[media] media: mx2_camera: fix const cropping related warnings

A recent commit "[media] v4l2: make vidioc_s_crop const" introduced
warnings in mx2_camera. Fix them by cleanly separating writable and
read-only variables in cropping operations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c
index 9fd9d1c5b218..f36b362aff69 100644
--- a/drivers/media/platform/soc_camera/mx2_camera.c
+++ b/drivers/media/platform/soc_camera/mx2_camera.c
@@ -1099,9 +1099,10 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
 }
 
 static int mx2_camera_set_crop(struct soc_camera_device *icd,
-                                struct v4l2_crop *a)
+                                const struct v4l2_crop *a)
 {
-        struct v4l2_rect *rect = &a->c;
+        struct v4l2_crop a_writable = *a;
+        struct v4l2_rect *rect = &a_writable.c;
         struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
         struct v4l2_mbus_framefmt mf;
         int ret;