[PATCH v9 2/4] drm/vc4: Check for V3D before binner bo alloc

[Paul Kocialkowski]

Check that we have a V3D device registered before attempting to
allocate a binner buffer object.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx>
Reviewed-by: Eric Anholt <eric@xxxxxxxxxx>
---
 drivers/gpu/drm/vc4/vc4_v3d.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c
index 7c490106e185..c16db4665af6 100644
--- a/drivers/gpu/drm/vc4/vc4_v3d.c
+++ b/drivers/gpu/drm/vc4/vc4_v3d.c
@@ -241,6 +241,9 @@ static int bin_bo_alloc(struct vc4_dev *vc4)
 	int ret = 0;
 	struct list_head list;
 
+	if (!v3d)
+		return -ENODEV;
+
 	/* We may need to try allocating more than once to get a BO
 	 * that doesn't cross 256MB.  Track the ones we've allocated
 	 * that failed so far, so that we can free them when we've got
-- 
2.21.0