[media] uvcvideo: Move fields from uvc_buffer::buf to uvc_buffer

Add mem, length and bytesused fields to the uvc_buffer structure and use
them instead of accessing the uvc_buffer::buf m.offset, length and
bytesused fields directly. This prepares the driver to the conversion to
videobuf2.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/media/video/uvc/uvc_isight.c b/drivers/media/video/uvc/uvc_isight.c
index 74bbe8f18f3e..8510e7259e76 100644
--- a/drivers/media/video/uvc/uvc_isight.c
+++ b/drivers/media/video/uvc/uvc_isight.c
@@ -74,7 +74,7 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
          * Empty buffers (bytesused == 0) don't trigger end of frame detection
          * as it doesn't make sense to return an empty buffer.
          */
-        if (is_header && buf->buf.bytesused != 0) {
+        if (is_header && buf->bytesused != 0) {
                 buf->state = UVC_BUF_STATE_DONE;
                 return -EAGAIN;
         }
@@ -83,13 +83,13 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
          * contain no data.
          */
         if (!is_header) {
-                maxlen = buf->buf.length - buf->buf.bytesused;
-                mem = queue->mem + buf->buf.m.offset + buf->buf.bytesused;
+                maxlen = buf->length - buf->bytesused;
+                mem = buf->mem + buf->bytesused;
                 nbytes = min(len, maxlen);
                 memcpy(mem, data, nbytes);
-                buf->buf.bytesused += nbytes;
+                buf->bytesused += nbytes;
 
-                if (len > maxlen || buf->buf.bytesused == buf->buf.length) {
+                if (len > maxlen || buf->bytesused == buf->length) {
                         uvc_trace(UVC_TRACE_FRAME, "Frame complete "
                                   "(overflow).\n");
                         buf->state = UVC_BUF_STATE_DONE;