Commit b5096566 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nv50/fifo: prevent races between clients updating playlists 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 9426eedb

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