diff options
| author | Ezequiel Garcia <elezegarcia@gmail.com> | 2012-08-20 04:23:46 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-09-25 17:56:48 +0400 |
| commit | 8ac456495a33d9466076fea94594181ceefb76d9 (patch) | |
| tree | d452d0c40004d1eaee6b34a0838fc8932eda2997 /drivers/media/usb | |
| parent | c6b69c6c58288587c33efb43ca6e19f1c80b2757 (diff) | |
| download | linux-8ac456495a33d9466076fea94594181ceefb76d9.tar.xz | |
[media] stk1160: Stop device and unqueue buffers when start_streaming() fails
If start_streaming() fails (e.g. out of memory) the driver needs to
rewind the start procedure. This implies possibly stopping the device
and clearing the buffer queue.
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/stk1160/stk1160-v4l.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/media/usb/stk1160/stk1160-v4l.c b/drivers/media/usb/stk1160/stk1160-v4l.c index 879800dd162f..fe6e857969ca 100644 --- a/drivers/media/usb/stk1160/stk1160-v4l.c +++ b/drivers/media/usb/stk1160/stk1160-v4l.c @@ -184,7 +184,7 @@ static int stk1160_start_streaming(struct stk1160 *dev) if (!dev->isoc_ctl.num_bufs || new_pkt_size) { rc = stk1160_alloc_isoc(dev); if (rc < 0) - goto out_unlock; + goto out_stop_hw; } /* submit urbs and enables IRQ */ @@ -192,8 +192,7 @@ static int stk1160_start_streaming(struct stk1160 *dev) rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_KERNEL); if (rc) { stk1160_err("cannot submit urb[%d] (%d)\n", i, rc); - stk1160_uninit_isoc(dev); - goto out_unlock; + goto out_uninit; } } @@ -206,7 +205,16 @@ static int stk1160_start_streaming(struct stk1160 *dev) stk1160_dbg("streaming started\n"); -out_unlock: + mutex_unlock(&dev->v4l_lock); + + return 0; + +out_uninit: + stk1160_uninit_isoc(dev); +out_stop_hw: + usb_set_interface(dev->udev, 0, 0); + stk1160_clear_queue(dev); + mutex_unlock(&dev->v4l_lock); return rc; |