drm/nv50/fifo: prevent races between clients updating playlists (b5096566) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,7 @@ nv50_fifo_playlist_update(struct nv50_fifo_priv *priv)
		struct nouveau_gpuobj *cur;
		int i, p;

		mutex_lock(&nv_subdev(priv)->mutex);
		cur = priv->playlist[priv->cur_playlist];
		priv->cur_playlist = !priv->cur_playlist;

		@@ -60,6 +61,7 @@ nv50_fifo_playlist_update(struct nv50_fifo_priv *priv)
		nv_wr32(priv, 0x0032f4, cur->addr >> 12);
		nv_wr32(priv, 0x0032ec, p);
		nv_wr32(priv, 0x002500, 0x00000101);
		mutex_unlock(&nv_subdev(priv)->mutex);
		}

		static int