[PATCH 6/8] Revert "drm/i915: Check plane configuration properly"

[Chris Wilson]

This reverts commit 9877c37e05c8428ed80cc9652d41322ff5fa59ed.
---
 drivers/gpu/drm/i915/display/intel_display.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 99b50745b07d..1f15f910e51b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -14687,13 +14687,7 @@ static int intel_atomic_check_planes(struct intel_atomic_state *state)
 		old_active_planes = old_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
 		new_active_planes = new_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
 
-		/*
-		 * Not only the number of planes, but if the plane configuration had
-		 * changed might already mean we need to recompute min CDCLK,
-		 * because different planes might consume different amount of Dbuf bandwidth
-		 * according to formula: Bw per plane = Pixel rate * bpp * pipe/plane scale factor
-		 */
-		if (old_active_planes == new_active_planes)
+		if (hweight8(old_active_planes) == hweight8(new_active_planes))
 			continue;
 
 		ret = intel_crtc_add_planes_to_state(state, crtc, new_active_planes);
-- 
2.20.1