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[media] exynos-gsc: 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.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2012-11-21 11:46:43 -03:00 committed by Mauro Carvalho Chehab
parent ddc43d6dc7
commit 9868018045
1 changed files with 1 additions and 2 deletions
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3
drivers/media/platform/exynos-gsc/gsc-m2m.c
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@ -657,8 +657,7 @@ static int gsc_m2m_release(struct file *file)
pr_debug("pid: %d, state: 0x%lx, refcnt= %d",
task_pid_nr(current), gsc->state, gsc->m2m.refcnt);
if (mutex_lock_interruptible(&gsc->lock))
return -ERESTARTSYS;
mutex_lock(&gsc->lock);
v4l2_m2m_ctx_release(ctx->m2m_ctx);
gsc_ctrls_delete(ctx);