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usb: gadget: uvc: rework uvcg_queue_next_buffer to uvcg_complete_buffer 

The function uvcg_queue_next_buffer is used different than its name
suggests. The return value nextbuf is never used by any caller. This
patch reworks the function to its actual purpose, by removing the unused
code and renaming it. The function name uvcg_complete_buffer makes it
more clear that it is actually marking the current video buffer as
complete.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220402232744.3622565-2-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2022-04-03 01:27:42 +02:00 committed by Greg Kroah-Hartman
parent be30e35027
commit 61aa709ca5
3 changed files with 6 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/usb/gadget/function/uvc_queue.c
View File

@ -315,24 +315,17 @@ int uvcg_queue_enable(struct uvc_video_queue *queue, int enable)
}
/* called with &queue_irqlock held.. */
struct uvc_buffer *uvcg_queue_next_buffer(struct uvc_video_queue *queue,
void uvcg_complete_buffer(struct uvc_video_queue *queue,
struct uvc_buffer *buf)
{
struct uvc_buffer *nextbuf;
if ((queue->flags & UVC_QUEUE_DROP_INCOMPLETE) &&
buf->length != buf->bytesused) {
buf->state = UVC_BUF_STATE_QUEUED;
vb2_set_plane_payload(&buf->buf.vb2_buf, 0, 0);
return buf;
return;
}
list_del(&buf->queue);
if (!list_empty(&queue->irqqueue))
nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
queue);
else
nextbuf = NULL;
buf->buf.field = V4L2_FIELD_NONE;
buf->buf.sequence = queue->sequence++;
@ -340,8 +333,6 @@ struct uvc_buffer *uvcg_queue_next_buffer(struct uvc_video_queue *queue,
vb2_set_plane_payload(&buf->buf.vb2_buf, 0, buf->bytesused);
vb2_buffer_done(&buf->buf.vb2_buf, VB2_BUF_STATE_DONE);
return nextbuf;
}
struct uvc_buffer *uvcg_queue_head(struct uvc_video_queue *queue)

2
drivers/usb/gadget/function/uvc_queue.h
View File

@ -92,7 +92,7 @@ void uvcg_queue_cancel(struct uvc_video_queue *queue, int disconnect);
int uvcg_queue_enable(struct uvc_video_queue *queue, int enable);
struct uvc_buffer *uvcg_queue_next_buffer(struct uvc_video_queue *queue,
void uvcg_complete_buffer(struct uvc_video_queue *queue,
struct uvc_buffer *buf);
struct uvc_buffer *uvcg_queue_head(struct uvc_video_queue *queue);

6
drivers/usb/gadget/function/uvc_video.c
View File

@ -112,7 +112,7 @@ uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video,
if (buf->bytesused == video->queue.buf_used) {
video->queue.buf_used = 0;
buf->state = UVC_BUF_STATE_DONE;
uvcg_queue_next_buffer(&video->queue, buf);
uvcg_complete_buffer(&video->queue, buf);
video->fid ^= UVC_STREAM_FID;
video->payload_size = 0;
@ -183,7 +183,7 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video,
video->queue.buf_used = 0;
buf->state = UVC_BUF_STATE_DONE;
buf->offset = 0;
uvcg_queue_next_buffer(&video->queue, buf);
uvcg_complete_buffer(&video->queue, buf);
video->fid ^= UVC_STREAM_FID;
}
}
@ -210,7 +210,7 @@ uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video,
if (buf->bytesused == video->queue.buf_used) {
video->queue.buf_used = 0;
buf->state = UVC_BUF_STATE_DONE;
uvcg_queue_next_buffer(&video->queue, buf);
uvcg_complete_buffer(&video->queue, buf);
video->fid ^= UVC_STREAM_FID;
}
}