[media] uvcvideo: Don't fail when an unsupported format is requested
Return the default format in that case.
This issue was found by the v4l2-compliance tool.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index e5817b9..3bd9373 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -165,17 +165,18 @@
fcc[0], fcc[1], fcc[2], fcc[3],
fmt->fmt.pix.width, fmt->fmt.pix.height);
- /* Check if the hardware supports the requested format. */
+ /* Check if the hardware supports the requested format, use the default
+ * format otherwise.
+ */
for (i = 0; i < stream->nformats; ++i) {
format = &stream->format[i];
if (format->fcc == fmt->fmt.pix.pixelformat)
break;
}
- if (format == NULL || format->fcc != fmt->fmt.pix.pixelformat) {
- uvc_trace(UVC_TRACE_FORMAT, "Unsupported format 0x%08x.\n",
- fmt->fmt.pix.pixelformat);
- return -EINVAL;
+ if (i == stream->nformats) {
+ format = stream->def_format;
+ fmt->fmt.pix.pixelformat = format->fcc;
}
/* Find the closest image size. The distance between image sizes is
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 57c3076..3394c34 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -1812,6 +1812,7 @@
probe->bFormatIndex = format->index;
probe->bFrameIndex = frame->bFrameIndex;
+ stream->def_format = format;
stream->cur_format = format;
stream->cur_frame = frame;
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index af216ec..d83b6ba 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -436,6 +436,7 @@
struct uvc_format *format;
struct uvc_streaming_control ctrl;
+ struct uvc_format *def_format;
struct uvc_format *cur_format;
struct uvc_frame *cur_frame;
/* Protect access to ctrl, cur_format, cur_frame and hardware video