diff options
| author | Brian Swetland | 2009-12-07 15:28:08 -0800 |
|---|---|---|
| committer | Daniel Walker | 2010-05-12 09:15:31 -0700 |
| commit | 636eb9cbaef7989ce7809a0d842bf78470a0a1f4 (patch) | |
| tree | 1a12088ad69cb37d5e3f3f25bdf03c7c9e8a7846 /arch/arm/mach-msm/include | |
| parent | 1207babdcdfe5501d1528c86b445a9d1045ecc01 (diff) | |
msm: smd: provide atomic channel writes
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>
Diffstat (limited to 'arch/arm/mach-msm/include')
| -rw-r--r-- | arch/arm/mach-msm/include/mach/msm_smd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/include/mach/msm_smd.h b/arch/arm/mach-msm/include/mach/msm_smd.h index bdf7731ab680..aa076e466e4c 100644 --- a/arch/arm/mach-msm/include/mach/msm_smd.h +++ b/arch/arm/mach-msm/include/mach/msm_smd.h @@ -38,6 +38,7 @@ int smd_read(smd_channel_t *ch, void *data, int len); ** it will return the requested length written or an error. */ int smd_write(smd_channel_t *ch, const void *data, int len); +int smd_write_atomic(smd_channel_t *ch, const void *data, int len); int smd_write_avail(smd_channel_t *ch); int smd_read_avail(smd_channel_t *ch); |