[PATCH 4/4] drm/i915/wm: Use fb->modfier to check for tiled vs. untiled

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

There is no point in checking the bo fence tiling mode when
we can just check the fb modifier instead.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/i9xx_wm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/i9xx_wm.c b/drivers/gpu/drm/i915/display/i9xx_wm.c
index fd3b7b35f351..b262319bc83d 100644
--- a/drivers/gpu/drm/i915/display/i9xx_wm.c
+++ b/drivers/gpu/drm/i915/display/i9xx_wm.c
@@ -2295,12 +2295,11 @@ static void i9xx_update_wm(struct intel_display *display)
 
 	crtc = single_enabled_crtc(display);
 	if (display->platform.i915gm && crtc) {
-		struct drm_gem_object *obj;
-
-		obj = intel_fb_bo(crtc->base.primary->state->fb);
+		const struct drm_framebuffer *fb =
+			crtc->base.primary->state->fb;
 
 		/* self-refresh seems busted with untiled */
-		if (!intel_bo_is_tiled(obj))
+		if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
 			crtc = NULL;
 	}
 
-- 
2.49.1