Commit Graph

195 Commits

Author SHA1 Message Date
David S. Miller
fc3e3bf55f Here are quite a large number of fixes, notably:
* various A-MSDU building fixes (currently only affects mt76)
  * syzkaller & spectre fixes in hwsim
  * TXQ vs. teardown fix that was causing crashes
  * embed WMM info in reg rule, bad code here had been causing crashes
  * one compilation issue with fix from Arnd (rfkill-gpio includes)
  * fixes for a race and bad data during/after channel switch
  * nl80211: a validation fix, attribute type & unit fixes
 along with other small fixes.
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Merge tag 'mac80211-for-davem-2018-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Here are quite a large number of fixes, notably:
 * various A-MSDU building fixes (currently only affects mt76)
 * syzkaller & spectre fixes in hwsim
 * TXQ vs. teardown fix that was causing crashes
 * embed WMM info in reg rule, bad code here had been causing crashes
 * one compilation issue with fix from Arnd (rfkill-gpio includes)
 * fixes for a race and bad data during/after channel switch
 * nl80211: a validation fix, attribute type & unit fixes
along with other small fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-03 22:12:02 -07:00
Arnd Bergmann
f623f75ae4 rfkill-gpio: include linux/mod_devicetable.h
One more driver is apparently broken by the recent change
to linux/platform_device.h:

net/rfkill/rfkill-gpio.c: In function 'rfkill_gpio_acpi_probe':
net/rfkill/rfkill-gpio.c:82:29: error: dereferencing pointer to incomplete type 'const struct acpi_device_id'

Include linux/mod_devicetable.h to get the definition of the
acpi_device_id structure.

Fixes: ac3167257b ("headers: separate linux/mod_devicetable.h from linux/platform_device.h")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-14 13:59:28 +02:00
Uwe Kleine-König
2282e125a4 leds: triggers: let struct led_trigger::activate() return an error code
Given that activating a trigger can fail, let the callback return an
indication. This prevents to have a trigger active according to the
"trigger" sysfs attribute but not functional.

All users are changed accordingly to return 0 for now. There is no intended
change in behaviour.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2018-07-05 23:21:10 +02:00
João Paulo Rechi Vita
232aa23ec3 rfkill: Create rfkill-none LED trigger
Creates a new trigger rfkill-none, as a complement to rfkill-any, which
drives LEDs when any radio is enabled. The new trigger is meant to turn
a LED ON whenever all radios are OFF, and turn it OFF otherwise.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-23 11:26:45 +02:00
João Paulo Rechi Vita
d874cd7430 rfkill: Rename rfkill_any_led_trigger* functions
Rename these functions to rfkill_global_led_trigger*, as they are going
to be extended to handle another global rfkill led trigger.

This commit does not change any functionality.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-23 11:25:05 +02:00
Johan Hovold
4bf01ca21e rfkill: gpio: fix memory leak in probe error path
Make sure to free the rfkill device in case registration fails during
probe.

Fixes: 5e7ca3937f ("net: rfkill: gpio: convert to resource managed allocation")
Cc: stable <stable@vger.kernel.org>	# 3.13
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-07 15:01:40 +02:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Al Viro
ade994f4f6 net: annotate ->poll() instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-27 16:20:04 -05:00
Andy Shevchenko
4524667b1e net: rfkill: gpio: Switch to devm_acpi_dev_add_driver_gpios()
Switch to use managed variant of acpi_dev_add_driver_gpios() to simplify
error path and fix potentially wrong assingment if ->probe() fails.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-06-13 11:07:51 +02:00
Johannes Berg
1331b62c97 rfkill: remove rfkill-regulator
There are no users of this ("vrfkill") in the tree, so it's just
dead code - remove it.

This also isn't really how rfkill is supposed to be used - it's
intended as a signalling mechanism to/from the device, which the
driver (and partially cfg80211) will handle - having a separate
rfkill instance for a regulator is confusing, the driver should
use the regulator instead to turn off the device when requested.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-01-24 11:07:35 +01:00
Michał Kępień
9b8e34e211 rfkill: Add rfkill-any LED trigger
Add a new "global" (i.e. not per-rfkill device) LED trigger, rfkill-any,
which may be useful on laptops with a single "radio LED" and multiple
radio transmitters.  The trigger is meant to turn a LED on whenever
there is at least one radio transmitter active and turn it off
otherwise.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-01-09 11:40:33 +01:00
Johannes Berg
7b854982b2 Revert "rfkill: Add rfkill-any LED trigger"
This reverts commit 73f4f76a19.

As Mike reported, and I should've seen in review, we can't call
the new LED functions, which acquire the mutex, from places like
rfkill_set_sw_state() that are documented to be callable from
any context the user likes to use. For Mike's case it led to a
deadlock, but other scenarios are possible.

Reported-by: Михаил Кринкин <krinkin.m.u@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-20 08:45:54 +01:00
Arnd Bergmann
f6b4122c93 rfkill: hide unused goto label
A cleanup introduced a harmless warning in some configurations:

net/rfkill/core.c: In function 'rfkill_init':
net/rfkill/core.c:1350:1: warning: label 'error_input' defined but not used [-Wunused-label]

This adds another #ifdef around the label to match that around the
caller.

Fixes: 6124c53ede ("rfkill: Cleanup error handling in rfkill_init()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-16 10:05:39 +01:00
Michał Kępień
73f4f76a19 rfkill: Add rfkill-any LED trigger
Add a new "global" (i.e. not per-rfkill device) LED trigger, rfkill-any,
which may be useful on laptops with a single "radio LED" and multiple
radio transmitters.  The trigger is meant to turn a LED on whenever
there is at least one radio transmitter active and turn it off
otherwise.

This requires taking rfkill_global_mutex before calling rfkill_set_block()
in rfkill_resume(): since __rfkill_any_led_trigger_event() is called from
rfkill_set_block() unconditionally, each caller of the latter needs to
take care of locking rfkill_global_mutex.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 16:20:29 +01:00
Michał Kępień
6124c53ede rfkill: Cleanup error handling in rfkill_init()
Use a separate label per error condition in rfkill_init() to make it a
bit cleaner and easier to extend.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 16:20:29 +01:00
Johannes Berg
74204f8fa1 rfkill: simplify rfkill_set_hw_state() slightly
Simplify the two conditions gating the schedule_work() into
a single one and get rid of the additional exit point from
the function in doing so.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 16:04:35 +01:00
João Paulo Rechi Vita
1948b2a2ec rfkill: Use switch to demux userspace operations
Using a switch to handle different ev.op values in rfkill_fop_write()
makes the code easier to extend, as out-of-range values can always be
handled by the default case.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
[roll in fix for RFKILL_OP_CHANGE from Jouni]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:53 +02:00
David S. Miller
d67703fced Here's another round of updates for -next:
* big A-MSDU RX performance improvement (avoid linearize of paged RX)
  * rfkill changes: cleanups, documentation, platform properties
  * basic PBSS support in cfg80211
  * MU-MIMO action frame processing support
  * BlockAck reordering & duplicate detection offload support
  * various cleanups & little fixes
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Merge tag 'mac80211-next-for-davem-2016-02-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Here's another round of updates for -next:
 * big A-MSDU RX performance improvement (avoid linearize of paged RX)
 * rfkill changes: cleanups, documentation, platform properties
 * basic PBSS support in cfg80211
 * MU-MIMO action frame processing support
 * BlockAck reordering & duplicate detection offload support
 * various cleanups & little fixes
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-01 17:03:27 -05:00
João Paulo Rechi Vita
9487bd6b96 rfkill: Factor rfkill_global_states[].cur assignments
Factor all assignments to rfkill_global_states[].cur into a single
function rfkill_update_global_state().

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:13:11 +01:00
João Paulo Rechi Vita
1a1078901b rfkill: Remove extra blank line
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:13:10 +01:00
João Paulo Rechi Vita
3ff707d668 rfkill: Improve documentation language
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:13:09 +01:00
Heikki Krogerus
fb2e6b7b7b net: rfkill: gpio: remove rfkill_gpio_platform_data
No more users for it.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:13:09 +01:00
Heikki Krogerus
7d5e9737ef net: rfkill: gpio: get the name and type from device property
This prepares the driver for removal of platform data.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:13:08 +01:00
Heikki Krogerus
648b50dd6a net: rfkill: add rfkill_find_type function
Helper for finding the type based on name. Useful if the
type needs to be determined based on device property.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
[modify rfkill_types array and BUILD_BUG_ON to not cause errors]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:12:45 +01:00
João Paulo Rechi Vita
e2a35e8929 rfkill: Remove obsolete "claim" sysfs interface
This was scheduled to be removed in 2012 by:

 commit 69c86373c6
 Author: florian@mickler.org <florian@mickler.org>
 Date:   Wed Feb 24 12:05:16 2010 +0100

     Document the rfkill sysfs ABI

     This moves sysfs ABI info from Documentation/rfkill.txt to the
     ABI subfolder and reformats it.

     This also schedules the deprecated sysfs parts to be removed in
     2012 (claim file) and 2014 (state file).

     Signed-off-by: Florian Mickler <florian@mickler.org>
     Signed-off-by: John W. Linville <linville@tuxdriver.com>

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:24 +01:00
João Paulo Rechi Vita
1926e260d8 rfkill: remove/inline __rfkill_set_hw_state
__rfkill_set_hw_state() is only one used in rfkill_set_hw_state(), and
none of them are long or complicated, so merging the two makes the code
easier to read.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:24 +01:00
João Paulo Rechi Vita
f3e7fae248 rfkill: use variable instead of duplicating the expression
RFKILL_BLOCK_SW value have just been saved to prev, no need to check it
again in the if expression. This makes code a little bit easier to read.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:23 +01:00
Johannes Berg
dd21dfc645 rfkill: disentangle polling pause and suspend
When suspended while polling is paused, polling will erroneously
resume at resume time. Fix this by tracking pause and suspend in
separate state variable and adding the necessary checks.

Clarify the documentation on this as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:22 +01:00
Johannes Berg
6736fde967 rfkill: fix rfkill_fop_read wait_event usage
The code within wait_event_interruptible() is called with
!TASK_RUNNING, so mustn't call any functions that can sleep,
like mutex_lock().

Since we re-check the list_empty() in a loop after the wait,
it's safe to simply use list_empty() without locking.

This bug has existed forever, but was only discovered now
because all userspace implementations, including the default
'rfkill' tool, use poll() or select() to get a readable fd
before attempting to read.

Cc: stable@vger.kernel.org
Fixes: c64fb01627 ("rfkill: create useful userspace interface")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-26 11:32:05 +01:00
Heikki Krogerus
d3d2072540 Bluetooth: hci_bcm: move all Broadcom ACPI IDs to BCM HCI driver
The IDs should all be for Broadcom BCM43241 module, and
hci_bcm is now the proper driver for them. This removes one
of two different ways of handling PM with the module.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-01-04 19:22:05 +01:00
Johannes Berg
b7bb110008 rfkill: copy the name into the rfkill struct
Some users of rfkill, like NFC and cfg80211, use a dynamic name when
allocating rfkill, in those cases dev_name(). Therefore, the pointer
passed to rfkill_alloc() might not be valid forever, I specifically
found the case that the rfkill name was quite obviously an invalid
pointer (or at least garbage) when the wiphy had been renamed.

Fix this by making a copy of the rfkill name in rfkill_alloc().

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-10 10:37:51 +01:00
João Paulo Rechi Vita
4c0778933a rfkill: Copy "all" global state to other types
When switching the state of all RFKill switches of type all we need to
replicate the RFKILL_TYPE_ALL global state to all the other types global
state, so it is used to initialize persistent RFKill switches on
register.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-04 14:26:56 +02:00
David S. Miller
0aa65cc0c2 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:

====================
pull request: bluetooth-next 2015-08-16

Here's what's likely the last bluetooth-next pull request for 4.3:

 - 6lowpan/802.15.4 refactoring, cleanups & fixes
 - Document 6lowpan netdev usage in Documentation/networking/6lowpan.txt
 - Support for UART based QCA Bluetooth controllers
 - Power management support for Broeadcom Bluetooth controllers
 - Change LE connection initiation to always use passive scanning first
 - Support for new Silicon Wave USB ID

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-17 15:41:21 -07:00
Geert Uytterhoeven
36890997b0 rfkill: Allow compile test of GPIO consumers if !GPIOLIB
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-08-13 10:48:52 +02:00
Frederic Danis
9e6080936c net: rfkill: gpio: Remove BCM2E39 support
Power management support for BCM2E39 is now performed in Bluetooth
BCM UART driver.

Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-08-11 21:26:27 +02:00
Uwe Kleine-König
f7959e9c73 net: rfkill: gpio: make better use of gpiod API
Since 39b2bbe3d7 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for output.

Furthermore there is devm_gpiod_get_optional which is designed to get
optional gpios.

Simplify driver accordingly.

Note this makes error checking more strict because only -ENOENT is
ignored when searching for the GPIOs which is good.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-29 13:13:45 +02:00
Lars-Peter Clausen
28f297a7af net: rfkill: Switch to PM ops
Use dev_pm_ops instead of the legacy suspend/resume callbacks for the
rfkill class suspend and resume operations.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-20 15:00:00 +02:00
David S. Miller
940288b6a5 Last round of updates for net-next:
* revert a patch that caused a regression with mesh userspace (Bob)
  * fix a number of suspend/resume related races
    (from Emmanuel, Luca and myself - we'll look at backporting later)
  * add software implementations for new ciphers (Jouni)
  * add a new ACPI ID for Broadcom's rfkill (Mika)
  * allow using netns FD for wireless (Vadim)
  * some other cleanups (various)
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Merge tag 'mac80211-next-for-davem-2015-02-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Last round of updates for net-next:
 * revert a patch that caused a regression with mesh userspace (Bob)
 * fix a number of suspend/resume related races
   (from Emmanuel, Luca and myself - we'll look at backporting later)
 * add software implementations for new ciphers (Jouni)
 * add a new ACPI ID for Broadcom's rfkill (Mika)
 * allow using netns FD for wireless (Vadim)
 * some other cleanups (various)

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 14:57:45 -08:00
Mika Westerberg
79044f60ca net: rfkill: Add Broadcom BCM2E40 bluetooth ACPI ID
This is yet another Broadcom bluetooth chip with ACPI ID BCM2E40.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-02-03 14:38:22 +01:00
Linus Torvalds
e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00
Mika Westerberg
72daceb9a1 net: rfkill: gpio: Add default GPIO driver mappings for ACPI
The driver uses devm_gpiod_get_index(..., index) so that the index refers
directly to the GpioIo resource under the ACPI device. The problem with
this is that if the ordering changes we get wrong GPIOs.

With ACPI 5.1 _DSD we can now use names instead to reference GPIOs
analogous to Device Tree. However, we still have systems out there that do
not provide _DSD at all. These systems must be supported as well.

Luckily we now have acpi_dev_add_driver_gpios() that can be used to provide
mappings for systems where _DSD is not provided and still take advantage of
_DSD if it exists.

This patch changes the driver to create default GPIO mappings if we are
running on ACPI system.

While there we can drop the indices completely and use devm_gpiod_get()
with name instead.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-11-04 21:58:24 +01:00
Wolfram Sang
140bbc4af0 net: rfkill: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:21:58 +02:00
Fabian Frederick
2f29fed3f8 net: rfkill: kernel-doc warning fixes
s/state/blocked

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-08 15:24:15 -04:00
Loic Poulain
fa5c107cc8 net: rfkill: gpio: Fix clock status
Clock is disabled when the device is blocked.
So, clock_enabled is the logical negation of "blocked".

Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-09-22 16:02:15 -04:00
Marcel Holtmann
dda3b191eb net: rfkill: gpio: Enable module auto-loading for ACPI based switches
For the ACPI based switches the MODULE_DEVICE_TABLE is missing to
export the entries for module auto-loading.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-09-16 16:09:01 -04:00
Mika Westerberg
fb70118c0e net: rfkill: gpio: Add more Broadcom bluetooth ACPI IDs
This adds one more ACPI ID of a Broadcom bluetooth chip.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-08-25 15:39:23 -04:00
John W. Linville
40a10fd740 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-05-22 13:58:36 -04:00
Loic Poulain
771bb3ddc2 rfkill-gpio: Use gpio cansleep version
If gpio controller requires waiting for read and write
GPIO values, then we have to use the gpio cansleep api.
Fix the rfkill_gpio_set_power which calls only the
nonsleep version (causing kernel warning).
There is no problem to use the cansleep version here
because we are not in IRQ handler or similar context
(cf rfkill_set_block).

Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-07 13:20:59 +02:00
Heikki Krogerus
781d4e0fb7 net: rfkill: gpio: hard-code the gpio names
There is no need to dynamically generate the names. This
will fix a static checker warning..

net/rfkill/rfkill-gpio.c:144 rfkill_gpio_probe()
    warn: variable dereferenced before check 'rfkill->name'

Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-11 09:29:22 +02:00
Heikki Krogerus
41d09df1e0 net: rfkill: gpio: add ACPI IDs for a Broadcom bluetooth chip
This adds ACPI IDs for Broadcom bluetooth chip BCM43241 used
on various Baytrail based boards such as Lenovo Miix 2 and
Asus Transformer Book T100TA.

Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-11 09:29:21 +02:00