diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-05-26 10:49:22 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-04 16:11:44 -0300 |
| commit | a85fd20fb62e5720ea4831b132334abc618972dd (patch) | |
| tree | 9fc9eecc8c11a5617de048ee857a7d4942f9d5f1 /drivers/media/v4l2-core/v4l2-mem2mem.c | |
| parent | 7e49027e62b9cb8addcd00f7498d389469f119d4 (diff) | |
| download | linux-a85fd20fb62e5720ea4831b132334abc618972dd.tar.bz2 | |
[media] mem2mem: make queue lock in v4l2_m2m_poll interruptible
This patch makes the queue lock taken in v4l2_m2m_poll interruptible.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-mem2mem.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 178ce96556c6..97defed7c1ac 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -568,8 +568,12 @@ unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, if (m2m_ctx->m2m_dev->m2m_ops->lock) m2m_ctx->m2m_dev->m2m_ops->lock(m2m_ctx->priv); - else if (m2m_ctx->q_lock) - mutex_lock(m2m_ctx->q_lock); + else if (m2m_ctx->q_lock) { + if (mutex_lock_interruptible(m2m_ctx->q_lock)) { + rc |= POLLERR; + goto end; + } + } spin_lock_irqsave(&src_q->done_lock, flags); if (!list_empty(&src_q->done_list)) |