From: Ben Skeggs Date: Mon, 1 May 2017 06:53:40 +0000 (+1000) Subject: drm/nouveau/kms/nv50: skip core channel cursor update on position-only changes X-Git-Tag: v4.12-rc1~9^2~1^2~7 X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=e6db95799b1b870aae15682a6d0898df9e9dfb38;p=karo-tx-linux.git drm/nouveau/kms/nv50: skip core channel cursor update on position-only 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 Cc: stable@vger.kernel.org [4.11+] --- diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 84b9bb43d93a..fcec2aba9ad7 100644 --- 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