msm: smd: provide atomic channel writes

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Some smd clients may write from multiple threads, in which case it's
not safe to call smd_write without holding a lock.  smd_write_atomic()
provides the same functionality as smd_write() but obtains the smd
lock first.

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

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Brian Swetland 2009-12-07 15:28:08 -08:00 • committed by Daniel Walker

parent 1207babdcd

commit 636eb9cbae

2 changed files with 11 additions and 0 deletions

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1

arch/arm/mach-msm/include/mach/msm_smd.h

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10

arch/arm/mach-msm/smd.c

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