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28ee086d5b
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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
..
acpi Pull bugzilla-7887 into release branch 2007-02-16 22:11:57 -05:00
asm-alpha [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-arm Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-02-19 13:29:02 -08:00
asm-arm26 Storage class should be before const qualifier 2007-02-17 20:11:19 +01:00
asm-avr32 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-02-19 13:18:39 -08:00
asm-cris [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-frv [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-generic [PATCH] i386: paravirt CPU hypercall batching mode 2007-02-13 13:26:21 +01:00
asm-h8300 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-i386 Pull misc-for-upstream into release branch 2007-02-16 18:52:41 -05:00
asm-ia64 Storage class should be before const qualifier 2007-02-17 20:11:19 +01:00
asm-m32r [PATCH] fix sparse warnings from {asm,net}/checksum.h 2007-02-11 10:51:31 -08:00
asm-m68k [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-m68knommu [PATCH] m68knommu: removed include of system.h from bitops 2007-02-09 10:45:33 -08:00
asm-mips [MIPS] Fixup copy_from_user_inatomic 2007-02-20 01:26:42 +00:00
asm-parisc [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-powerpc [POWERPC] QE: clean up ucc_slow.c and ucc_fast.c 2007-02-17 16:12:54 -06:00
asm-ppc [POWERPC] ppc: Add support for AMCC Taishan 440GX eval board 2007-02-13 15:35:52 +11:00
asm-s390 [S390] remove __io_virt and mmiowb. 2007-02-12 15:49:57 +01:00
asm-sh sh: rts7751r2d board updates. 2007-02-15 18:20:52 +09:00
asm-sh64 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-sparc [PATCH] add missing io...._rep() on sparc32 2007-02-11 11:18:07 -08:00
asm-sparc64 [SPARC64]: Increase command line size to 2048 like other arches. 2007-02-12 15:15:47 -08:00
asm-um [PATCH] uml: x86_64 ptrace fixes 2007-02-11 10:51:24 -08:00
asm-v850 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-x86_64 [PATCH] time: x86_64: re-enable vsyscall support for x86_64 2007-02-16 08:14:00 -08:00
asm-xtensa [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
crypto [CRYPTO] api: Allow multiple frontends per backend 2007-02-07 09:21:01 +11:00
keys
linux backlight: Fix external uses of backlight internal semaphore 2007-02-20 08:38:45 +00:00
math-emu
media
mtd [MTD] remove unused ecctype,eccsize fields from struct mtd_info 2007-02-09 15:27:12 +00:00
net [IPSEC]: changing API of xfrm6_tunnel_register 2007-02-13 12:55:55 -08:00
pcmcia serial: Add PCMCIA IDs for Quatech DSP-100 dual RS232 adapter. 2007-02-16 15:19:16 -08:00
rdma RDMA/cma: Add multicast communication support 2007-02-16 14:29:07 -08:00
rxrpc
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-02-19 13:32:28 -08:00
sound [ALSA] version 1.0.14rc2 2007-02-14 08:42:20 +01:00
video [PATCH] Video: fb, add true ref_count atomicity 2007-02-12 09:48:42 -08:00
Kbuild