diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2021-10-18 10:20:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-21 13:53:31 +0300 |
| commit | 859c675d84d488e2f9b515c713ea890c9f045f0c (patch) | |
| tree | ec98904ddbbbcbfc9f9a9bd23d8e8c01ae24543c /drivers/usb/gadget | |
| parent | fc153aba3ef371d0d76eb88230ed4e0dee5b38f2 (diff) | |
| download | linux-859c675d84d488e2f9b515c713ea890c9f045f0c.tar.xz | |
usb: gadget: uvc: consistently use define for headerlen
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@ideasonboard.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20211018072059.11465-1-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/function/uvc.h | 4 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/uvc_video.c | 6 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/uvc_video.h | 2 |
3 files changed, 6 insertions, 6 deletions
diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index 9d5f17b551bb..b05de36e2c60 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -68,6 +68,8 @@ extern unsigned int uvc_gadget_trace_param; #define UVC_MAX_REQUEST_SIZE 64 #define UVC_MAX_EVENTS 4 +#define UVCG_REQUEST_HEADER_LEN 2 + /* ------------------------------------------------------------------------ * Structures */ @@ -76,7 +78,7 @@ struct uvc_request { u8 *req_buffer; struct uvc_video *video; struct sg_table sgt; - u8 header[2]; + u8 header[UVCG_REQUEST_HEADER_LEN]; }; struct uvc_video { diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index b4a763e5f70e..f3e97a4fc030 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -33,7 +33,7 @@ uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, if (buf->bytesused - video->queue.buf_used <= len - UVCG_REQUEST_HEADER_LEN) data[1] |= UVC_STREAM_EOF; - return 2; + return UVCG_REQUEST_HEADER_LEN; } static int @@ -302,8 +302,8 @@ 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, - GFP_KERNEL); + DIV_ROUND_UP(req_size - UVCG_REQUEST_HEADER_LEN, + PAGE_SIZE) + 2, GFP_KERNEL); } video->req_size = req_size; diff --git a/drivers/usb/gadget/function/uvc_video.h b/drivers/usb/gadget/function/uvc_video.h index 9bf19475f6f9..03adeefa343b 100644 --- a/drivers/usb/gadget/function/uvc_video.h +++ b/drivers/usb/gadget/function/uvc_video.h @@ -12,8 +12,6 @@ #ifndef __UVC_VIDEO_H__ #define __UVC_VIDEO_H__ -#define UVCG_REQUEST_HEADER_LEN 2 - struct uvc_video; int uvcg_video_enable(struct uvc_video *video, int enable); |