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[media] fimc-lite: Don't use mutex_lock_interruptible() in device release()

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Use uninterruptible mutex_lock in the release() file op to make
sure all resources are properly freed when a process is being
terminated. Returning -ERESTARTSYS has no effect for a terminating
process and this may cause driver resources not to be released.
This patch is required for stable kernels v3.5+.

Reported-by: Marek Szyprowski <[email protected]>
Signed-off-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Sylwester Nawrocki 2012-11-22 11:13:04 -03:00 • committed by Mauro Carvalho Chehab
commit ddc43d6dc7
1 changed files with 1 additions and 2 deletions
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3
drivers/media/platform/s5p-fimc/fimc-lite.c
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@ -491,8 +491,7 @@ static int fimc_lite_close(struct file *file)
struct fimc_lite *fimc = video_drvdata(file);
int ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
mutex_lock(&fimc->lock);
if (--fimc->ref_count == 0 && fimc->out_path == FIMC_IO_DMA) {
clear_bit(ST_FLITE_IN_USE, &fimc->state);