[PATCH 7/6] omap4iss: fix sparse warning

[Hans Verkuil]

drivers/staging/media/omap4iss/iss.c:141:15: warning: unknown expression (4 0)
drivers/staging/media/omap4iss/iss.c:141:15: warning: unknown expression (4 0)
drivers/staging/media/omap4iss/iss.c:141:15: warning: unknown expression (4 0)
drivers/staging/media/omap4iss/iss.c:141:15: warning: unknown expression (4 0)

Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
---
Same fix as for omap3isp. I discovered that staging drivers weren't built by the
daily build, so I never noticed these warnings.
---
diff --git a/drivers/staging/media/omap4iss/iss.c 
b/drivers/staging/media/omap4iss/iss.c
index c8be1db532ab..fd702947cdb8 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -124,6 +124,7 @@ int omap4iss_get_external_info(struct iss_pipeline *pipe,
 {
        struct iss_device *iss =
                container_of(pipe, struct iss_video, pipe)->iss;
+       struct v4l2_subdev *sd;
        struct v4l2_subdev_format fmt;
        struct v4l2_ctrl *ctrl;
        int ret;
@@ -138,8 +139,8 @@ int omap4iss_get_external_info(struct iss_pipeline *pipe,

        fmt.pad = link->source->index;
        fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
-       ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(link->sink->entity),
-                              pad, get_fmt, NULL, &fmt);
+       sd = media_entity_to_v4l2_subdev(link->sink->entity);
+       ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
        if (ret < 0)
                return -EPIPE;