media: rkisp1: Zero v4l2_subdev_format fields in when validating links

[ Upstream commit c53e3a049f35978a150526671587fd46b1ae7ca1 ]

The local sd_fmt variable in rkisp1_capture_link_validate() has
uninitialized fields, which causes random failures when calling the
subdev .get_fmt() operation. Fix it by initializing the variable when
declaring it, which zeros all other fields.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c
index 0c934ca5adaa3546f767eec768b270151bb7d098..8936f5a81680c89e445b560eb7f0a03708d0bc3b 100644 (file)
--- a/drivers/staging/media/rkisp1/rkisp1-capture.c
+++ b/drivers/staging/media/rkisp1/rkisp1-capture.c
@@ -1258,11 +1258,12 @@ static int rkisp1_capture_link_validate(struct media_link *link)
        struct rkisp1_capture *cap = video_get_drvdata(vdev);
        const struct rkisp1_capture_fmt_cfg *fmt =
                rkisp1_find_fmt_cfg(cap, cap->pix.fmt.pixelformat);
-       struct v4l2_subdev_format sd_fmt;
+       struct v4l2_subdev_format sd_fmt = {
+               .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+               .pad = link->source->index,
+       };
        int ret;
 
-       sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
-       sd_fmt.pad = link->source->index;
        ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
        if (ret)
                return ret;