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-rw-r--r--net/9p/trans_virtio.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index daa749c..d8e376a 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -524,6 +524,12 @@ static int p9_virtio_probe(struct virtio_device *vdev)
int err;
struct virtio_chan *chan;
+ if (!vdev->config->get) {
+ dev_err(&vdev->dev, "%s failure: config access disabled\n",
+ __func__);
+ return -EINVAL;
+ }
+
chan = kmalloc(sizeof(struct virtio_chan), GFP_KERNEL);
if (!chan) {
pr_err("Failed to allocate virtio 9P channel\n");
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