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path: root/drivers/media/video/uvc/uvc_queue.c
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Diffstat (limited to 'drivers/media/video/uvc/uvc_queue.c')
-rw-r--r--drivers/media/video/uvc/uvc_queue.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index f854698c406..ea11839cba4 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -59,9 +59,9 @@
* returns immediately.
*
* When the buffer is full, the completion handler removes it from the irq
- * queue, marks it as ready (UVC_BUF_STATE_DONE) and wakes its wait queue.
+ * queue, marks it as done (UVC_BUF_STATE_DONE) and wakes its wait queue.
* At that point, any process waiting on the buffer will be woken up. If a
- * process tries to dequeue a buffer after it has been marked ready, the
+ * process tries to dequeue a buffer after it has been marked done, the
* dequeing will succeed immediately.
*
* 2. Buffers are queued, user is waiting on a buffer and the device gets
@@ -201,6 +201,7 @@ static void __uvc_query_buffer(struct uvc_buffer *buf,
break;
case UVC_BUF_STATE_QUEUED:
case UVC_BUF_STATE_ACTIVE:
+ case UVC_BUF_STATE_READY:
v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED;
break;
case UVC_BUF_STATE_IDLE:
@@ -295,13 +296,15 @@ static int uvc_queue_waiton(struct uvc_buffer *buf, int nonblocking)
{
if (nonblocking) {
return (buf->state != UVC_BUF_STATE_QUEUED &&
- buf->state != UVC_BUF_STATE_ACTIVE)
+ buf->state != UVC_BUF_STATE_ACTIVE &&
+ buf->state != UVC_BUF_STATE_READY)
? 0 : -EAGAIN;
}
return wait_event_interruptible(buf->wait,
buf->state != UVC_BUF_STATE_QUEUED &&
- buf->state != UVC_BUF_STATE_ACTIVE);
+ buf->state != UVC_BUF_STATE_ACTIVE &&
+ buf->state != UVC_BUF_STATE_READY);
}
/*
@@ -348,6 +351,7 @@ int uvc_dequeue_buffer(struct uvc_video_queue *queue,
case UVC_BUF_STATE_IDLE:
case UVC_BUF_STATE_QUEUED:
case UVC_BUF_STATE_ACTIVE:
+ case UVC_BUF_STATE_READY:
default:
uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state %u "
"(driver bug?).\n", buf->state);
@@ -489,6 +493,7 @@ struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
spin_lock_irqsave(&queue->irqlock, flags);
list_del(&buf->queue);
+ buf->state = UVC_BUF_STATE_DONE;
if (!list_empty(&queue->irqqueue))
nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
queue);