From: Ben Skeggs Date: Thu, 4 Jun 2020 01:00:01 +0000 (+1000) Subject: drm/nouveau/kms/nv50-: clear SW state of disabled windows harder X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dd67cab5db7e940dad66653a04d780d53bd380d5;p=linux.git drm/nouveau/kms/nv50-: clear SW state of disabled windows harder The most innocuous result of not having done this is that we end up sending unnecessary methods when we next enable the window. However, interactions with the code handling skipping disables when an update immediately follows, and window ownership assignment, can lead to upsetting the display hardware on Volta and newer. Signed-off-by: Ben Skeggs --- diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c index e25ead56052cd..99b9b681736da 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -192,6 +192,8 @@ nv50_wndw_atomic_check_release(struct nv50_wndw *wndw, wndw->func->release(wndw, asyw, asyh); asyw->ntfy.handle = 0; asyw->sema.handle = 0; + asyw->xlut.handle = 0; + memset(asyw->image.handle, 0x00, sizeof(asyw->image.handle)); } static int @@ -519,7 +521,8 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) return PTR_ERR(ctxdma); } - asyw->image.handle[0] = ctxdma->object.handle; + if (asyw->visible) + asyw->image.handle[0] = ctxdma->object.handle; } asyw->state.fence = dma_resv_get_excl_rcu(nvbo->bo.base.resv);