drm/r600: fix possible NULL pointer derefernce
Reported-by: Alexander Y. Fomichev <git.user@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r600_blit.c b/drivers/gpu/drm/radeon/r600_blit.c
index f4fb88e..ca5c29f 100644
--- a/drivers/gpu/drm/radeon/r600_blit.c
+++ b/drivers/gpu/drm/radeon/r600_blit.c
@@ -538,9 +538,12 @@
r600_prepare_blit_copy(struct drm_device *dev, struct drm_file *file_priv)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
+ int ret;
DRM_DEBUG("\n");
- r600_nomm_get_vb(dev);
+ ret = r600_nomm_get_vb(dev);
+ if (ret)
+ return ret;
dev_priv->blit_vb->file_priv = file_priv;