From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
The spec specifies that setting count to 0 in v4l2_requestbuffers
should result in releasing any streaming resources and the stream
ownership. Implement this.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Tested-by: Arvydas Sidorenko <asido4@xxxxxxxxx>
---
drivers/media/usb/stkwebcam/stk-webcam.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
index 0b25448..5aeef83 100644
--- a/drivers/media/usb/stkwebcam/stk-webcam.c
+++ b/drivers/media/usb/stkwebcam/stk-webcam.c
@@ -1008,6 +1008,13 @@ static int stk_vidioc_reqbufs(struct file *filp,
if (is_streaming(dev)
|| (dev->owner && dev->owner != filp))
return -EBUSY;
+ stk_free_buffers(dev);
+ if (rb->count == 0) {
+ stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
+ unset_initialised(dev);
+ dev->owner = NULL;
+ return 0;
+ }
dev->owner = filp;
/*FIXME If they ask for zero, we must stop streaming and free */
--
1.7.10.4
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