drm/nouveau/kms/nv50: skip core channel cursor update on position-onl…

…y changes The DRM core used to only call prepare_fb/cleanup_fb() when a plane's framebuffer changed, which achieved the desired effect. It's apparently now up to the driver to decide on its own. Signed-off-by: Ben Skeggs <[email protected]> Cc: [email protected] [4.11+]
niw · May 11, 2017 · e6db957 · e6db957
1 parent 36601c2
commit e6db957
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1119,9 +1119,13 @@ static void
 nv50_curs_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
 		  struct nv50_wndw_atom *asyw)
 {
-	asyh->curs.handle = nv50_disp(wndw->plane.dev)->mast.base.vram.handle;
-	asyh->curs.offset = asyw->image.offset;
-	asyh->set.curs = asyh->curs.visible;
+	u32 handle = nv50_disp(wndw->plane.dev)->mast.base.vram.handle;
+	u32 offset = asyw->image.offset;
+	if (asyh->curs.handle != handle || asyh->curs.offset != offset) {
+		asyh->curs.handle = handle;
+		asyh->curs.offset = offset;
+		asyh->set.curs = asyh->curs.visible;
+	}
 }
 
 static void