glauber Costa.
7) Fix TCP memory sysctl regression reported by Ingo Molnar, also from
Glauber Costa.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
af_unix: fix EPOLLET regression for stream sockets
tcp: fix tcp_trim_head() to adjust segment count with skb MSS
net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
net caif: Register properly as a pernet subsystem.
netns: Fail conspicously if someone uses net_generic at an inappropriate time.
net: explicitly add jump_label.h header to sock.h
net: RTNETLINK adjusting values of min_ifinfo_dump_size
ipv6: Fix ip_gre lockless xmits.
xen-netfront: correct MAX_TX_TARGET calculation.
netns: fix net_alloc_generic()
tcp: bind() optimize port allocation
tcp: bind() fix autoselection to share ports
l2tp: l2tp_ip - fix possible oops on packet receive
iwlwifi: fix PCI-E transport "inta" race
mac80211: set bss_conf.idle when vif is connected
mac80211: update oper_channel on ibss join
which shook out in -rc. The bindings were overly enthusiatic when
deciding to set a voltage on a regulator and would try to set zero volts
on an unconfigured regulator which isn't supported.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
This fixes an integration issue with the regulator device tree bindings
which shook out in -rc. The bindings were overly enthusiatic when
deciding to set a voltage on a regulator and would try to set zero volts
on an unconfigured regulator which isn't supported.
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Set apply_uV only when min and max voltages are defined
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
[S390] dasd: revalidate server for new pathgroup
[S390] dasd: revert LCU optimization
[S390] cleanup entry point definition
The assignment of handle in vmw_framebuffer_create_handle doesn't actually do anything useful and is incorrectly assigning an integer value to a pointer argument. It appears that this is a typo and should be dereferencing handle rather than assigning to it directly. This fixes a bug where an undefined handle value is potentially returned to user-space.
Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Reviewed-by: Jakob Bornecrantz<jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Properly set the parent device of i2c buses before registering them so
that they will show at the right place in the device tree (rather than
in /sys/devices directly.)
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Dave Airlie <airlied@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
In particular, I found I was hitting the max-file limit in the VFS,
and the EFILE was being magically transformed into ENOMEM. Confusion
reigns.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This reverts commit 87499ffdcb1c70f66988cd8febc4ead0ba2f9118.
Where is that paper bag ... ah here.
I've failed to take an odd interaction between my other cleanups and
this reclaim_buffers patch into account and also failed to properly
test it. Looks like there are more dragons and hidden trapdoors in the
drm release path than actual lines of code.
Until I get a clue, let's just revert this.
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
NCT6776F only supports pwm mode for pwm2 and pwm3. Return error if an attempt
is made to set those pwm channels to DC mode.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
When no platform data was supplied, returned error code was 0.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Cc: stable@vger.kernel.org # 2.6.32+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.
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Merge tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Here are some patches for the 3.3-rc1 tree.
It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.
* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
stable: update documentation to ask for kernel version
base/core.c:fix typo in comment in function device_add
Documentation: devres: add allocation functions to list of supported calls
Documentation update for the driver model core
kernel-doc: fix new warnings in driver-core
kernel-doc: fix new warnings in debugfs
kernel-doc: fix new warnings in device.h
driver core: remove drivers/base/sys.c and include/linux/sysdev.h
* 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/granttable: Disable grant v2 for HVM domains.
x86: xen: size struct xen_spinlock to always fit in arch_spinlock_t
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm: (31 commits)
ARM: 7304/1: ioremap: fix boundary check when reusing static mapping
ARM: 7301/1: Rename the T() macro to TUSER() to avoid namespace conflicts
ARM: 7299/1: ftrace: clear zero bit in reported IPs for Thumb-2
ARM: 7298/1: realview: fix mapping of MPCore private memory region
PCMCIA: fix sa1111 oops on remove
ARM: 7288/1: mach-sa1100: add missing module_init() call
ARM: 7297/1: smp_twd: make sure timer is stopped before registering it
ARM: 7296/1: proc-v7.S: remove HARVARD_CACHE preprocessor guards
ARM: 7295/1: cortex-a7: move proc_info out of !CONFIG_ARM_LPAE block
ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
ARM: 7291/1: cache: assume 64-byte L1 cachelines for ARMv7 CPUs
ARM: 7290/1: vmlinux.lds.S: align the exception fixup table to a 4-byte boundary
ARM: 7289/1: vmlinux.lds.S: do not hardcode cacheline size as 32 bytes
MFD: ucb1x00-ts: fix resume failure
MFD: ucb1x00-core: fix gpiolib direction_output handling
MFD: ucb1x00-core: fix missing restore of io output data on resume
MFD: mcp-core: fix mcp_priv() to be more type safe
MFD: mcp-core: fix complaints from the genirq layer
Revert "ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus."
Revert "ARM: sa1100: Refactor mcp-sa11x0 to use platform resources."
...
Fix up conflict due to arch/arm/mach-mx5/Kconfig having been merged into
mach-imx5 (commit 784a90c0a7d8: "ARM i.MX: Merge i.MX5 support into
mach-imx"), but the ARM_L1_CACHE_SHIFT_6 entry was moved to be driven by
the CPU_V7 logic from it in the old location in rmk's branch (commit
a092f2b15399: "ARM: 7291/1: cache: assume 64-byte L1 cachelines for
ARMv7 CPUs").
AT91 needed reset fixes which resulted in some minor code refactoring,
it also adds a feature-removal for one of their platforms for 3.4.
The USB patches have been acked by Greg K-H.
i.MX and ux500 both have some minor fixes, nothing controversial.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
arm-soc fixes for 3.3-rc:
AT91 needed reset fixes which resulted in some minor code refactoring,
it also adds a feature-removal for one of their platforms for 3.4.
The USB patches have been acked by Greg K-H.
i.MX and ux500 both have some minor fixes, nothing controversial.
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arch/arm/mach-imx/mach-mx53_ard.c: add missing iounmap
ARM: imx: iomux-v1.h: Fix build error due to __init annotation
ARM: at91: Fix at91sam9g45 and at91cap9 reset
ARM: at91: make rstc soc independent
ARM: at91: introduce AT91_SAM9_ALT_RESET to select the at91sam9 alternative reset
ARM: at91: merge at91cap9_ddrsdr.h in at91sam9_ddrsdr.h
ARM: at91: fix cap9 ddrsdr register
ARM/USB: at91/ohci-at91: rename vbus_pin_inverted to vbus_pin_active_low
USB: at91: fix clk_get error handling
ARM: at91: removal of CAP9 SoC family
ARM: at91: fix at91rm9200 soc subtype handling
mach-ux500: no MMC_CAP_SD_HIGHSPEED on Snowball
mach-ux500: enable ARM errata 764369
mach-ux500: do not override outer.inv_all
mach-ux500: musb: now musb is always in OTG mode
ARM: imx6: add missing twd_clk for imx6q clock
This patch (as1516) fixes a bug introduced during the removal of
put_driver() and get_driver() from drivers/pci/xen-pcifront.c.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Use virtio_mb() to make sure the available index to be exposed before
checking the the avail event. Otherwise we may get stale value of
avail event in guest and never kick the host after.
Note: this fixes a bug introduced by ee7cd8981e15bcb365fc762afe3fc47b8242f630.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
Note: this fixes a bug introduced recently in
7b21e34fd1c272e3a8c3846168f2f6287a4cd72b.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
gma500: Fix suspend/resume functions
drm/exynos: fixed pm feature for fimd module.
MAINTAINERS: added maintainer entry for Exynos DRM Driver.
drm/exynos: fixed build dependency for DRM_EXYNOS_FIMD
drm/exynos: fix build dependency for DRM_EXYNOS_HDMI
drm/exynos: use release_mem_region instead of release_resource
agp: fix scratch page cleanup
drm/i915: fixup forcewake spinlock fallout in drpc debugfs function
drm/i915: debugfs: show semaphore registers also on gen7
drm/i915: allow userspace forcewake references also on gen7
drm/i915: Re-enable gen7 RC6 and GPU turbo after resume.
drm/i915: Correct debugfs printout for RC1e.
Revert "drm/i915: Work around gen7 BLT ring synchronization issues."
drm/i915: rip out the HWSTAM missed irq workaround
drm/i915: paper over missed irq issues with force wake voodoo
drm/i915: Hold gt_lock across forcewake register reads
drm/i915: Hold gt_lock during reset
drm/i915: Move reset forcewake processing to gen6_do_reset
drm/i915: protect force_wake_(get|put) with the gt_lock
drm/i915: convert force_wake_get to func pointer in the gpu reset code
...
Both the suspend and resume functions incorrectly set psbfb =
to_psb_fb(NULL) outside of the loop over all of the framebuffers. Fix
this by moving the assignment of psbfb inside the loop and removing the
initialisation of fb.
Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This patch adds the TCO Watchdog DeviceIDs for the Intel Lynx Point PCH.
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Let the watchdog core to check the valid value range of min_timeout/max_timeout.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Correct typo "unexpectdly" to "unexpectedly" in pnx4008_wdt.c
and stmp3xxx_wdt.c
Signed-off-by: Masanari Iida<standby24x7@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
While receiving WDIOS_DISABLECARD option for WDIOC_SETOPTIONS command,
call wafwdt_stop() to disable watchdog.
Call wafwdt_start() while receiving WDIOS_ENABLECARD option.
Current code has reverse behavior.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
