Richard Purdie 28ee086d5b backlight: Fix external uses of backlight internal semaphore ...

backlight_device->sem has a very specific use as documented in the
header file. The external users of this are using it for a different
reason, to serialise access to the update_status() method.

backlight users were supposed to implement their own internal
serialisation of update_status() if needed but everyone is doing
things differently and incorrectly. Therefore add a global mutex to
take care of serialisation for everyone, once and for all.

Locking for get_brightness remains optional since most users don't
need it.

Also update the lcd class in a similar way.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

2007-02-20 08:38:45 +00:00

..

sisusbvga

[PATCH] remove many unneeded #includes of sched.h

2007-02-14 08:09:54 -08:00

adutux.c

[PATCH] mark struct file_operations const 6

2007-02-12 09:48:45 -08:00

appledisplay.c

backlight: Fix external uses of backlight internal semaphore

2007-02-20 08:38:45 +00:00

auerswald.c

USB AUERSWALD: replace kmalloc+memset with kzalloc

2006-12-20 10:14:26 -08:00

berry_charge.c

USB: Driver to charge USB blackberry devices

2007-02-16 15:32:17 -08:00

cypress_cy7c63.c

USB: fix __must_check warnings in drivers/usb/misc/

2006-09-27 11:58:58 -07:00

cytherm.c

USB: fix __must_check warnings in drivers/usb/misc/

2006-09-27 11:58:58 -07:00

emi26_fw.h

…

emi26.c

USB: kmemdup() cleanup in drivers/usb/

2006-12-01 14:23:27 -08:00

emi62_fw_m.h

…

emi62_fw_s.h

…

emi62.c

USB: kmemdup() cleanup in drivers/usb/

2006-12-01 14:23:27 -08:00

ftdi-elan.c

[PATCH] mark struct file_operations const 6

2007-02-12 09:48:45 -08:00

idmouse.c

USB: Remove unneeded void * casts in idmouse.c

2007-02-07 15:44:32 -08:00

Kconfig

USB: Driver to charge USB blackberry devices

2007-02-16 15:32:17 -08:00

ldusb.c

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05 15:10:12 +01:00

legousbtower.c

usb: legousbtower free kill urb cleanup

2006-12-01 14:23:34 -08:00

Makefile

USB: Driver to charge USB blackberry devices

2007-02-16 15:32:17 -08:00

phidget.c

USB: Put phidgets driver in a sysfs class

2006-09-27 11:58:49 -07:00

phidget.h

USB: Put phidgets driver in a sysfs class

2006-09-27 11:58:49 -07:00

phidgetkit.c

[PATCH] slab: remove SLAB_ATOMIC

2006-12-07 08:39:24 -08:00

phidgetmotorcontrol.c

[PATCH] slab: remove SLAB_ATOMIC

2006-12-07 08:39:24 -08:00

phidgetservo.c

USB: Fix oops in PhidgetServo

2006-12-20 10:13:22 -08:00

rio500_usb.h

…

rio500.c

USB: mutexification of rio500

2007-02-07 15:44:32 -08:00

trancevibrator.c

USB: fix transvibrator disconnect race

2006-12-20 10:13:23 -08:00

usb_u132.h

Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6

2006-12-01 16:41:58 -08:00

usblcd.c

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05 15:10:12 +01:00

usbled.c

USB: fix __must_check warnings in drivers/usb/misc/

2006-09-27 11:58:58 -07:00

usbtest.c

[PATCH] slab: remove SLAB_KERNEL

2006-12-07 08:39:24 -08:00

uss720.c

[PATCH] Fix numerous kcalloc() calls, convert to kzalloc()

2006-12-13 09:05:52 -08:00