[RESEND PATCH 2/3] drm: Perform a full mode set when the pixel format changed

[Laurent Pinchart]

From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

Test whether the pixel format changes in the mode set handler, and
perform a full mode set instead of a mode set base if it does.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/gpu/drm/drm_crtc_helper.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 7b2d378..e974f93 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -648,6 +648,9 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 		} else if (set->fb->bits_per_pixel !=
 			   set->crtc->fb->bits_per_pixel) {
 			mode_changed = true;
+		} else if (set->fb->pixel_format !=
+			   set->crtc->fb->pixel_format) {
+			mode_changed = true;
 		} else
 			fb_changed = true;
 	}
-- 
1.8.1.5