The uvc request headerlen of 2 was defined as UVCG_REQUEST_HEADER_LEN
in commit e81e7f9a0eb9 ("usb: gadget: uvc: add scatter gather support").
We missed to use it consistently. This patch fixes that.
Reviewed-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
v2: - added reviewed by
drivers/usb/gadget/function/uvc_video.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index b4a763e5f70e1..da93b46df464d 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -302,7 +302,9 @@ uvc_video_alloc_requests(struct uvc_video *video)
list_add_tail(&video->ureq[i].req->list, &video->req_free);
/* req_size/PAGE_SIZE + 1 for overruns and + 1 for header */
sg_alloc_table(&video->ureq[i].sgt,
- DIV_ROUND_UP(req_size - 2, PAGE_SIZE) + 2,
+ DIV_ROUND_UP(req_size - UVCG_REQUEST_HEADER_LEN,
+ PAGE_SIZE) +
+ UVCG_REQUEST_HEADER_LEN,
GFP_KERNEL);
}
--
2.30.2
