drm/nouveau: reject attempts to submit to dead channels

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 05ec8ed..8f97534 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -702,6 +702,8 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 
        if (!chan)
                return nouveau_abi16_put(abi16, -ENOENT);
+       if (unlikely(atomic_read(&chan->killed)))
+               return nouveau_abi16_put(abi16, -ENODEV);
 
        req->vram_available = drm->gem.vram_available;
        req->gart_available = drm->gem.gart_available;