drm/atomic: Consitfy mode parameter to drm_atomic_set_mode_for_crtc()

drm_atomic_set_mode_for_crtc() doesn't modify the passed mode, so let's
make it const.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170518193837.393-1-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index e1637011e18a..77dcef00998c 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -328,7 +328,7 @@ static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
  * Zero on success, error code on failure. Cannot return -EDEADLK.
  */
 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
         struct drm_mode_modeinfo umode;
 
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 8645dcdef031..0196f264a418 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -520,7 +520,7 @@ __drm_atomic_get_current_plane_state(struct drm_atomic_state *state,
 
 int __must_check
 drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
-                             struct drm_display_mode *mode);
+                             const struct drm_display_mode *mode);
 int __must_check
 drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
                                   struct drm_property_blob *blob);