Commit Graph

678 Commits

Author SHA1 Message Date
Fabrice Gasnier
e702a7c346 usb: gadget: f_serial: add suspend resume callbacks
Add suspend resume callbacks to notify u_serial of the bus suspend/resume
state.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-05-25 11:09:39 +03:00
Fabrice Gasnier
aba3a8d01d usb: gadget: u_serial: add suspend resume callbacks
Add suspend resume callbacks to handle the case seen when the bus is
suspended by the HOST, and the device opens the port (cat /dev/ttyGS0).

Gadget controller (like DWC2) doesn't accept usb requests to be queued in
this case (when in L2 state), from the gs_open() call. Error log is printed
- configfs-gadget gadget: acm ttyGS0 can't notify serial state, -11
If the HOST resumes (opens) the bus, the port still isn't functional.

Use suspend/resume callbacks to monitor the gadget suspended state by using
'suspended' flag. In case the port gets opened (cat /dev/ttyGS0), the I/O
stream will be delayed until the bus gets resumed by the HOST.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-05-25 11:09:39 +03:00
Michael Grzeschik
43cd002387 usb: gadget: uvc_video: add worker to handle the frame pumping
This patch changes the function uvc_video_pump to be a separate
scheduled worker. This way the completion handler of each usb request
and every direct caller of the pump has only to schedule the worker
instead of doing the request handling by itself.

Moving the request handling to one thread solves the locking problems
between the three queueing cases in the completion handler, v4l2_qbuf
and video_enable.

Many drivers handle the completion handlers directly in their interrupt
handlers. This patch also reduces the workload on each interrupt.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-05-25 11:09:38 +03:00
Jason Yan
a54177d2dc usb: gadget: f_fs: remove unneeded semicolon in __ffs_data_got_descs()
Fix the following coccicheck warning:

drivers/usb/gadget/function/f_fs.c:2507:2-3: Unneeded semicolon

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-05-25 11:09:38 +03:00
Nishad Kamdar
2e75973832 USB: gadget: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to USB peripheral controller drivers.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-05-05 10:58:49 +03:00
Udipto Goswami
1c2e54fbf1 usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
For userspace functions using OS Descriptors, if a function also supplies
Extended Property descriptors currently the counts and lengths stored in
the ms_os_descs_ext_prop_{count,name_len,data_len} variables are not
getting reset to 0 during an unbind or when the epfiles are closed. If
the same function is re-bound and the descriptors are re-written, this
results in those count/length variables to monotonically increase
causing the VLA allocation in _ffs_func_bind() to grow larger and larger
at each bind/unbind cycle and eventually fail to allocate.

Fix this by clearing the ms_os_descs_ext_prop count & lengths to 0 in
ffs_data_reset().

Fixes: f0175ab519 ("usb: gadget: f_fs: OS descriptors support")
Cc: stable@vger.kernel.org
Signed-off-by: Udipto Goswami <ugoswami@codeaurora.org>
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
Reviewed-by: Manu Gautam <mgautam@codeaurora.org>
Link: https://lore.kernel.org/r/20200402044521.9312-1-sallenki@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-16 14:59:49 +02:00
Linus Torvalds
79f51b7b9c SCSI misc on 20200402
update changing all our txt files to rst ones.  Excluding that, we
 have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc,
 pm80xx, aacraid), a treewide update for scnprintf and some other minor
 updates.  The major core update is Hannes moving functions out of the
 aacraid driver and into the core.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXoYKiyYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishSasAP4iGwSB
 Y8tFaZgWadu76+wj5MdqTBoXdhnIuFF0rZG3pQEAiIKdsfQlbSFdm75+gUtx5hG/
 GOilX/pJczTRJDCGNis=
 =g7Sk
 -----END PGP SIGNATURE-----

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This series has a huge amount of churn because it pulls in Mauro's doc
  update changing all our txt files to rst ones.

  Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc,
  zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and
  some other minor updates.

  The major core change is Hannes moving functions out of the aacraid
  driver and into the core"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits)
  scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code
  scsi: ufs: Do not rely on prefetched data
  scsi: dc395x: remove dc395x_bios_param
  scsi: libiscsi: Fix error count for active session
  scsi: hpsa: correct race condition in offload enabled
  scsi: message: fusion: Replace zero-length array with flexible-array member
  scsi: qedi: Add PCI shutdown handler support
  scsi: qedi: Add MFW error recovery process
  scsi: ufs: Enable block layer runtime PM for well-known logical units
  scsi: ufs-qcom: Override devfreq parameters
  scsi: ufshcd: Let vendor override devfreq parameters
  scsi: ufshcd: Update the set frequency to devfreq
  scsi: ufs: Resume ufs host before accessing ufs device
  scsi: ufs-mediatek: customize the delay for enabling host
  scsi: ufs: make HCE polling more compact to improve initialization latency
  scsi: ufs: allow custom delay prior to host enabling
  scsi: ufs-mediatek: use common delay function
  scsi: ufs: introduce common and flexible delay function
  scsi: ufs: use an enum for host capabilities
  scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc()
  ...
2020-04-02 17:03:53 -07:00
Linus Torvalds
4b9fd8a829 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Continued user-access cleanups in the futex code.

   - percpu-rwsem rewrite that uses its own waitqueue and atomic_t
     instead of an embedded rwsem. This addresses a couple of
     weaknesses, but the primary motivation was complications on the -rt
     kernel.

   - Introduce raw lock nesting detection on lockdep
     (CONFIG_PROVE_RAW_LOCK_NESTING=y), document the raw_lock vs. normal
     lock differences. This too originates from -rt.

   - Reuse lockdep zapped chain_hlocks entries, to conserve RAM
     footprint on distro-ish kernels running into the "BUG:
     MAX_LOCKDEP_CHAIN_HLOCKS too low!" depletion of the lockdep
     chain-entries pool.

   - Misc cleanups, smaller fixes and enhancements - see the changelog
     for details"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
  fs/buffer: Make BH_Uptodate_Lock bit_spin_lock a regular spinlock_t
  thermal/x86_pkg_temp: Make pkg_temp_lock a raw_spinlock_t
  Documentation/locking/locktypes: Minor copy editor fixes
  Documentation/locking/locktypes: Further clarifications and wordsmithing
  m68knommu: Remove mm.h include from uaccess_no.h
  x86: get rid of user_atomic_cmpxchg_inatomic()
  generic arch_futex_atomic_op_inuser() doesn't need access_ok()
  x86: don't reload after cmpxchg in unsafe_atomic_op2() loop
  x86: convert arch_futex_atomic_op_inuser() to user_access_begin/user_access_end()
  objtool: whitelist __sanitizer_cov_trace_switch()
  [parisc, s390, sparc64] no need for access_ok() in futex handling
  sh: no need of access_ok() in arch_futex_atomic_op_inuser()
  futex: arch_futex_atomic_op_inuser() calling conventions change
  completion: Use lockdep_assert_RT_in_threaded_ctx() in complete_all()
  lockdep: Add posixtimer context tracing bits
  lockdep: Annotate irq_work
  lockdep: Add hrtimer context tracing bits
  lockdep: Introduce wait-type checks
  completion: Use simple wait queues
  sched/swait: Prepare usage in completions
  ...
2020-03-30 16:17:15 -07:00
Linus Torvalds
db34c5ffee USB / PHY patches for 5.7-rc1
Here are the big set of USB and PHY driver patches for 5.7-rc1.
 
 Nothing huge here, some new PHY drivers, loads of USB gadget fixes and
 updates, xhci updates, usb-serial driver updates and new device ids, and
 other minor things.  Full details in the shortlog.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXoHL9w8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymz6wCcDwDTZouXj+0B37q+kwlCQQPyLukAn2CxKfrM
 d+wScRHWoZutA8IdzqaU
 =5+jn
 -----END PGP SIGNATURE-----

Merge tag 'usb-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / PHY updates from Greg KH:
 "Here are the big set of USB and PHY driver patches for 5.7-rc1.

  Nothing huge here, some new PHY drivers, loads of USB gadget fixes and
  updates, xhci updates, usb-serial driver updates and new device ids,
  and other minor things. Full details in the shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'usb-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (239 commits)
  USB: cdc-acm: restore capability check order
  usb: cdns3: make signed 1 bit bitfields unsigned
  usb: gadget: fsl: remove unused variable 'driver_desc'
  usb: gadget: f_fs: Fix use after free issue as part of queue failure
  usb: typec: Correct the documentation for typec_cable_put()
  USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
  USB: serial: option: add Wistron Neweb D19Q1
  USB: serial: option: add BroadMobi BM806U
  USB: serial: option: add support for ASKEY WWHC050
  usb: core: Add ACPI support for USB interface devices
  driver core: platform: Reimplement devm_platform_ioremap_resource
  usb: dwc2: convert to devm_platform_get_and_ioremap_resource
  usb: host: hisilicon: convert to devm_platform_get_and_ioremap_resource
  usb: host: xhci-plat: convert to devm_platform_get_and_ioremap_resource
  drivers: provide devm_platform_get_and_ioremap_resource()
  phy: qcom-qusb2: Add new overriding tuning parameters in QUSB2 V2 PHY
  phy: qcom-qusb2: Add support for overriding tuning parameters in QUSB2 V2 PHY
  dt-bindings: phy: qcom-qusb2: Add support for overriding Phy tuning parameters
  phy: qcom-qusb2: Add generic QUSB2 V2 PHY support
  dt-bindings: phy: qcom,qusb2: Add compatibles for QUSB2 V2 phy and SC7180
  ...
2020-03-30 13:54:11 -07:00
Linus Torvalds
063d194224 media updates for v5.7-rc1
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAl6Bvm0ACgkQCF8+vY7k
 4RViMQ//baNJyAA8/Hpxz1w5+nL5hsTOhf2PcPgnCLkRVQnIiKMZoq7AS5KWtbqu
 im0SM6nWduGc2T/44Ew13YmBnuWMdXL9Gs8XtAkNakgSV1UM+A3pRuOWRYCyU3Ts
 1QDsc3N7oY9cvyJGWOlqdcA4gp4AaKxjS6M6Z18wYBk/jYSCcj4ZVecT89DYeeM7
 wFORkv/xSdgC3eoKWEwTyglzUmrXKrbfHdcNWrQBg+1SN3WrMYQWCL6nSYMqn0Vu
 f9L5E6jUSx9s6+apxS0OUQmDj78RM1JCEY1P8lgc3tAtVJ+X3yZbxwtpcvujhFPv
 c48NUQeyxAJc7evarvkd73Gwl4buujqHSgiRUovHwqUXHJuGZ3PBTryV9HzbmYYy
 EeHS/23t09F3j9zYtuoDNFIED03Mi+TNeS04cq8OIfwNl7xpUSEV0S/wd11V2308
 cfm6lsogGE9HRbaIxCHgx4AiGFVhbpK1OQt66iYze8r/wyxnN8MVOHGWw+eI4LRK
 9gwh7Wx37k6uCrjfOnLSgx7kcJ+mxSZEYyHJZqqtPm9H1SC68GOxhL/S3Zu7arvK
 eiwFfxJBiunCEfauOx28kaAdvBZVyEvYeDFYl/k+q4DCIGjvK0FXud6QRjNXv24S
 qUXYZKPUALTFOpbkQ3IQiBOQNM4NhF15RzCqRUptVnlF05MSywg=
 =Ve8R
 -----END PGP SIGNATURE-----

Merge tag 'media/v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - New sensor driver: imx219

 - Support for some new pixelformats

 - Support for Sun8i SoC

 - Added more codecs to meson vdec driver

 - Prepare for removing the legacy usbvision driver by moving it to
   staging. This driver has issues and use legacy core APIs. If nobody
   steps up to address those, it is time for its retirement.

 - Several cleanups and improvements on drivers, with the addition of
   new supported boards

* tag 'media/v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (236 commits)
  media: venus: firmware: Ignore secure call error on first resume
  media: mtk-vpu: load vpu firmware from the new location
  media: i2c: video-i2c: fix build errors due to 'imply hwmon'
  media: MAINTAINERS: add myself to co-maintain Hantro G1/G2 for i.MX8MQ
  media: hantro: add initial i.MX8MQ support
  media: dt-bindings: Document i.MX8MQ VPU bindings
  media: vivid: fix incorrect PA assignment to HDMI outputs
  media: hantro: Add linux-rockchip mailing list to MAINTAINERS
  media: cedrus: h264: Fix 4K decoding on H6
  media: siano: Use scnprintf() for avoiding potential buffer overflow
  media: rc: Use scnprintf() for avoiding potential buffer overflow
  media: allegro: create new struct for channel parameters
  media: allegro: move mail definitions to separate file
  media: allegro: pass buffers through firmware
  media: allegro: verify source and destination buffer in VCU response
  media: allegro: handle dependency of bitrate and bitrate_peak
  media: allegro: read bitrate mode directly from control
  media: allegro: make QP configurable
  media: allegro: make frame rate configurable
  media: allegro: skip filler data if possible
  ...
2020-03-30 13:42:05 -07:00
Sriharsha Allenki
f63ec55ff9 usb: gadget: f_fs: Fix use after free issue as part of queue failure
In AIO case, the request is freed up if ep_queue fails.
However, io_data->req still has the reference to this freed
request. In the case of this failure if there is aio_cancel
call on this io_data it will lead to an invalid dequeue
operation and a potential use after free issue.
Fix this by setting the io_data->req to NULL when the request
is freed as part of queue failure.

Fixes: 2e4c7553cd ("usb: gadget: f_fs: add aio support")
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
CC: stable <stable@vger.kernel.org>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20200326115620.12571-1-sallenki@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-26 15:05:44 +01:00
Thomas Gleixner
a5c6234e10 completion: Use simple wait queues
completion uses a wait_queue_head_t to enqueue waiters.

wait_queue_head_t contains a spinlock_t to protect the list of waiters
which excludes it from being used in truly atomic context on a PREEMPT_RT
enabled kernel.

The spinlock in the wait queue head cannot be replaced by a raw_spinlock
because:

  - wait queues can have custom wakeup callbacks, which acquire other
    spinlock_t locks and have potentially long execution times

  - wake_up() walks an unbounded number of list entries during the wake up
    and may wake an unbounded number of waiters.

For simplicity and performance reasons complete() should be usable on
PREEMPT_RT enabled kernels.

completions do not use custom wakeup callbacks and are usually single
waiter, except for a few corner cases.

Replace the wait queue in the completion with a simple wait queue (swait),
which uses a raw_spinlock_t for protecting the waiter list and therefore is
safe to use inside truly atomic regions on PREEMPT_RT.

There is no semantical or functional change:

  - completions use the exclusive wait mode which is what swait provides

  - complete() wakes one exclusive waiter

  - complete_all() wakes all waiters while holding the lock which protects
    the wait queue against newly incoming waiters. The conversion to swait
    preserves this behaviour.

complete_all() might cause unbound latencies with a large number of waiters
being woken at once, but most complete_all() usage sites are either in
testing or initialization code or have only a really small number of
concurrent waiters which for now does not cause a latency problem. Keep it
simple for now.

The fixup of the warning check in the USB gadget driver is just a straight
forward conversion of the lockless waiter check from one waitqueue type to
the other.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200321113242.317954042@linutronix.de
2020-03-21 16:00:24 +01:00
Bart Van Assche
a7afff31d5 scsi: treewide: Consolidate {get,put}_unaligned_[bl]e24() definitions
Move the get_unaligned_be24(), get_unaligned_le24() and
put_unaligned_le24() definitions from various drivers into
include/linux/unaligned/generic.h. Add a put_unaligned_be24()
implementation.

Link: https://lore.kernel.org/r/20200313203102.16613-4-bvanassche@acm.org
Cc: Keith Busch <kbusch@kernel.org>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Jens Axboe <axboe@fb.com>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> # For drivers/usb
Reviewed-by: Felipe Balbi <balbi@kernel.org> # For drivers/usb/gadget
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-16 22:08:34 -04:00
Hans Verkuil
0ceba55022 media: gadget: uvc: rename VFL_TYPE_GRABBER to _VIDEO
'GRABBER' is a weird name, all other types map to the /dev
device names. Rename to 'VIDEO' to be consistent with the
other types.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-24 16:52:45 +01:00
Greg Kroah-Hartman
24e6aea480 Merge 5.6-rc3 into usb-next
We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-24 08:48:49 +01:00
Gustavo A. R. Silva
b57a368efd usb: gadget: f_phonet: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertenly introduced[3] to the codebase from now on.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200211232303.GA21495@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-14 08:38:16 -08:00
Sergey Organov
e4bfded56c usb: gadget: serial: fix Tx stall after buffer overflow
Symptom: application opens /dev/ttyGS0 and starts sending (writing) to
it while either USB cable is not connected, or nobody listens on the
other side of the cable. If driver circular buffer overflows before
connection is established, no data will be written to the USB layer
until/unless /dev/ttyGS0 is closed and re-opened again by the
application (the latter besides having no means of being notified about
the event of establishing of the connection.)

Fix: on open and/or connect, kick Tx to flush circular buffer data to
USB layer.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-02-11 08:45:45 +02:00
Lars-Peter Clausen
43d565727a usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags
ffs_aio_cancel() can be called from both interrupt and thread context. Make
sure that the current IRQ state is saved and restored by using
spin_{un,}lock_irq{save,restore}().

Otherwise undefined behavior might occur.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-02-11 08:45:45 +02:00
John Keeping
904967c60d usb: gadget: u_audio: Fix high-speed max packet size
Prior to commit eb9fecb9e6 ("usb: gadget: f_uac2: split out audio
core") the maximum packet size was calculated only from the high-speed
descriptor but now we use the largest of the full-speed and high-speed
descriptors.

This is correct, but the full-speed value is likely to be higher than
that for high-speed and this leads to submitting requests for OUT
transfers (received by the gadget) which are larger than the endpoint's
maximum packet size.  These are rightly rejected by the gadget core.

config_ep_by_speed() already sets up the correct maximum packet size for
the enumerated speed in the usb_ep structure, so we can simply use this
instead of the overall value that has been used to allocate buffers for
requests.

Note that the minimum period for ALSA is still set from the largest
value, and this is unavoidable because it's possible to open the audio
device before the gadget has been enumerated.

Tested-by: Pavel Hofman  <pavel.hofman@ivitera.com>
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2020-02-11 08:45:45 +02:00
Colin Ian King
334fb94c39 usb: gadget: remove redundant assignment to variable status
Variable status is being assigned with a value that is never read, it is
assigned a new value immediately afterwards. The assignment is redundant
and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200208163132.29592-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-10 11:15:27 -08:00
Linus Torvalds
c9d35ee049 Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs file system parameter updates from Al Viro:
 "Saner fs_parser.c guts and data structures. The system-wide registry
  of syntax types (string/enum/int32/oct32/.../etc.) is gone and so is
  the horror switch() in fs_parse() that would have to grow another case
  every time something got added to that system-wide registry.

  New syntax types can be added by filesystems easily now, and their
  namespace is that of functions - not of system-wide enum members. IOW,
  they can be shared or kept private and if some turn out to be widely
  useful, we can make them common library helpers, etc., without having
  to do anything whatsoever to fs_parse() itself.

  And we already get that kind of requests - the thing that finally
  pushed me into doing that was "oh, and let's add one for timeouts -
  things like 15s or 2h". If some filesystem really wants that, let them
  do it. Without somebody having to play gatekeeper for the variants
  blessed by direct support in fs_parse(), TYVM.

  Quite a bit of boilerplate is gone. And IMO the data structures make a
  lot more sense now. -200LoC, while we are at it"

* 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (25 commits)
  tmpfs: switch to use of invalfc()
  cgroup1: switch to use of errorfc() et.al.
  procfs: switch to use of invalfc()
  hugetlbfs: switch to use of invalfc()
  cramfs: switch to use of errofc() et.al.
  gfs2: switch to use of errorfc() et.al.
  fuse: switch to use errorfc() et.al.
  ceph: use errorfc() and friends instead of spelling the prefix out
  prefix-handling analogues of errorf() and friends
  turn fs_param_is_... into functions
  fs_parse: handle optional arguments sanely
  fs_parse: fold fs_parameter_desc/fs_parameter_spec
  fs_parser: remove fs_parameter_description name field
  add prefix to fs_context->log
  ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log
  new primitive: __fs_parse()
  switch rbd and libceph to p_log-based primitives
  struct p_log, variants of warnf() et.al. taking that one instead
  teach logfc() to handle prefices, give it saner calling conventions
  get rid of cg_invalf()
  ...
2020-02-08 13:26:41 -08:00
Al Viro
d7167b1499 fs_parse: fold fs_parameter_desc/fs_parameter_spec
The former contains nothing but a pointer to an array of the latter...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-02-07 14:48:37 -05:00
Eric Sandeen
96cafb9ccb fs_parser: remove fs_parameter_description name field
Unused now.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-02-07 14:48:36 -05:00
Alexey Dobriyan
97a32539b9 proc: convert everything to "struct proc_ops"
The most notable change is DEFINE_SHOW_ATTRIBUTE macro split in
seq_file.h.

Conversion rule is:

	llseek		=> proc_lseek
	unlocked_ioctl	=> proc_ioctl

	xxx		=> proc_xxx

	delete ".owner = THIS_MODULE" line

[akpm@linux-foundation.org: fix drivers/isdn/capi/kcapi_proc.c]
[sfr@canb.auug.org.au: fix kernel/sched/psi.c]
  Link: http://lkml.kernel.org/r/20200122180545.36222f50@canb.auug.org.au
Link: http://lkml.kernel.org/r/20191225172546.GB13378@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-02-04 03:05:26 +00:00
Bryan O'Donoghue
d710562e01 usb: gadget: f_ecm: Use atomic_t to track in-flight request
Currently ecm->notify_req is used to flag when a request is in-flight.
ecm->notify_req is set to NULL and when a request completes it is
subsequently reset.

This is fundamentally buggy in that the unbind logic of the ECM driver will
unconditionally free ecm->notify_req leading to a NULL pointer dereference.

Fixes: da741b8c56 ("usb ethernet gadget: split CDC Ethernet function")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-15 10:40:22 +01:00
Bryan O'Donoghue
5b24c28cfe usb: gadget: f_ncm: Use atomic_t to track in-flight request
Currently ncm->notify_req is used to flag when a request is in-flight.
ncm->notify_req is set to NULL and when a request completes it is
subsequently reset.

This is fundamentally buggy in that the unbind logic of the NCM driver will
unconditionally free ncm->notify_req leading to a NULL pointer dereference.

Fixes: 40d133d7f5 ("usb: gadget: f_ncm: convert to new function interface with backward compatibility")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-15 10:40:16 +01:00
John Keeping
6b02af3465 usb: gadget: f_uac2: fix packet size calculation
The packet size for USB audio must always be a multiple of the frame
size, otherwise we are transmitting a partial frame which omits some
channels (and these end up at the wrong offset in the next packet).
Furthermore, it breaks the residue handling such that we end up trying
to send a packet exceeding the maximum packet size for the endpoint.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-15 10:39:23 +01:00
Peter Chen
d2450c6937 usb: gadget: f_fs: set req->num_sgs as 0 for non-sg transfer
The UDC core uses req->num_sgs to judge if scatter buffer list is used.
Eg: usb_gadget_map_request_by_dev. For f_fs sync io mode, the request
is re-used for each request, so if the 1st request->length > PAGE_SIZE,
and the 2nd request->length is <= PAGE_SIZE, the f_fs uses the 1st
req->num_sgs for the 2nd request, it causes the UDC core get the wrong
req->num_sgs value (The 2nd request doesn't use sg). For f_fs async
io mode, it is not harm to initialize req->num_sgs as 0 either, in case,
the UDC driver doesn't zeroed request structure.

Cc: Jun Li <jun.li@nxp.com>
Cc: stable <stable@vger.kernel.org>
Fixes: 772a7a724f ("usb: gadget: f_fs: Allow scatter-gather buffers")
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-15 10:39:22 +01:00
Takashi Iwai
fcc8469829 usb: gadget: u_audio: Drop superfluous ioctl PCM ops
PCM core deals the empty ioctl field now as default.
Let's kill the redundant lines.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210141822.18705-3-tiwai@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 16:24:12 +01:00
Takashi Iwai
d27ab1e609 usb: gadget: u_audio: Use managed buffer allocation
Clean up the driver with the new managed buffer allocation API.
The hw_params and hw_free callbacks became superfluous and dropped.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210141822.18705-2-tiwai@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 16:24:11 +01:00
Linus Torvalds
a1b85b3bf9 USB driver fixes for 5.5-rc2
Here are some small USB driver fixes for reported issues for 5.5-rc2
 
 There's the usual gadget and xhci fixes, as well as some other problems
 that syzbot has been finding during it's fuzzing runs.  Full details are
 in the shortlog.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXfT++A8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+yminwCgyTXywlBkMdzz22vA9g12euh2LlEAnRyLI6DQ
 Jk4FJOtW87JIYSSRjAhh
 =3prZ
 -----END PGP SIGNATURE-----

Merge tag 'usb-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB driver fixes for reported issues for 5.5-rc2

  There's the usual gadget and xhci fixes, as well as some other
  problems that syzbot has been finding during it's fuzzing runs. Full
  details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'usb-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (21 commits)
  usb: dwc3: pci: add ID for the Intel Comet Lake -H variant
  xhci: make sure interrupts are restored to correct state
  xhci: handle some XHCI_TRUST_TX_LENGTH quirks cases as default behaviour.
  xhci: Increase STS_HALT timeout in xhci_suspend()
  usb: xhci: only set D3hot for pci device
  xhci: fix USB3 device initiated resume race with roothub autosuspend
  xhci: Fix memory leak in xhci_add_in_port()
  USB: Fix incorrect DMA allocations for local memory pool drivers
  usb: gadget: fix wrong endpoint desc
  usb: dwc3: ep0: Clear started flag on completion
  usb: dwc3: gadget: Clear started flag for non-IOC
  usb: dwc3: gadget: Fix logical condition
  USB: atm: ueagle-atm: add missing endpoint check
  USB: adutux: fix interface sanity check
  USB: idmouse: fix interface sanity checks
  USB: serial: io_edgeport: fix epic endpoint lookup
  usb: mon: Fix a deadlock in usbmon between mmap and read
  usb: common: usb-conn-gpio: Don't log an error on probe deferral
  usb: core: urb: fix URB structure initialization function
  usb: typec: fix use after free in typec_register_port()
  ...
2019-12-14 12:40:39 -08:00
EJ Hsu
e5b5da96da usb: gadget: fix wrong endpoint desc
Gadget driver should always use config_ep_by_speed() to initialize
usb_ep struct according to usb device's operating speed. Otherwise,
usb_ep struct may be wrong if usb devcie's operating speed is changed.

The key point in this patch is that we want to make sure the desc pointer
in usb_ep struct will be set to NULL when gadget is disconnected.
This will force it to call config_ep_by_speed() to correctly initialize
usb_ep struct based on the new operating speed when gadget is
re-connected later.

Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: EJ Hsu <ejh@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
2019-12-10 14:56:10 +02:00
Pankaj Bharadiya
c593642c8b treewide: Use sizeof_field() macro
Replace all the occurrences of FIELD_SIZEOF() with sizeof_field() except
at places where these are defined. Later patches will remove the unused
definition of FIELD_SIZEOF().

This patch is generated using following script:

EXCLUDE_FILES="include/linux/stddef.h|include/linux/kernel.h"

git grep -l -e "\bFIELD_SIZEOF\b" | while read file;
do

	if [[ "$file" =~ $EXCLUDE_FILES ]]; then
		continue
	fi
	sed -i  -e 's/\bFIELD_SIZEOF\b/sizeof_field/g' $file;
done

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Link: https://lore.kernel.org/r/20190924105839.110713-3-pankaj.laxminarayan.bharadiya@intel.com
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: David Miller <davem@davemloft.net> # for net
2019-12-09 10:36:44 -08:00
Linus Torvalds
0da522107e compat_ioctl: remove most of fs/compat_ioctl.c
As part of the cleanup of some remaining y2038 issues, I came to
 fs/compat_ioctl.c, which still has a couple of commands that need support
 for time64_t.
 
 In completely unrelated work, I spent time on cleaning up parts of this
 file in the past, moving things out into drivers instead.
 
 After Al Viro reviewed an earlier version of this series and did a lot
 more of that cleanup, I decided to try to completely eliminate the rest
 of it and move it all into drivers.
 
 This series incorporates some of Al's work and many patches of my own,
 but in the end stops short of actually removing the last part, which is
 the scsi ioctl handlers. I have patches for those as well, but they need
 more testing or possibly a rewrite.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJdsHCdAAoJEJpsee/mABjZtYkP/1JGl3jFv3Iq/5BCdPkaePP1
 RtMJRNfURgK3GeuHUui330PvVjI/pLWXU/VXMK2MPTASpJLzYz3uCaZrpVWEMpDZ
 +ImzGmgJkITlW1uWU3zOcQhOxTyb1hCZ0Ci+2xn9QAmyOL7prXoXCXDWv3h6iyiF
 lwG+nW+HNtyx41YG+9bRfKNoG0ZJ+nkJ70BV6u0acQHXWn7Xuupa9YUmBL87hxAL
 6dlJfLTJg6q8QSv/Q6LxslfWk2Ti8OOJZOwtFM5R8Bgl0iUcvshiRCKfv/3t9jXD
 dJNvF1uq8z+gracWK49Qsfq5dnZ2ZxHFUo9u0NjbCrxNvWH/sdvhbaUBuJI75seH
 VIznCkdxFhrqitJJ8KmxANxG08u+9zSKjSlxG2SmlA4qFx/AoStoHwQXcogJscNb
 YIXYKmWBvwPzYu09QFAXdHFPmZvp/3HhMWU6o92lvDhsDwzkSGt3XKhCJea4DCaT
 m+oCcoACqSWhMwdbJOEFofSub4bY43s5iaYuKes+c8O261/Dwg6v/pgIVez9mxXm
 TBnvCsotq5m8wbwzv99eFqGeJH8zpDHrXxEtRR5KQqMqjLq/OQVaEzmpHZTEuK7n
 e/V/PAKo2/V63g4k6GApQXDxnjwT+m0aWToWoeEzPYXS6KmtWC91r4bWtslu3rdl
 bN65armTm7bFFR32Avnu
 =lgCl
 -----END PGP SIGNATURE-----

Merge tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground

Pull removal of most of fs/compat_ioctl.c from Arnd Bergmann:
 "As part of the cleanup of some remaining y2038 issues, I came to
  fs/compat_ioctl.c, which still has a couple of commands that need
  support for time64_t.

  In completely unrelated work, I spent time on cleaning up parts of
  this file in the past, moving things out into drivers instead.

  After Al Viro reviewed an earlier version of this series and did a lot
  more of that cleanup, I decided to try to completely eliminate the
  rest of it and move it all into drivers.

  This series incorporates some of Al's work and many patches of my own,
  but in the end stops short of actually removing the last part, which
  is the scsi ioctl handlers. I have patches for those as well, but they
  need more testing or possibly a rewrite"

* tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (42 commits)
  scsi: sd: enable compat ioctls for sed-opal
  pktcdvd: add compat_ioctl handler
  compat_ioctl: move SG_GET_REQUEST_TABLE handling
  compat_ioctl: ppp: move simple commands into ppp_generic.c
  compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t
  compat_ioctl: move PPPIOCSCOMPRESS to ppp_generic
  compat_ioctl: unify copy-in of ppp filters
  tty: handle compat PPP ioctls
  compat_ioctl: move SIOCOUTQ out of compat_ioctl.c
  compat_ioctl: handle SIOCOUTQNSD
  af_unix: add compat_ioctl support
  compat_ioctl: reimplement SG_IO handling
  compat_ioctl: move WDIOC handling into wdt drivers
  fs: compat_ioctl: move FITRIM emulation into file systems
  gfs2: add compat_ioctl support
  compat_ioctl: remove unused convert_in_user macro
  compat_ioctl: remove last RAID handling code
  compat_ioctl: remove /dev/raw ioctl translation
  compat_ioctl: remove PCI ioctl translation
  compat_ioctl: remove joystick ioctl translation
  ...
2019-12-01 13:46:15 -08:00
Linus Torvalds
59274c7164 USB patches for 5.5-rc1
Here is the big set of USB patches for 5.5-rc1
 
 Lots of little things in here:
   - typec updates and additions
   - usb-serial drivers cleanups and fixes
   - misc USB drivers cleanups and fixes
   - gadget drivers new features and controllers added
   - usual xhci additions
   - other minor changes
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXd5+Iw8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ylA4wCbB3P206oHeHLBe9Eika3D8gM9/fMAn2oWlmpB
 Xh7wr30FGC02zU/KBpJ1
 =U5qC
 -----END PGP SIGNATURE-----

Merge tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here is the big set of USB patches for 5.5-rc1

  Lots of little things in here:
   - typec updates and additions
   - usb-serial drivers cleanups and fixes
   - misc USB drivers cleanups and fixes
   - gadget drivers new features and controllers added
   - usual xhci additions
   - other minor changes

  All of these have been in linux-next with no reported issues"

* tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (223 commits)
  usb: gadget: udc: gr_udc: create debugfs directory under usb root
  usb: gadget: atmel: create debugfs directory under usb root
  usb: musb: create debugfs directory under usb root
  usb: serial: Fix Kconfig indentation
  usb: misc: Fix Kconfig indentation
  usb: gadget: Fix Kconfig indentation
  usb: host: Fix Kconfig indentation
  usb: dwc3: Fix Kconfig indentation
  usb: gadget: configfs: Fix missing spin_lock_init()
  usb-storage: Disable UAS on JMicron SATA enclosure
  USB: documentation: flags on usb-storage versus UAS
  USB: uas: heed CAPACITY_HEURISTICS
  USB: uas: honor flag to avoid CAPACITY16
  usb: host: xhci-tegra: Correct phy enable sequence
  usb-serial: cp201x: support Mark-10 digital force gauge
  usb: chipidea: imx: pinctrl for HSIC is optional
  usb: chipidea: imx: refine the error handling for hsic
  usb: chipidea: imx: change hsic power regulator as optional
  usb: chipidea: imx: check data->usbmisc_data against NULL before access
  usb: chipidea: core: change vbus-regulator as optional
  ...
2019-11-27 10:46:34 -08:00
Takashi Iwai
67b2945d63 usb: gadget: u_audio: Remove superfluous snd_dma_continuous_data()
The recent change (commit 08422d2c55: "ALSA: memalloc: Allow NULL
device for SNDRV_DMA_TYPE_CONTINUOUS type") made the PCM preallocation
helper accepting NULL as the device pointer for the default usage.
Drop the snd_dma_continuous_data() usage that became superfluous from
the callers.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20191108164214.611-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-09 18:04:18 +01:00
Arnd Bergmann
01b8bca81e compat_ioctl: use correct compat_ptr() translation in drivers
A handful of drivers all have a trivial wrapper around their ioctl
handler, but don't call the compat_ptr() conversion function at the
moment. In practice this does not matter, since none of them are used
on the s390 architecture and for all other architectures, compat_ptr()
does not do anything, but using the new compat_ptr_ioctl()
helper makes it more correct in theory, and simplifies the code.

I checked that all ioctl handlers in these files are compatible
and take either pointer arguments or no argument.

Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-10-23 17:23:44 +02:00
Jayshri Pawar
0b8b1a1fed usb: gadget: f_tcm: Provide support to get alternate setting in tcm function
Providing tcm_get_alt in tcm function to support Bulk only protocol and
USB Attached SCSI protocol

Signed-off-by: Jayshri Pawar <jpawar@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:37:29 +03:00
Michał Mirosław
c6561082b8 usb: gadget: u_serial: use mutex for serialising open()s
Remove home-made waiting mechanism from gs_open() and rely on
portmaster's mutex to do the job.

Note: This releases thread waiting on close() when another thread
open()s simultaneously.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:20 +03:00
Michał Mirosław
ef9b457d0d usb: gadget: u_serial: diagnose missed console messages
Insert markers in console stream marking places where data
is missing. This makes the hole in the data stand out clearly
instead of glueing together unrelated messages.

Example output as seen from USB host side:

[    0.064078] pinctrl core: registered pin 16 (UART3_RTS_N PC0) on 70000868.pinmux
[    0.064130] pinctrl
[missed 114987 bytes]
[    4.302299] udevd[134]: starting version 3.2.5
[    4.306845] random: udevd: uninitialized urandom read (16 bytes read)

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:17 +03:00
Michał Mirosław
d7cb8fb7aa usb: gadget: u_serial: allow more console gadget ports
Allow configuring more than one console using USB serial or ACM gadget.

By default, only first (ttyGS0) is a console, but this may be changed
using function's new "console" attribute.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:12 +03:00
Michał Mirosław
b417343c6a usb: gadget: u_serial: make OBEX port not a console
Prevent OBEX serial port from ever becoming a console. Console messages
will definitely break the protocol, and since you have to instantiate
the port making it explicitly for OBEX, there is no point in allowing
console to break it by mistake.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:09 +03:00
Michał Mirosław
fe1ea63ad8 usb: gadget: u_serial: reimplement console support
Rewrite console support to fix a few shortcomings of the old code
preventing its use with multiple ports. This removes some duplicated
code and replaces a custom kthread with simpler workqueue item.

Only port ttyGS0 gets to be a console for now.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:06 +03:00
Michał Mirosław
daf82bd24e usb: gadget: u_serial: add missing port entry locking
gserial_alloc_line() misses locking (for a release barrier) while
resetting port entry on TTY allocation failure. Fix this.

Cc: stable@vger.kernel.org
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-10-22 10:27:04 +03:00
David Howells
dec90f61f1 vfs: Convert functionfs to use the new mount API
Convert the functionfs filesystem to the new internal mount API as the old
one will be obsoleted and removed.  This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.

See Documentation/filesystems/mount_api.txt for more information.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
cc: linux-usb@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-09-18 22:35:43 -04:00
Benjamin Herrenschmidt
4a56a478a5 usb: gadget: mass_storage: Fix races between fsg_disable and fsg_set_alt
If fsg_disable() and fsg_set_alt() are called too closely to each
other (for example due to a quick reset/reconnect), what can happen
is that fsg_set_alt sets common->new_fsg from an interrupt while
handle_exception is trying to process the config change caused by
fsg_disable():

	fsg_disable()
	...
	handle_exception()
		sets state back to FSG_STATE_NORMAL
		hasn't yet called do_set_interface()
		or is inside it.

 ---> interrupt
	fsg_set_alt
		sets common->new_fsg
		queues a new FSG_STATE_CONFIG_CHANGE
 <---

Now, the first handle_exception can "see" the updated
new_fsg, treats it as if it was a fsg_set_alt() response,
call usb_composite_setup_continue() etc...

But then, the thread sees the second FSG_STATE_CONFIG_CHANGE,
and goes back down the same path, wipes and reattaches a now
active fsg, and .. calls usb_composite_setup_continue() which
at this point is wrong.

Not only we get a backtrace, but I suspect the second set_interface
wrecks some state causing the host to get upset in my case.

This fixes it by replacing "new_fsg" by a "state argument" (same
principle) which is set in the same lock section as the state
update, and retrieved similarly.

That way, there is never any discrepancy between the dequeued
state and the observed value of it. We keep the ability to have
the latest reconfig operation take precedence, but we guarantee
that once "dequeued" the argument (new_fsg) will not be clobbered
by any new event.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-12 08:55:24 +03:00
Linus Torvalds
17a20acaf1 USB / PHY patches for 5.3-rc1
Here is the big USB and PHY driver pull request for 5.3-rc1.
 
 Lots of stuff here, all of which has been in linux-next for a while with
 no reported issues.  Nothing is earth-shattering, just constant forward
 progress for more devices supported and cleanups and small fixes:
   - USB gadget driver updates and fixes
   - new USB gadget driver for some hardware, followed by a quick revert
     of those patches as they were not ready to be merged...
   - PHY driver updates
   - Lots of new driver additions and cleanups with a few fixes mixed in.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXSXjYA8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ynMYACgnSRP3GylwMywrkc9paVmDeiIgNwAn0N2sika
 JEW7C3lkBJZJ7R6V/Ynm
 =drla
 -----END PGP SIGNATURE-----

Merge tag 'usb-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / PHY updates from Greg KH:
 "Here is the big USB and PHY driver pull request for 5.3-rc1.

  Lots of stuff here, all of which has been in linux-next for a while
  with no reported issues. Nothing is earth-shattering, just constant
  forward progress for more devices supported and cleanups and small
  fixes:

   - USB gadget driver updates and fixes

   - new USB gadget driver for some hardware, followed by a quick revert
     of those patches as they were not ready to be merged...

   - PHY driver updates

   - Lots of new driver additions and cleanups with a few fixes mixed
     in"

* tag 'usb-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (145 commits)
  Revert "usb: gadget: storage: Remove warning message"
  Revert "dt-bindings: add binding for USBSS-DRD controller."
  Revert "usb:gadget Separated decoding functions from dwc3 driver."
  Revert "usb:gadget Patch simplify usb_decode_set_clear_feature function."
  Revert "usb:gadget Simplify usb_decode_get_set_descriptor function."
  Revert "usb:cdns3 Add Cadence USB3 DRD Driver"
  Revert "usb:cdns3 Fix for stuck packets in on-chip OUT buffer."
  usb :fsl: Change string format for errata property
  usb: host: Stops USB controller init if PLL fails to lock
  usb: linux/fsl_device: Add platform member has_fsl_erratum_a006918
  usb: phy: Workaround for USB erratum-A005728
  usb: fsl: Set USB_EN bit to select ULPI phy
  usb: Handle USB3 remote wakeup for LPM enabled devices correctly
  drivers/usb/typec/tps6598x.c: fix 4CC cmd write
  drivers/usb/typec/tps6598x.c: fix portinfo width
  usb: storage: scsiglue: Do not skip VPD if try_vpd_pages is set
  usb: renesas_usbhs: add a workaround for a race condition of workqueue
  usb: gadget: udc: renesas_usb3: remove redundant assignment to ret
  usb: dwc2: use a longer AHB idle timeout in dwc2_core_reset()
  USB: gadget: function: fix issue Unneeded variable: "value"
  ...
2019-07-11 15:40:06 -07:00
Greg Kroah-Hartman
214cc39d17 Revert "usb: gadget: storage: Remove warning message"
This reverts commit e70b3f5da0.

EJ writes:
	Thinh found this patch might cause a failure in USB CV TD 9.13
	Set Configuration Test. We are trying to fix it.  Could you
	please defer the merging of this patch until we fix it?

So am now dropping it.

Reported-by: EJ Hsu <ejh@nvidia.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-04 13:05:59 +02:00
Greg Kroah-Hartman
51785bddeb USB: more changes for v5.3 merge window
Turns out a few more important changes came about. We have the new
 Cadence DRD Driver being added here and that's the biggest, most
 important part.
 
 Together with that we have suport for new imx7ulp phy. Support for
 TigerLake Devices on dwc3. Also a couple important fixes which weren't
 completed in time for the -rc cycle.
 
 Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQJRBAABCAA7FiEElLzh7wn96CXwjh2IzL64meEamQYFAl0cYrQdHGZlbGlwZS5i
 YWxiaUBsaW51eC5pbnRlbC5jb20ACgkQzL64meEamQbtBA//YkcCylzV48BqIzY2
 zjdrBwmanARolMErIFja2Ace0ChHDEHb5sZzHO4yZy58M8PR3p8rmhjk48cA3J0o
 GNC8aZnEbdOSiw0uEa1EXkxrsqIpTnkXpFruIPxnyVEk5fxUEtUa+6IdSspXXS3b
 iiOS3q5rgue+zepRyZ844b23pl41hbeZZDhgMVLW0KWzXQI3AEdh3ACpSqxPKpx8
 oNtfJIKTCibfbbUen1urHuu5h85IcVWzTSuaQbUzSzx9xcQmEKDGVGPaPR+q6Xp7
 mYxPGduEcfKiXGSolx4L/gpWHzB99XvGZm/eRDCONfMi+6F6Qh3WAkK2xen0kHb+
 LcMRVA7ti++fmspjB5v1wy0CZ0RuHlPexk9iaNc+P4J/B9GollCJBhloUKjPSSnq
 MMIbiiYXyxjFZMidd9nEqmCjeBKRGeE+yF4d9bZKFrgpEyE0X+dnHck+xNwm15uu
 3aHrBVC2UsB3QEQx9LbmuMfYU0RPW8IXVnbCVH1n0HM4tJJtHgmLJ38REil19Ydm
 9zQ6TiUlfHnWX1Ib6YS+z/nX5hxdA7/rAuFrLUPjVGt0qcP82X9075CVEZvBWO9m
 TL5eB8u383O0qYgUNyQCYKnHFups8kd6tOvaR+w5B+dw8Qm8mnNsh8Oz4IYEFbmd
 fiNAlnHe9e2WNtddv5s7M8SrgKk=
 =ciUl
 -----END PGP SIGNATURE-----

Merge tag 'usb-for-v5.3-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

USB: more changes for v5.3 merge window

Turns out a few more important changes came about. We have the new
Cadence DRD Driver being added here and that's the biggest, most
important part.

Together with that we have suport for new imx7ulp phy. Support for
TigerLake Devices on dwc3. Also a couple important fixes which weren't
completed in time for the -rc cycle.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

* tag 'usb-for-v5.3-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb:
  usb: renesas_usbhs: add a workaround for a race condition of workqueue
  usb: gadget: udc: renesas_usb3: remove redundant assignment to ret
  usb: dwc2: use a longer AHB idle timeout in dwc2_core_reset()
  USB: gadget: function: fix issue Unneeded variable: "value"
  usb: phy: phy-mxs-usb: add imx7ulp support
  doc: dt-binding: mxs-usb-phy: add compatible for 7ulp
  usb:cdns3 Fix for stuck packets in on-chip OUT buffer.
  usb:cdns3 Add Cadence USB3 DRD Driver
  usb:gadget Simplify usb_decode_get_set_descriptor function.
  usb:gadget Patch simplify usb_decode_set_clear_feature function.
  usb:gadget Separated decoding functions from dwc3 driver.
  dt-bindings: add binding for USBSS-DRD controller.
  usb: dwc3: pci: add support for TigerLake Devices
2019-07-03 13:48:54 +02:00
Hariprasad Kelam
d2d06c18d7 USB: gadget: function: fix issue Unneeded variable: "value"
fix below issue reported by coccicheck
drivers/usb/gadget/function/f_eem.c:169:7-12: Unneeded variable:
"value". Return "- EOPNOTSUPP" on line 179

We can not change return type of eem_setup as its registered with callback
function

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-07-03 10:58:44 +03:00