drm_mode_equal
if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) {
if (!drm_mode_equal(set->mode, &set->crtc->mode)) {
if (!drm_mode_equal(modes[o], modes[n]))
EXPORT_SYMBOL(drm_mode_equal);
if (!drm_mode_equal(pmode, mode))
bool drm_mode_equal(const struct drm_display_mode *mode1,