The function uvc_video_encode_header function returns the number of
bytes used for the header. We change the video_encode_isoc_sg function
to use the returned header_len rather than UVCG_REQUEST_HEADER_LEN and
make the encode function more flexible.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
drivers/usb/gadget/function/uvc_video.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index 7bc865eab27b3..2a9ab54bb3dc3 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -104,22 +104,22 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video,
unsigned int len = video->req_size;
unsigned int sg_left, part = 0;
unsigned int i;
- int ret;
+ int header_len;
sg = ureq->sgt.sgl;
sg_init_table(sg, ureq->sgt.nents);
/* Init the header. */
- ret = uvc_video_encode_header(video, buf, ureq->header,
+ header_len = uvc_video_encode_header(video, buf, ureq->header,
video->req_size);
- sg_set_buf(sg, ureq->header, UVCG_REQUEST_HEADER_LEN);
- len -= ret;
+ sg_set_buf(sg, ureq->header, header_len);
+ len -= header_len;
if (pending <= len)
len = pending;
req->length = (len == pending) ?
- len + UVCG_REQUEST_HEADER_LEN : video->req_size;
+ len + header_len : video->req_size;
/* Init the pending sgs with payload */
sg = sg_next(sg);
@@ -148,7 +148,7 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video,
req->num_sgs = i + 1;
req->length -= len;
- video->queue.buf_used += req->length - UVCG_REQUEST_HEADER_LEN;
+ video->queue.buf_used += req->length - header_len;
if (buf->bytesused == video->queue.buf_used || !buf->sg) {
video->queue.buf_used = 0;
--
2.30.2
