Restarting stream fails quite often. Small delay is between urb killing
and stream stop command - likely to give harware some time to process
killed urbs.
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/staging/media/msi3101/sdr-msi3101.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/media/msi3101/sdr-msi3101.c
b/drivers/staging/media/msi3101/sdr-msi3101.c
index c73f1d9..2180bf8 100644
--- a/drivers/staging/media/msi3101/sdr-msi3101.c
+++ b/drivers/staging/media/msi3101/sdr-msi3101.c
@@ -959,7 +959,7 @@ static int msi3101_ctrl_msg(struct msi3101_state *s, u8
cmd, u32 data)
msi3101_dbg_usb_control_msg(s->udev,
request, requesttype, value, index, NULL, 0);
- ret = usb_control_msg(s->udev, usb_rcvctrlpipe(s->udev, 0),
+ ret = usb_control_msg(s->udev, usb_sndctrlpipe(s->udev, 0),
request, requesttype, value, index, NULL, 0, 2000);
if (ret)
@@ -1300,12 +1300,15 @@ static int msi3101_stop_streaming(struct vb2_queue *vq)
if (mutex_lock_interruptible(&s->v4l2_lock))
return -ERESTARTSYS;
- msi3101_ctrl_msg(s, CMD_STOP_STREAMING, 0);
-
if (s->udev)
msi3101_isoc_cleanup(s);
msi3101_cleanup_queued_bufs(s);
+
+ /* according to tests, at least 700us delay is required */
+ msleep(20);
+ msi3101_ctrl_msg(s, CMD_STOP_STREAMING, 0);
+
mutex_unlock(&s->v4l2_lock);
return 0;
--
1.7.11.7
--
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