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This reverts commit 3c5b006f3ee800b4bd9ed37b3a8f271b8560126e.
gadget_is_{super|dual}speed() API check UDC controller capitblity. It
should pass down highest speed endpoint descriptor to UDC controller. So
UDC controller driver can reserve enough resource at check_config(),
especially mult and maxburst. So UDC driver (such as cdns3) can know need
at least (mult + 1) * (maxburst + 1) * wMaxPacketSize internal memory for
this uvc functions.
Cc: <stable@vger.kernel.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231224153816.1664687-5-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Supposed DMA cross 4k bounder problem should be fixed at DEV_VER_V2, but
still met problem when do ISO transfer if sg enabled.
Data pattern likes below when sg enabled, package size is 1k and mult is 2
[UVC Header(8B) ] [data(3k - 8)] ...
The received data at offset 0xd000 will get 0xc000 data, len 0x70. Error
happen position as below pattern:
0xd000: wrong
0xe000: wrong
0xf000: correct
0x10000: wrong
0x11000: wrong
0x12000: correct
...
To avoid DMA cross 4k bounder at ISO transfer, reduce burst len according
to start DMA address's alignment.
Cc: <stable@vger.kernel.org>
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231224153816.1664687-4-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ISO basic transfer is
ITP(SOF) Package_0 Package_1 ... Package_n
CDNS3 DMA start dma transfer from memmory to internal FIFO when get SOF,
controller will transfer data to usb bus from internal FIFO when get IN
token.
According USB spec defination:
Maximum number of packets = (bMaxBurst + 1) * (Mult + 1)
Internal memory should be the same as (bMaxBurst + 1) * (Mult + 1). DMA
don't fetch data advance when ISO transfer, so only reserve
(bMaxBurst + 1) * (Mult + 1) internal memory for ISO transfer.
Need save Mult and bMaxBurst information and set it into EP_CFG register,
otherwise only 1 package is sent by controller, other package will be
lost.
Cc: <stable@vger.kernel.org>
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231224153816.1664687-3-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When IP version >= DEV_VER_V2, gadget:sg_supported is true. So uvc gadget
function driver will use sg to equeue data, first is 8bytes header, the
second is 1016bytes data.
cdns3_prepare_trb: ep2in: trb 0000000000ac755f, dma buf: 0xbf455000, size: 8, burst: 128 ctrl: 0x00000415 (C=1, T=0, ISP, CHAIN, Normal)
cdns3_prepare_trb: ep2in: trb 00000000a574e693, dma buf: 0xc0200fe0, size: 1016, burst: 128 ctrl: 0x00000405 (C=1, T=0, ISP, Normal)
But cdns3_ep_run_transfer() can't correctly handle this case, which only
support one TRB for ISO transfer.
The controller requires duplicate the TD for each SOF if priv_ep->interval
is not 1. DMA will read data from DDR to internal FIFO when get SOF. Send
data to bus when receive IN token. DMA always refill FIFO when get SOF
regardless host send IN token or not. If host send IN token later, some
frames data will be lost.
Fixed it by below major steps:
1. Calculate numembers of TRB base on sg_nums and priv_ep->interval.
2. Remove CHAIN flags for each end TRB of TD when duplicate TD.
3. The controller requires LINK TRB must be first TRB of TD. When check
there are not enough TRBs lefts, just fill LINK TRB for left TRBs.
.... CHAIN_TRB DATA_TRB, CHAIN_TRB DATA_TRB, LINK_TRB ... LINK_TRB
^End of TRB List
Cc: <stable@vger.kernel.org>
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231224153816.1664687-2-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The max segment size is currently limited to the ethernet frame length of
the kernel which happens to be 1514 at this point in time. However the NCM
specification limits it to 64K for sixtenn bit NTB's. For peer to peer
connections, increasing the segment size gives better throughput.
Add support to configure this value before configfs symlink is created.
Also since the NTB Out/In buffer sizes are fixed at 16384 bytes, limit the
segment size to an upper cap of 8000 to allow at least a minimum of 2 MTU
sized datagrams to be aggregated.
Set the default MTU size for the ncm interface during function bind before
network interface is registered allowing MTU to be set in parity with
wMaxSegmentSize.
Update gadget documentation describing the new configfs property.
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Link: https://lore.kernel.org/r/20231221153216.18657-1-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For device mode, if PM runtime autosuspend feature enabled, the
runtime power status of dwc3 may be suspended when run dwc3_resume(),
and dwc3 gadget would not be configured in dwc3_gadget_run_stop().
It would cause gadget connected failed if USB cable has been plugged
before PM resume. So move forward pm_runtime_set_active() to fix it.
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Link: https://lore.kernel.org/r/20231206065939.16958-1-frank.wang@rock-chips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Support configuration and use of bulk endpoints in the so-called EBC
mode described in the DBC_usb31 databook (appendix E)
Added a bit fifo_mode to usb_ep to indicate to the UDC driver that a
specific endpoint is to operate in the EBC (or equivalent) mode when
enabled
Added macros for bits 15 and 14 of DEPCFG parameter 1 to indicate EBC
mode and write back behaviour. These bits will be set to 1 when
configuring an EBC endpoint as described in the programming guide
Signed-off-by: Manan Aurora <maurora@google.com>
Link: https://lore.kernel.org/r/20231031034641.660606-1-maurora@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Refactor tcpm_fw_get_caps to support the multiple pd capabilities got
from fwnode. For backward compatibility, the original single capability
is still applicable. The fetched data is stored in the newly defined
structure "pd_data" and there is an array "pd_list" to store the
pointers to them. A dedicated array "pds" is used to store the handles
of the registered usb_power_delivery instances.
Also implement the .pd_get and .pd_set ops which are introduced in
commit a7cff92f0635 ("usb: typec: USB Power Delivery helpers for ports
and partners"). Once the .pd_set is called, the current capability will
be updated and state machine will re-negotiate the power contract if
possible.
Signed-off-by: Kyle Tso <kyletso@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231216104630.2720818-3-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xhci retaining bogus hardware states cause usb disconnect devices
connected before hibernation(s4) and refer to the commit 'f3d478858be
("usb: ohci-platform: fix usb disconnect issue after s4")' which set
flag "hibernated" as true when resume-from-hibernation and that the
drivers will reset the hardware to get rid of any existing state and
make sure resume from hibernation re-enumerates everything for xhci.
Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Link: https://lore.kernel.org/r/20231228071113.1719-1-zhuyinbo@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently for dwc3_usb31 controller, if maximum_speed is limited to
super-speed in DT, then device mode is limited to SS, but host mode
still works in SSP.
The documentation for max-speed property is as follows:
"Tells USB controllers we want to work up to a certain speed.
Incase this isn't passed via DT, USB controllers should default to
their maximum HW capability."
It doesn't specify that the property is only for device mode.
There are cases where we need to limit the host's maximum speed to
SuperSpeed only. Use this property for host mode to contrain host's
speed to SuperSpeed.
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20231219041559.15789-1-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current implementation blocks the running operations when Plug-out and
Plug-In is performed continuously, process gets stuck in
dwc3_thread_interrupt().
Code Flow:
CPU1
->Gadget_start
->dwc3_interrupt
->dwc3_thread_interrupt
->dwc3_process_event_buf
->dwc3_process_event_entry
->dwc3_endpoint_interrupt
->dwc3_ep0_interrupt
->dwc3_ep0_inspect_setup
->dwc3_ep0_stall_and_restart
By this time if pending_list is not empty, it will get the next request
on the given list and calls dwc3_gadget_giveback which will unmap request
and call its complete() callback to notify upper layers that it has
completed. Currently dwc3_gadget_giveback status is set to -ECONNRESET,
whereas it should be -ESHUTDOWN based on condition if not dwc->connected
is true.
Cc: <stable@vger.kernel.org>
Fixes: d742220b3577 ("usb: dwc3: ep0: giveback requests on stall_and_restart")
Signed-off-by: Uttkarsh Aggarwal <quic_uaggarwa@quicinc.com>
Link: https://lore.kernel.org/r/20231222094704.20276-1-quic_uaggarwa@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A freezable kernel thread can enter frozen state during freezing by
either calling try_to_freeze() or using wait_event_freezable() and its
variants. So for the following snippet of code in a kernel thread loop:
wait_event_interruptible_timeout();
try_to_freeze();
We can change it to a simple wait_event_freezable_timeout() and
then eliminate a function call.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Link: https://lore.kernel.org/r/20231218074730.1898699-1-haokexin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current EP0 dequeue path will share the same as other EPs. However, there
are some special considerations that need to be made for EP0 transfers:
- EP0 transfers never transition into the started_list
- EP0 only has one active request at a time
In case there is a vendor specific control message for a function over USB
FFS, then there is no guarantee on the timeline which the DATA/STATUS stage
is responded to. While this occurs, any attempt to end transfers on
non-control EPs will end up having the DWC3_EP_DELAY_STOP flag set, and
defer issuing of the end transfer command. If the USB FFS application
decides to timeout the control transfer, or if USB FFS AIO path exits, the
USB FFS driver will issue a call to usb_ep_dequeue() for the ep0 request.
In case of the AIO exit path, the AIO FS blocks until all pending USB
requests utilizing the AIO path is completed. However, since the dequeue
of ep0 req does not happen properly, all non-control EPs with the
DWC3_EP_DELAY_STOP flag set will not be handled, and the AIO exit path will
be stuck waiting for the USB FFS data endpoints to receive a completion
callback.
Fix is to utilize dwc3_ep0_reset_state() in the dequeue API to ensure EP0
is brought back to the SETUP state, and ensures that any deferred end
transfer commands are handled. This also will end any active transfers
on EP0, compared to the previous implementation which directly called
giveback only.
Fixes: fcd2def66392 ("usb: dwc3: gadget: Refactor dwc3_gadget_ep_dequeue")
Cc: stable <stable@kernel.org>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20231206201814.32664-1-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The TPS6598x PD controller supports firmware updates that can be loaded
either from an external flash memory or a host using the device's I2C
host interface. This patch implements the second approach, which is
especially relevant if no flash memory is available.
In order to make patch bundle updates, a series of tasks (special
commands) must be sent to the device as it is documented in the
TPS65987DDH and TPS65988DH Host Interface Technical Reference Manual[1],
section 4.11 (Patch Bundle Update Tasks).
The update sequence is as follows:
1. PTCs - Start Patch Load Sequence: the proposed approach includes
device and application configuration data.
2. PTCd - Patch Download: 64-byte data chunks must be sent until the end
of the firmware file is reached (the last chunk may be shorter).
3. PTCc - Patch Data Transfer Complete: ends the patch loading sequence.
After this sequence and if no errors occurred, the device will change
its mode to 'APP' after SETUP_MS milliseconds, and then it will be ready
for normal operation.
[1] https://www.ti.com/lit/ug/slvubh2b/slvubh2b.pdf?ts=1697623299919&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS65987D
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231207-tps6598x_update-v2-4-f3cfcde6d890@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The input data passed to execute commands with tps6598x_exec_cmd()
is not supposed to be modified by the function. Moreover, this data is
passed to tps6598x_exec_cmd_tmo() and finally to tps6598x_block_write(),
which expects a const pointer.
The current implementation does not produce any bugs, but it discards
const qualifiers from the pointers passed as arguments. This leads to
compile issues if 'discarded-qualifiers' is active and a const pointer
is passed to the function, which is the case if data from a firmware
structure is passed to execute update commands. Adding the const
modifier to in_data prevents such issues and provides code consistency.
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231207-tps6598x_update-v2-3-f3cfcde6d890@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The firmware request process is device agnostic and can be used for
other parts.
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231207-tps6598x_update-v2-2-f3cfcde6d890@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current implementation includes a number of special cases for the
tps25750. Nevertheless, init and reset functions can be generalized by
adding function pointers to the tipd_data structure in order to offer
that functionality to other parts without additional conditional
clauses.
Some functionality like the cold reset request (GAID) is shared by the
tps25750 and the tps6598x, so they can use the same reset function.
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231207-tps6598x_update-v2-1-f3cfcde6d890@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit e835c0a4e23c38531dcee5ef77e8d1cf462658c7.
Don't omit soft-reset. During initialization, the driver may need to
perform a soft reset to ensure the phy is ready when the controller
updates the GCTL.PRTCAPDIR or other settings by issuing phy soft-reset.
Many platforms often have access to DCTL register for soft-reset despite
being host-only. If there are actual reported issues from the platforms
that don't expose DCTL registers, then we will need to revisit (perhaps
to teach dwc3 to perform xhci's soft-reset USBCMD.HCRST).
Cc: <stable@vger.kernel.org>
Fixes: e835c0a4e23c ("usb: dwc3: don't reset device side if dwc3 was configured as host-only")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/7668ab11a48f260820825274976eb41fec7f54d1.1703282469.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DWC2 IP on the Rockchip SoCs doesn't support clock gating.
When a clock gating is enabled, system hangs.
Signed-off-by: William Wu <william.wu@rock-chips.com>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Link: https://lore.kernel.org/r/1703575199-23638-1-git-send-email-william.wu@rock-chips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Support for SM8650 and X1E is added to the LLCC driver, the
LLCC_TRP_ATTR2_CFGn register stride is corrected, and a bug where for
each iteration looping over slices previous settings for dis_cap_alloc
and retain_on_pc are overwritten.
A quirk is introduced in UCSI, for implementations that does not handle
UCSI_GET_PDOS for non-PD partners. With this, USCI support is enabled by
default in pmic_glink. It is later reverted for SC8280XP due reported
errors.
A few memory leaks in error paths of qseecom are taken care of.
A small driver to expose the ADSP PDCharger ULOG debug log is
introduced, to aid debugging issues with pmic_glink.
The identiy of SM8650, PM8937 and a few DSPs are added to the Qualcomm
socinfo driver.
The Qualcomm sleep stats driver is extended to allow getting detailed
statistics about usage of various DDR states. Unfortunately this ABI
does not seem to be stable across platforms, so this addition is dropped
again while the reported problems are investigated further.
Andy is moved from MAINTAINERS to CREDITS. Thank you, Andy.
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Merge tag 'qcom-drivers-for-6.8' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
Qualcomm driver updates for v6.8
Support for SM8650 and X1E is added to the LLCC driver, the
LLCC_TRP_ATTR2_CFGn register stride is corrected, and a bug where for
each iteration looping over slices previous settings for dis_cap_alloc
and retain_on_pc are overwritten.
A quirk is introduced in UCSI, for implementations that does not handle
UCSI_GET_PDOS for non-PD partners. With this, USCI support is enabled by
default in pmic_glink. It is later reverted for SC8280XP due reported
errors.
A few memory leaks in error paths of qseecom are taken care of.
A small driver to expose the ADSP PDCharger ULOG debug log is
introduced, to aid debugging issues with pmic_glink.
The identiy of SM8650, PM8937 and a few DSPs are added to the Qualcomm
socinfo driver.
The Qualcomm sleep stats driver is extended to allow getting detailed
statistics about usage of various DDR states. Unfortunately this ABI
does not seem to be stable across platforms, so this addition is dropped
again while the reported problems are investigated further.
Andy is moved from MAINTAINERS to CREDITS. Thank you, Andy.
* tag 'qcom-drivers-for-6.8' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (34 commits)
soc: qcom: llcc: Fix LLCC_TRP_ATTR2_CFGn offset
firmware: qcom: qseecom: fix memory leaks in error paths
soc: qcom: llcc: Fix typo in kernel-doc
dt-bindings: soc: qcom,aoss-qmp: document the X1E80100 Always-On Subsystem side channel
MAINTAINERS: qcom: move Andy Gross to credits
soc: qcom: pmic_glink: drop stray semicolons
soc: qcom: pmic_glink: disable UCSI on sc8280xp
soc: qcom: llcc: Fix dis_cap_alloc and retain_on_pc configuration
soc: qcom: pmic_pdcharger_ulog: Fix hypothetical ulog request message endianess
soc: qcom: pmic_pdcharger_ulog: Move TRACE_SYSTEM out of #if protection
soc: qcom: pmic_pdcharger_ulog: Search current directory for headers
soc: qcom: socinfo: Add few DSPs to get their image details
soc: qcom: llcc: Add missing description for members in slice config
Revert "soc: qcom: stats: Add DDR sleep stats"
dt-bindings: firmware: qcom,scm: Allow interconnect for everyone
dt-bindings: firmware: qcom,scm: document SCM on X1E80100 SoCs
soc: qcom: socinfo: Add PM8937 Power IC
soc: qcom: llcc: Add configuration data for X1E80100
dt-bindings: cache: qcom,llcc: Add X1E80100 compatible
soc: qcom: pmic_glink_altmode: fix port sanity check
...
Link: https://lore.kernel.org/r/20231219041855.732578-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Here are some new modem device ids and a rename of a few ftdi product id
defines.
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-6.7-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial device ids for 6.7-rc6
Here are some new modem device ids and a rename of a few ftdi product id
defines.
All have been in linux-next with no reported issues.
* tag 'usb-serial-6.7-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add Quectel EG912Y module support
USB: serial: ftdi_sio: update Actisense PIDs constant names
USB: serial: option: add Quectel RM500Q R13 firmware support
USB: serial: option: add Foxconn T99W265 with new baseline
Update the constant names for unused USB PIDs (product identifiers) to
reflect the new products now using the PIDs.
Signed-off-by: Mark Glover <mark.glover@actisense.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
UAPI Changes:
Cross-subsystem Changes:
- A few fixes for usb/typec
Core Changes:
- ci: Updates to the defconfig, igt version, etc.
- writeback: Move the atomic_check helper from the encoder to connector
Driver Changes:
- rockchip: Add support for rk3588
- xe: Update the TODO list
- panel:
- nv3052c: Register documentation, init sequence improvements and
support for the Fascontek FS035VG158
- st7701: Add support for the Anbernic RG-ARC
- new driver: Synaptics R63353 panel controller, Ilitek ILI9805 panel
controller
- new panel: AUO G156HAN04.0
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Merge tag 'drm-misc-next-2023-12-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for $kernel-version:
UAPI Changes:
Cross-subsystem Changes:
- A few fixes for usb/typec
Core Changes:
- ci: Updates to the defconfig, igt version, etc.
- writeback: Move the atomic_check helper from the encoder to connector
Driver Changes:
- rockchip: Add support for rk3588
- xe: Update the TODO list
- panel:
- nv3052c: Register documentation, init sequence improvements and
support for the Fascontek FS035VG158
- st7701: Add support for the Anbernic RG-ARC
- new driver: Synaptics R63353 panel controller, Ilitek ILI9805 panel
controller
- new panel: AUO G156HAN04.0
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/aqpn5miejmkks7pbcfex7b6u63uwsruywxsnr3x5ljs45qatin@nbkkej2elk46
Some of the boards supported by the TCPM drivers can support USB-C
Accessory Modes (Analog Audio, Debug). Parse information about supported
modes from the device tree.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20231215173005.313422-3-dmitry.baryshkov@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During device enumeration usb core resets endpoint 0 if the max packet
size value differs from the one read from the device descriptor.
usb core will additionally reset endpoint 0 during S4 resume, before
re-enumerating the device, if the device has a reset-resume flag set.
In this case the xhci device representation vdev may be lost due to
xHC restore error and re-initialization during S4 resume.
Make sure slot_id and vdev are valid before trying to re-configure max
packet size during endpoint 0 reset.
max packet size will be re-configured later during re-enumeration.
This fixes commit e34900f46cd6 ("xhci: Reconfigure endpoint 0 max packet
size only during endpoint reset") which is currently in usb-next,
on its way to 6.8
Fixes: e34900f46cd6 ("xhci: Reconfigure endpoint 0 max packet size only during endpoint reset")
Tested-by: Wendy Wang <wendy.wang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231215125707.1732989-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls")
has rendered the precomposed (aka legacy) webcam gadget unloadable.
uvc_alloc() since then has depended on certain config groups being
available in configfs tree related to the UVC function. However, legacy
gadgets do not create anything in configfs, so uvc_alloc() must fail
with -ENOENT no matter what.
This patch mimics the required configfs hierarchy to satisfy the code which
inspects formats and frames found in uvcg_streaming_header.
This has been tested with guvcview on the host side, using vivid as a
source of video stream on the device side and using the userspace program
found at https://gitlab.freedesktop.org/camera/uvc-gadget.git.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Fixes: 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls")
Link: https://lore.kernel.org/r/20231215131614.29132-1-andrzej.p@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here "temp" is the number of characters that we have written and "size"
is the size of the buffer. The intent was clearly to say that if we have
written to the end of the buffer then stop.
However, for that to work the comparison should have been done on the
original "size" value instead of the "size -= temp" value. Not only
will that not trigger when we want to, but there is a small chance that
it will trigger incorrectly before we want it to and we break from the
loop slightly earlier than intended.
This code was recently changed from using snprintf() to scnprintf(). With
snprintf() we likely would have continued looping and passed a negative
size parameter to snprintf(). This would have triggered an annoying
WARN(). Now that we have converted to scnprintf() "size" will never
drop below 1 and there is no real need for this test. We could change
the condition to "if (temp <= 1) goto done;" but just deleting the test
is cleanest.
Fixes: 7d50195f6c50 ("usb: host: Faraday fotg210-hcd driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/ZXmwIwHe35wGfgzu@suswa
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This flash drive reports write protect during the first mode sense.
In the past this was not an issue as the kernel called revalidate twice,
thus asking the device for its write protect status twice, with write
protect being disabled in the second mode sense.
However, since commit 1e029397d12f ("scsi: sd: Reorganize DIF/DIX code to
avoid calling revalidate twice") that is no longer the case, thus the
device shows up read only.
[490891.289495] sd 12:0:0:0: [sdl] Write Protect is on
[490891.289497] sd 12:0:0:0: [sdl] Mode Sense: 2b 00 80 08
This does not appear to be a timing issue, as enabling the usbcore quirk
USB_QUIRK_DELAY_INIT has no effect on write protect.
Fixes: 1e029397d12f ("scsi: sd: Reorganize DIF/DIX code to avoid calling revalidate twice")
Cc: stable <stable@kernel.org>
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20231207134441.298131-1-tasos@tasossah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the recently added connector sanity check which was off by one and
prevented orientation notifications from being handled correctly for the
second port when using GPIOs to determine orientation.
Fixes: c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events")
Cc: stable <stable@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231208123603.29957-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When compiling with gcc version 14.0.0 20231206 (experimental)
and CONFIG_FORTIFY_SOURCE=y, I've noticed the following warning:
...
In function 'fortify_memcpy_chk',
inlined from '__ffs_func_bind_do_os_desc' at drivers/usb/gadget/function/f_fs.c:2934:3:
./include/linux/fortify-string.h:588:25: warning: call to '__read_overflow2_field'
declared with attribute warning: detected read beyond size of field (2nd parameter);
maybe use struct_group()? [-Wattribute-warning]
588 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This call to 'memcpy()' is interpreted as an attempt to copy both
'CompatibleID' and 'SubCompatibleID' of 'struct usb_ext_compat_desc'
from an address of the first one, which causes an overread warning.
Since we actually want to copy both of them at once, use the
convenient 'struct_group()' and 'sizeof_field()' here.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://lore.kernel.org/r/20231214090428.27292-1-dmantipov@yandex.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since snprintf() has the documented, but still rather strange trait of
returning the length of the data that *would have been* written to the
array if space were available, rather than the arguably more useful
length of data *actually* written, it is usually considered wise to use
something else instead in order to avoid confusion.
In the case of sysfs call-backs, new wrappers exist that do just that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <usb-storage@lists.one-eyed-alien.net>
Signed-off-by: Lee Jones <lee@kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20231213164246.1021885-13-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since snprintf() has the documented, but still rather strange trait of
returning the length of the data that *would have been* written to the
array if space were available, rather than the arguably more useful
length of data *actually* written, it is usually considered wise to use
something else instead in order to avoid confusion.
In the case of sysfs call-backs, new wrappers exist that do just that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Hema HK <hemahk@ti.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-12-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-11-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-10-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Whilst we're at it, let's define some magic numbers to increase
readability and ease of maintenance.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Tomoki Sekiyama <tomoki.sekiyama@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-9-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Cristian Birsan <cristian.birsan@microchip.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-8-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-7-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Cristian Birsan <cristian.birsan@microchip.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-6-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Scally <dan.scally@ideasonboard.com>
Cc: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20231213164246.1021885-5-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: James Gruber <jimmyjgruber@gmail.com>
Cc: Yadwinder Singh <yadi.brar01@gmail.com>
Cc: Jaswinder Singh <jaswinder.singh@linaro.org>
Cc: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-4-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Cc: Julian Scheel <julian@jusst.de>
Cc: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-3-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a general misunderstanding amongst engineers that {v}snprintf()
returns the length of the data *actually* encoded into the destination
array. However, as per the C99 standard {v}snprintf() really returns
the length of the data that *would have been* written if there were
enough space for it. This misunderstanding has led to buffer-overruns
in the past. It's generally considered safer to use the {v}scnprintf()
variants in their place (or even sprintf() in simple cases). So let's
do that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-2-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
