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-rw-r--r--drivers/block/sunvdc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index 6b7b0d8a2..d2e9ffd22 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -947,6 +947,8 @@ static int vdc_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
print_version();
hp = mdesc_grab();
+ if (!hp)
+ return -ENODEV;
err = -ENODEV;
if ((vdev->dev_no << PARTITION_SHIFT) & ~(u64)MINORMASK) {