drm/nouveau/fifo/nv04: avoid ramht race against cookie insertion

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ilia Mirkin 2016-09-09 22:34:02 -04:00 committed by Ben Skeggs
parent 47a66e45d7
commit 666ca3d8f1

View File

@ -37,7 +37,10 @@ nv04_fifo_dma_object_dtor(struct nvkm_fifo_chan *base, int cookie)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
mutex_lock(&chan->fifo->base.engine.subdev.mutex);
nvkm_ramht_remove(imem->ramht, cookie);
mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
}
static int