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authorSylwester Nawrocki <s.nawrocki@samsung.com>2012-11-21 11:46:43 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-11-26 18:43:08 -0200
commit9868018045c555c7a724c0cb7eeb0caeba9d43ff (patch)
tree8bc64d8de0f680a284713ccbd00587dd4e171e77 /drivers/media
parentddc43d6dc7df0849fe41b91460fa76145cf87b67 (diff)
downloadlinux-9868018045c555c7a724c0cb7eeb0caeba9d43ff.tar.bz2
[media] exynos-gsc: Don't use mutex_lock_interruptible() in device release()
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>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/exynos-gsc/gsc-m2m.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c
index 3c7f00577bd9..2650be3ccd5a 100644
--- a/drivers/media/platform/exynos-gsc/gsc-m2m.c
+++ b/drivers/media/platform/exynos-gsc/gsc-m2m.c
@@ -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);