diff options
author | Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> | 2015-03-10 17:37:14 +0300 |
---|---|---|
committer | Sasha Levin <sasha.levin@oracle.com> | 2015-05-18 02:12:21 +0300 |
commit | 071dac7383e693aecb3837a7feb123b71d558ee9 (patch) | |
tree | 3ff0d37b3151913fe41a0f12b65afd61c2f135c1 /drivers/media/usb | |
parent | c2c7af9c23fbbb1d74cff6d84530dd48e04104d9 (diff) | |
download | linux-071dac7383e693aecb3837a7feb123b71d558ee9.tar.xz |
[media] stk1160: Make sure current buffer is released
[ Upstream commit aeff09276748b66072f2db2e668cec955cf41959 ]
The available (i.e. not used) buffers are returned by stk1160_clear_queue(),
on the stop_streaming() path. However, this is insufficient and the current
buffer must be released as well. Fix it.
Cc: stable@vger.kernel.org
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/media/usb')
-rw-r--r-- | drivers/media/usb/stk1160/stk1160-v4l.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/media/usb/stk1160/stk1160-v4l.c b/drivers/media/usb/stk1160/stk1160-v4l.c index 233054311a62..f6d0334f246e 100644 --- a/drivers/media/usb/stk1160/stk1160-v4l.c +++ b/drivers/media/usb/stk1160/stk1160-v4l.c @@ -244,6 +244,11 @@ static int stk1160_stop_streaming(struct stk1160 *dev) if (mutex_lock_interruptible(&dev->v4l_lock)) return -ERESTARTSYS; + /* + * Once URBs are cancelled, the URB complete handler + * won't be running. This is required to safely release the + * current buffer (dev->isoc_ctl.buf). + */ stk1160_cancel_isoc(dev); /* @@ -624,8 +629,16 @@ void stk1160_clear_queue(struct stk1160 *dev) stk1160_info("buffer [%p/%d] aborted\n", buf, buf->vb.v4l2_buf.index); } - /* It's important to clear current buffer */ - dev->isoc_ctl.buf = NULL; + + /* It's important to release the current buffer */ + if (dev->isoc_ctl.buf) { + buf = dev->isoc_ctl.buf; + dev->isoc_ctl.buf = NULL; + + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + stk1160_info("buffer [%p/%d] aborted\n", + buf, buf->vb.v4l2_buf.index); + } spin_unlock_irqrestore(&dev->buf_lock, flags); } |