diff options
| -rw-r--r-- | drivers/media/video/uvc/uvc_queue.c | 13 | ||||
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 14 | ||||
| -rw-r--r-- | drivers/media/video/uvc/uvcvideo.h | 5 |
3 files changed, 18 insertions, 14 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); diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index e8cc0a9ddad..7dcf534a0cf 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -441,7 +441,7 @@ static int uvc_video_decode_start(struct uvc_streaming *stream, if (fid != stream->last_fid && buf->buf.bytesused != 0) { uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit " "toggled).\n"); - buf->state = UVC_BUF_STATE_DONE; + buf->state = UVC_BUF_STATE_READY; return -EAGAIN; } @@ -470,7 +470,7 @@ static void uvc_video_decode_data(struct uvc_streaming *stream, /* Complete the current frame if the buffer size was exceeded. */ if (len > maxlen) { uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n"); - buf->state = UVC_BUF_STATE_DONE; + buf->state = UVC_BUF_STATE_READY; } } @@ -482,7 +482,7 @@ static void uvc_video_decode_end(struct uvc_streaming *stream, uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n"); if (data[0] == len) uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n"); - buf->state = UVC_BUF_STATE_DONE; + buf->state = UVC_BUF_STATE_READY; if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) stream->last_fid ^= UVC_STREAM_FID; } @@ -568,8 +568,7 @@ static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream, uvc_video_decode_end(stream, buf, mem, urb->iso_frame_desc[i].actual_length); - if (buf->state == UVC_BUF_STATE_DONE || - buf->state == UVC_BUF_STATE_ERROR) + if (buf->state == UVC_BUF_STATE_READY) buf = uvc_queue_next_buffer(&stream->queue, buf); } } @@ -627,8 +626,7 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, if (!stream->bulk.skip_payload && buf != NULL) { uvc_video_decode_end(stream, buf, stream->bulk.header, stream->bulk.payload_size); - if (buf->state == UVC_BUF_STATE_DONE || - buf->state == UVC_BUF_STATE_ERROR) + if (buf->state == UVC_BUF_STATE_READY) buf = uvc_queue_next_buffer(&stream->queue, buf); } @@ -669,7 +667,7 @@ static void uvc_video_encode_bulk(struct urb *urb, struct uvc_streaming *stream, stream->bulk.payload_size == stream->bulk.max_payload_size) { if (buf->buf.bytesused == stream->queue.buf_used) { stream->queue.buf_used = 0; - buf->state = UVC_BUF_STATE_DONE; + buf->state = UVC_BUF_STATE_READY; uvc_queue_next_buffer(&stream->queue, buf); stream->last_fid ^= UVC_STREAM_FID; } diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index 7ec9a04ced5..2337585001e 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -365,8 +365,9 @@ enum uvc_buffer_state { UVC_BUF_STATE_IDLE = 0, UVC_BUF_STATE_QUEUED = 1, UVC_BUF_STATE_ACTIVE = 2, - UVC_BUF_STATE_DONE = 3, - UVC_BUF_STATE_ERROR = 4, + UVC_BUF_STATE_READY = 3, + UVC_BUF_STATE_DONE = 4, + UVC_BUF_STATE_ERROR = 5, }; struct uvc_buffer { |