drm/kms: fix fb_changed = true else statement

a patch from Roel was wrong, fix this properly, really
if the fb ptrs are different fb changed shuold be true.

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 7d0f00a..f2aaf39 100644 (file)
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -836,11 +836,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
                        mode_changed = true;
                } else if (set->fb == NULL) {
                        mode_changed = true;
-               } else if ((set->fb->bits_per_pixel !=
-                        set->crtc->fb->bits_per_pixel) ||
-                        set->fb->depth != set->crtc->fb->depth)
-                       fb_changed = true;
-               else
+               } else
                        fb_changed = true;
        }