Covert leds_list_lock to a rw_sempahore to match previous LED trigger
locking fixes, fixing lock ordering.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Convert part of the led trigger core from rw spinlocks to rw
semaphores. We're calling functions which can sleep from invalid
contexts otherwise. Fixes bug #9264.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Three bugfixes to the leds-gpio driver, plus minor whitespace tweaks:
- Do the INIT_WORK() before registering each LED, so if its trigger
becomes immediately active it can schedule work without oopsing..
- Use normal registration, not platform_driver_probe(), so that
devices appearing "late" (hotplug type) can still be bound.
- Mark the driver remove code as "__devexit", preventing oopses
when the underlying device is removed.
These issues came up when using this driver with some GPIO expanders
living on serial busses, which act unlike "normal" platform devices:
they can appear and vanish along with the serial bus driver.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits)
kbuild: introduce ccflags-y, asflags-y and ldflags-y
kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP
kbuild: enable use of AFLAGS and CFLAGS on commandline
kbuild: enable 'make AFLAGS=...' to add additional options to AS
kbuild: fix AFLAGS use in h8300 and m68knommu
kbuild: check for wrong use of CFLAGS
kbuild: enable 'make CFLAGS=...' to add additional options to CC
kbuild: fix up CFLAGS usage
kbuild: make modpost detect unterminated device id lists
kbuild: call export_report from the Makefile
kbuild: move Kai Germaschewski to CREDITS
kconfig/menuconfig: distinguish between selected-by-another options and comments
kconfig: tristate choices with mixed tristate and boolean values
include/linux/Kbuild: remove duplicate entries
kbuild: kill backward compatibility checks
kbuild: kill EXTRA_ARFLAGS
kbuild: fix documentation in makefiles.txt
kbuild: call make once for all targets when O=.. is used
kbuild: pass -g to assembler under CONFIG_DEBUG_INFO
kbuild: update _shipped files for kconfig syntax cleanup
...
Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.
The leds-cobalt driver only supports the Coable Qube series
(not included in Cobalt Raq series).
Rename the driver and update Kconfig/Makefile.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Convert the LEDs class from struct class_device to struct device
since class_device is scheduled for removal.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix led_trigger_unregister_simple to handle the case where
led_trigger_register_simple fails, avoiding a NULL pointer
dereference.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Change Kconfig objects from "menu, config" into "menuconfig" so
that the user can disable the whole feature without having to
enter the menu first.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Teach the new leds-gpio driver that some GPIOs can't be accessed from
timer callbacks ... which is how all today's standard triggers use them.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
This patch adds support for GPIO connected leds via the new GPIO framework.
Information about leds (gpio, polarity, name, default trigger) is passed
to the driver via platform_data.
Signed-off-by: Raphael Assenat <raph@8d.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Add "depends on HAS_IOMEM" to a number of menus to make them
disappear for s390 which does not have I/O memory.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This patch adds the support for the IPAQ h1940 leds.
In order to create the amber led (used for the battery charging), the red and
green leds are set to the same default trigger. Due to hardware limitations,
the blue led can only be set in blinking mode.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Standardize the miniscule percentage of occurrences of "depends" in
Kconfig files to "depends on", and update kconfig-language.txt to
reflect that.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
A driver for the PCEngines WRAP boards (http://www.pcengines.ch), which are
very similar to the Soekris net4801 (same NS SC1100 geode reference
design).
The LEDs on the WRAP are on different GPIO lines and I have modified and
copied the net48xx error led support for this. It also includes support
for an "extra" led (in addition to error). The three LEDs on the WRAP are
at GPIO lines 2,3,18 (WRAP LEDs from left to right). This driver gives
access to the second and third LEDs by twiddling GPIO lines 3 & 18.
Because these boards are so similar to the net48xx, I basically sed-ed that
driver to form the basis for leds-wrap.c. The only changes from
leds-net48xx.c are:
- #define WRAP_EXTRA_LED_GPIO
- name changes
- duplicate relevant sections to provide support for the "extra" led
- reverse the various *_led_set values. The WRAP is "backwards" from the
net48xx, and these needed to be updated for that.
[akpm@osdl.org: build fix]
Signed-off-by: Kristian Kielhofner <kris@krisk.org>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Richard Purdie
David Brownell
Uwe Kleine-König
Linus Torvalds
Mike Rapoport
Adrian Bunk
Yoichi Yuasa
Jan Engelhardt
David Brownell
Raphael Assenat
Martin Schwidefsky
Florian Fainelli
Arnaud Patard
Robert P. J. Day
Kristian Kielhofner
Al Viro