drm: Add drm_mode_copy()

Add a helper function to copy a display mode. Use it in
drm_mode_duplicate() and nouveau mode_fixup hooks.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 4 insertions, 10 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_dac.c b/drivers/gpu/drm/nouveau/nv50_dac.c
index a0f2bebf49e3..55c56330be6d 100644
--- a/drivers/gpu/drm/nouveau/nv50_dac.c
+++ b/drivers/gpu/drm/nouveau/nv50_dac.c
@@ -190,11 +190,8 @@ nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
         }
 
         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
-             connector->native_mode) {
-                int id = adjusted_mode->base.id;
-                *adjusted_mode = *connector->native_mode;
-                adjusted_mode->base.id = id;
-        }
+             connector->native_mode)
+                drm_mode_copy(adjusted_mode, connector->native_mode);
 
         return true;
 }
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index 9a5c2c98658c..a7844ab6a50c 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -342,11 +342,8 @@ nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
         }
 
         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
-             connector->native_mode) {
-                int id = adjusted_mode->base.id;
-                *adjusted_mode = *connector->native_mode;
-                adjusted_mode->base.id = id;
-        }
+             connector->native_mode)
+                drm_mode_copy(adjusted_mode, connector->native_mode);
 
         return true;
 }