The exit condition to quit iterating over the sg_list, while encoding
the sg entries, has to consider the case that the dma_len of the entry
could be zero. This patch takes this condition to account.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
v1 - >v2: - new patch
drivers/usb/gadget/function/uvc_video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index ceeabc4ba3b167..a9bb4553db847e 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -155,7 +155,7 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video,
sg = sg_next(sg);
for_each_sg(sg, iter, ureq->sgt.nents - 1, i) {
- if (!len || !buf->sg)
+ if (!len || !buf->sg || !sg_dma_len(buf->sg))
break;
sg_left = sg_dma_len(buf->sg) - buf->offset;
--
2.30.2
