drm/i915: check fb->pixel_format instead of bits_per_pixel

We've mostly switched over to the new more flexible schema, but
there's one check left in the modeset code.

Motivated by a question from Ville whether there's really no way an
unsupported pixel_format can escape into our platform update_plane
callbacks.

v2: Ville noticed that the fb->depth check is redudant when we already
check fb->pixel_format.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 84bd8d36ce02..3f3a3dc7b4da 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7954,10 +7954,8 @@ intel_set_config_compute_mode_changes(struct drm_mode_set *set,
                         config->mode_changed = true;
                 } else if (set->fb == NULL) {
                         config->mode_changed = true;
-                } else if (set->fb->depth != set->crtc->fb->depth) {
-                        config->mode_changed = true;
-                } else if (set->fb->bits_per_pixel !=
-                           set->crtc->fb->bits_per_pixel) {
+                } else if (set->fb->pixel_format !=
+                           set->crtc->fb->pixel_format) {
                         config->mode_changed = true;
                 } else
                         config->fb_changed = true;