Commit graph

166 commits

Author SHA1 Message Date
Johan Hovold
d6124b409c uwb: fix device reference leaks
This subsystem consistently fails to drop the device reference taken by
class_find_device().

Note that some of these lookup functions already take a reference to the
returned data, while others claim no reference is needed (or does not
seem need one).

Fixes: 183b9b592a ("uwb: add the UWB stack (core files)")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-01 09:04:04 -06:00
Wolfram Sang
c6a4c9fcfd uwb: hwa-rc: don't print error when allocating urb fails
kmalloc will print enough information in case of failure.

Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-15 15:52:40 +02:00
Jiri Kosina
ced08b020e uwb: uwbd() is not freezable kthread
uwbd() calls try_to_freeze(), but the thread doesn't mark itself freezable
through set_freezable(), so the try_to_freeze() call is useless.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-01 14:26:33 -08:00
Linus Torvalds
e880e87488 driver core update for 4.4-rc1
Here's the "big" driver core updates for 4.4-rc1.  Primarily a bunch of
 debugfs updates, with a smattering of minor driver core fixes and
 updates as well.
 
 All have been in linux-next for a long time.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlY6ePQACgkQMUfUDdst+ymNTgCgpP0CZw57GpwF/Hp2L/lMkVeo
 Kx8AoKhEi4iqD5fdCQS9qTfomB+2/M6g
 =g7ZO
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here's the "big" driver core updates for 4.4-rc1.  Primarily a bunch
  of debugfs updates, with a smattering of minor driver core fixes and
  updates as well.

  All have been in linux-next for a long time"

* tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  debugfs: Add debugfs_create_ulong()
  of: to support binding numa node to specified device in devicetree
  debugfs: Add read-only/write-only bool file ops
  debugfs: Add read-only/write-only size_t file ops
  debugfs: Add read-only/write-only x64 file ops
  debugfs: Consolidate file mode checks in debugfs_create_*()
  Revert "mm: Check if section present during memory block (un)registering"
  driver-core: platform: Provide helpers for multi-driver modules
  mm: Check if section present during memory block (un)registering
  devres: fix a for loop bounds check
  CMA: fix CONFIG_CMA_SIZE_MBYTES overflow in 64bit
  base/platform: assert that dev_pm_domain callbacks are called unconditionally
  sysfs: correctly handle short reads on PREALLOC attrs.
  base: soc: siplify ida usage
  kobject: move EXPORT_SYMBOL() macros next to corresponding definitions
  kobject: explain what kobject's sd field is
  debugfs: document that debugfs_remove*() accepts NULL and error values
  debugfs: Pass bool pointer to debugfs_create_bool()
  ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
2015-11-04 21:50:37 -08:00
Muhammad Falak R Wani
cf0d5fbd55 uwb: drp: Use setup_timer
Use timer API function setup_timer instead of init_timer to
initialize a kernel timer.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:52:53 -07:00
Muhammad Falak R Wani
b9ca0c948c uwb: neh: Use setup_timer
Use timer API function setup_timer instead of init_timer to
initialize the timer.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:52:53 -07:00
Muhammad Falak R Wani
a895dc0509 uwb: rsv: Use setup_timer
Use timer API function setup_timer instead of init_timer to
initialize the timer.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:52:53 -07:00
Viresh Kumar
621a5f7ad9 debugfs: Pass bool pointer to debugfs_create_bool()
Its a bit odd that debugfs_create_bool() takes 'u32 *' as an argument,
when all it needs is a boolean pointer.

It would be better to update this API to make it accept 'bool *'
instead, as that will make it more consistent and often more convenient.
Over that bool takes just a byte.

That required updates to all user sites as well, in the same commit
updating the API. regmap core was also using
debugfs_{read|write}_file_bool(), directly and variable types were
updated for that to be bool as well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04 11:36:07 +01:00
Lars-Peter Clausen
c5b68807c6 uwb: Remove umc bus legacy suspend/resume support
There are currently no umc drivers implementing suspend/resume, so remove
the legacy suspend/resume support from the framework. If a umc driver ever
wants to implement suspend/resume they can use dev_pm_ops, which works out
of the box without any additional support necessary from the bus itself.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18 17:27:03 +01:00
Markus Elfring
b29582b15f uwb/whci: Delete an unnecessary check before the function call "umc_device_unregister"
The umc_device_unregister() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18 16:56:40 +01:00
Linus Torvalds
e29876723f USB patches for 3.20-rc1
Here's the big pull request for the USB driver tree for 3.20-rc1.
 
 Nothing major happening here, just lots of gadget driver updates, new
 device ids, and a bunch of cleanups.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlTgtrcACgkQMUfUDdst+yn0tACgygJPNvu1l3ukNJCCpWuOErIj
 3KsAnjiEXv90DLYJiVLJ4EbLPw0V9wAv
 =DrJx
 -----END PGP SIGNATURE-----

Merge tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg KH:
 "Here's the big pull request for the USB driver tree for 3.20-rc1.

  Nothing major happening here, just lots of gadget driver updates, new
  device ids, and a bunch of cleanups.

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

* tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (299 commits)
  usb: musb: fix device hotplug behind hub
  usb: dwc2: Fix a bug in reading the endpoint directions from reg.
  staging: emxx_udc: fix the build error
  usb: Retry port status check on resume to work around RH bugs
  Revert "usb: Reset USB-3 devices on USB-3 link bounce"
  uhci-hub: use HUB_CHAR_*
  usb: kconfig: replace PPC_OF with PPC
  ehci-pci: disable for Intel MID platforms (update)
  usb: gadget: Kconfig: use bool instead of boolean
  usb: musb: blackfin: remove incorrect __exit_p()
  USB: fix use-after-free bug in usb_hcd_unlink_urb()
  ehci-pci: disable for Intel MID platforms
  usb: host: pci_quirks: joing string literals
  USB: add flag for HCDs that can't receive wakeup requests (isp1760-hcd)
  USB: usbfs: allow URBs to be reaped after disconnection
  cdc-acm: kill unnecessary messages
  cdc-acm: add sanity checks
  usb: phy: phy-generic: Fix USB PHY gpio reset
  usb: dwc2: fix USB core dependencies
  usb: renesas_usbhs: fix NULL pointer dereference in dma_release_channel()
  ...
2015-02-15 10:24:55 -08:00
Tejun Heo
125918dbd8 usb: use %*pb[l] to print bitmaps including cpumasks and nodemasks
printk and friends can now format bitmaps using '%*pb[l]'.  cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.

* drivers/uwb/drp.c::uwb_drp_handle_alien_drp() was formatting mas.bm
  into a buffer but never used it.  Removed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:38 -08:00
Rickard Strandqvist
3eb598ded1 uwb: lc-dev: Remove unused function
Remove the function uwb_dev_addr_bcast() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25 20:48:28 +08:00
Geert Uytterhoeven
d9c3ae28bd uwb: Remove bogus colon after newline from debug message
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03 15:45:04 -08:00
Thomas Pugliese
d08e1ad994 uwb: add an ASIE sysfs attribute to uwb_rc devices
Allow user mode to add and remove application specific information
elements (ASIEs) to the beacon of a uwb_rc device.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 22:05:26 -07:00
Thomas Pugliese
848879340a uwb: create a uwb bus type and add in-range peer devices to it
Documentation/usb/WUSB-Design-overview.txt states that UWB devices seen
by a UWB radio controller are added to /sys/bus/uwb/devices, but this
was not actually being done.  This functionality is needed in order for
UWB peer devices to be enumerated by user mode tools.  This patch
creates a uwb bus type and adds UWB peer devices to it as they are
discovered by the radio controller.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 22:04:44 -07:00
Thomas Pugliese
58e4ab3eb0 uwb: remove UWB build dependency on PCI
UWB does not require PCI to be enabled so remove build dependency.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 22:04:44 -07:00
Thomas Pugliese
e53582bbb5 uwb: update uwb device prints to be more useful
Print info about the radio controller device instead of the its parent
when UWB devices connect and disconnect.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 22:04:44 -07:00
Thomas Pugliese
9282502044 uwb: line length cleanup
Fix line length in uwb-internal.h

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 22:03:54 -07:00
Thomas Pugliese
675f0ab2fe uwb: init beacon cache entry before registering uwb device
Make sure the uwb_dev->bce entry is set before calling uwb_dev_add in
uwbd_dev_onair so that usermode will only see the device after it is
properly initialized.  This fixes a kernel panic that can occur if
usermode tries to access the IEs sysfs attribute of a UWB device before
the driver has had a chance to set the beacon cache entry.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 16:03:21 -07:00
Julia Lawall
3dbef993c0 uwb/whci: use correct structure type name in sizeof
Correct typo in the name of the type given to sizeof.  Because it is the
size of a pointer that is wanted, the typo has no impact on compilation or
execution.

This problem was found using Coccinelle (http://coccinelle.lip6.fr/).  The
semantic patch used can be found in message 0 of this patch series.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-08-01 15:48:08 -07:00
Thomas Pugliese
c6a64de08e uwb: fix variable set but not used warnings
Fix variable set but not used warnings in UWB.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:18:48 -07:00
Thomas Pugliese
992801645b uwb: comment typo fix
Comment typo fix.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:18:48 -07:00
Thomas Pugliese
d339a1f2ff uwb: whitespace and line length cleanups
Fix whitespace and line length issues reported by checkpatch.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:18:48 -07:00
Thomas Pugliese
7b360ee09a uwb: add error messages when reservation establish fails
Add better error messages during the channel change/reservation establish
process.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:56:54 -07:00
Thomas Pugliese
90ec00d54e uwb: fix channel change failure
Make the transition to the UWB_RSV_STATE_NONE state synchronous so that
there is not a race between uwb_rsv_terminate and uwb_rsv_establish.
uwb_rsv_terminate would set the rsv->state to UWB_RSV_STATE_NONE but did
not release the stream resource until a 320ms timeout had expired.  If a
user called uwb_rsv_establish during that time, it could fail to
establish the reservation because no stream resources were available.
This patch removes the timer from the uwb_rsv_terminate process since it
is not needed when transitioning to UWB_RSV_STATE_NONE.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:56:54 -07:00
Thomas Pugliese
c996b93791 uwb: don't call spin_unlock_irq in a USB completion handler
This patch converts the use of spin_lock_irq/spin_unlock_irq to
spin_lock_irqsave/spin_unlock_irqrestore in uwb_rc_set_drp_cmd_done
which is called from a USB completion handler.  There are also
whitespace cleanups to make checkpatch.pl happy.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-24 12:45:40 -07:00
Daeseok Youn
f7a8719560 uwb: adds missing error handling
There is checking NULL before dereferncing but
it need to add "return".

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-16 14:03:40 -07:00
Thomas Pugliese
1fc671b3be uwb: move mutex_lock to error case in uwbd_evt_handle_rc_bp_slot_change
Only acquire rc->uwb_dev.mutex in the error case in
uwbd_evt_handle_rc_bp_slot_change.  This fixes a bug where establishing
a reservation on a new channel will fail if we were unable to establish
a reservation on the previous channel due to DRP conflict.

If rc->uwb_dev.mutex is acquired in the non-error case when the uwb
system is attempting to start beaconing, it will block because the start
beaconing code is holding this mutex.  This prevents any other
notifications from the URC from being processed.  In particular, the
DRP_AVAILABILITY notification will not be processed during the start
beaconing process which can result in a failure to establish a
reservation.  It is safe to not hold the mutex in the non-error
case since the only other place rc->uwb_dev.beacon_slot is accessed is
in the same worker thread that uwbd_evt_handle_rc_bp_slot_change
executes in.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20 12:19:44 -08:00
Thomas Pugliese
bf359dff23 uwb: use uwb_rsv_callback instead of calling rsv->callback directly
Use uwb_rsv_callback wrapper instead of calling rsv->callback directly.
uwb_rsv_callback checks for NULL and is used by other callers of the
callback routine.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20 12:19:13 -08:00
Thomas Pugliese
67d0fb2592 uwb: whitespace and comment cleanups
various whitespace and comment cleanups

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20 12:19:13 -08:00
Thomas Pugliese
f79833a7ab uwb: add debug prints during channel change and beacon actions
Add debug prints during channel change and beacon actions.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20 12:19:13 -08:00
Levente Kurusa
1ce0fd15be uwb: umc-dev: add missing put_device call
This is required so that we give up the last reference to the device.

Signed-off-by: Levente Kurusa <levex@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-19 10:26:46 -08:00
Yijing Wang
0d4e5bee27 uwb: Use dev_is_pci() to check whether it is pci device
Use PCI standard marco dev_is_pci() instead of directly compare
pci_bus_type to check whether it is pci device.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:01:56 -08:00
Linus Torvalds
0324e74534 Driver Core / sysfs patches for 3.13-rc1
Here's the big driver core / sysfs update for 3.13-rc1.
 
 There's lots of dev_groups updates for different subsystems, as they all
 get slowly migrated over to the safe versions of the attribute groups
 (removing userspace races with the creation of the sysfs files.)  Also
 in here are some kobject updates, devres expansions, and the first round
 of Tejun's sysfs reworking to enable it to be used by other subsystems
 as a backend for an in-kernel filesystem.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlJ6xAMACgkQMUfUDdst+yk1kQCfcHXhfnrvFZ5J/mDP509IzhNS
 ddEAoLEWoivtBppNsgrWqXpD1vi4UMsE
 =JmVW
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core / sysfs patches from Greg KH:
 "Here's the big driver core / sysfs update for 3.13-rc1.

  There's lots of dev_groups updates for different subsystems, as they
  all get slowly migrated over to the safe versions of the attribute
  groups (removing userspace races with the creation of the sysfs
  files.) Also in here are some kobject updates, devres expansions, and
  the first round of Tejun's sysfs reworking to enable it to be used by
  other subsystems as a backend for an in-kernel filesystem.

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

* tag 'driver-core-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (83 commits)
  sysfs: rename sysfs_assoc_lock and explain what it's about
  sysfs: use generic_file_llseek() for sysfs_file_operations
  sysfs: return correct error code on unimplemented mmap()
  mdio_bus: convert bus code to use dev_groups
  device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name
  sysfs: separate out dup filename warning into a separate function
  sysfs: move sysfs_hash_and_remove() to fs/sysfs/dir.c
  sysfs: remove unused sysfs_get_dentry() prototype
  sysfs: honor bin_attr.attr.ignore_lockdep
  sysfs: merge sysfs_elem_bin_attr into sysfs_elem_attr
  devres: restore zeroing behavior of devres_alloc()
  sysfs: fix sysfs_write_file for bin file
  input: gameport: convert bus code to use dev_groups
  input: serio: remove bus usage of dev_attrs
  input: serio: use DEVICE_ATTR_RO()
  i2o: convert bus code to use dev_groups
  memstick: convert bus code to use dev_groups
  tifm: convert bus code to use dev_groups
  virtio: convert bus code to use dev_groups
  ipack: convert bus code to use dev_groups
  ...
2013-11-07 11:42:15 +09:00
Greg Kroah-Hartman
2fc74ac227 UWB: clean up attribute use by using ATTRIBUTE_GROUPS()
The ATTRIBUTE_GROUPS() macro can be used in the uwb code to reduce the
number of lines of code.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:43:36 -07:00
Greg Kroah-Hartman
1b604039a3 uwb: convert bus code to use dev_groups
The dev_attrs field of struct bus_type is going away soon, dev_groups
should be used instead.  This converts the uwb bus code to use the
correct field.

Cc: Bruno Morelli <bruno@evidence.eu.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-16 18:36:02 -07:00
Jingoo Han
67e51ec4ed uwb: Staticize local symbols
These local symbols are used only in this file.
Fix the following sparse warnings:

drivers/uwb/drp-ie.c:30:5: warning: symbol 'uwb_rsv_reason_code' was not declared. Should it be static?
drivers/uwb/drp-ie.c:58:5: warning: symbol 'uwb_rsv_companion_reason_code' was not declared. Should it be static?

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-19 17:08:16 -07:00
Thomas Pugliese
fbbde074ab UWB: fix sysfs warning on HWA device unplug.
In the disconnect routine for the hwa_hc interface, it calls
uwb_pal_unregister to unregister itself from the UWB subsystem.  This
function attempts to clean up the link to the host controller directory in
the device's UWB radio control interface directory.  If the disconnect
routine for the radio control interface has already run, the uwb directory
will be gone so the call to sysfs_remove_link generates a warning.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12 15:41:09 -07:00
Thomas Pugliese
c654ecbbfe HWA RC: fix a kernel panic when unplugging the HWA dongle
This patch fixes a kernel panic that can occur when unplugging the HWA
dongle while a downstream device is in the process of disconnecting.
This involved 2 changes.  First, call usb_lock_device_for_reset before
usb_reset_device to synchronize the HWA's post_rest and disconnect
routines.  Second, set the hwarc->neep_urb and hwarc->rd_buffer to NULL
when they are freed in the error path in the post_reset routine.  This
prevents a double free when the disconnect routine is called and attempts
to free those resources again.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12 15:41:08 -07:00
Kees Cook
02aa2a3763 drivers: avoid format string in dev_set_name
Calling dev_set_name with a single paramter causes it to be handled as a
format string.  Many callers are passing potentially dynamic string
content, so use "%s" in those cases to avoid any potential accidents,
including wrappers like device_create*() and bdi_register().

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:41 -07:00
Thomas Pugliese
a899575191 USB: HWA: fix device probe failure
This patch fixes a race condition that caused the HWA_HC interface probe
function to occasionally fail.  The HWA_HC would attempt to register
itself with the HWA_RC by searching for a uwb_rc class device with the
same parent device ptr.  If the probe function for the HWA_RC interface
had yet to run, the uwb_rc class device would not have been created
causing the look up to fail and the HWA_HC probe function to return an
error causing the device to be unusable.

The fix is for the HWA to delay registering with the HWA_RC until
receiving the command from userspace to start the wireless channel.  It
is the responsibility of userspace to ensure that the uwb_rc class
device has been created before starting the HWA channel.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:20:43 -07:00
Thomas Pugliese
3e6159eefd UWB: HWA: add support for Alereon 5310 and 5611 devices
This patch adds support for the Alereon 5310 and 5611 devices to the
HWA-rc driver.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-06 13:11:14 -07:00
Andy Shevchenko
021ad86940 uwb: use %*ph specifier to dump buffer
In kernel we have nice specifier %*ph to dump small buffers. Let's use it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03 14:33:26 -07:00
tpugliese
3138887bd8 usb: uwb: use correct locking calls for rc data
The rc object's members can be accessed from both a timer and URB
callback.  Use spin_*_irq instead of spin_*_bh.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 11:48:03 -07:00
Peter Huewe
c0c6e07949 uwb/whci: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 11:48:03 -07:00
Akinobu Mita
7878202326 uwb: rename random32() to prandom_u32()
Use preferable function name which implies using a pseudo-random
number generator.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 18:28:43 -07:00
Michał Mirosław
9f3b795a62 driver-core: constify data for class_find_device()
All in-kernel users of class_find_device() don't really need mutable
data for match callback.

In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c)
this patch changes match callbacks to use const search data.

The const is propagated to rtc_class_open() and power_supply_get_by_name()
parameters.

Note that there's a dev reference leak in suspend_test.c that's not
touched in this patch.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06 12:18:56 -08:00
Alexey Khoroshilov
ffa5c41c81 uwb: fix uwb_dev_unlock() missed at an error path in uwb_rc_cmd_async()
There is the only path in uwb_rc_cmd_async() where rc->uwb_dev is left unlocked.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-26 15:58:43 -08:00
Kees Cook
73050d7144 drivers/uwb: remove depends on CONFIG_EXPERIMENTAL
The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:39:03 -08:00