[PATCH 5/8] virtio: 9p: Reset the device before releasing its queues

[Bin Meng <bin.meng@processmission.com>]

The 9P remove callback frees virtqueues while the device can still
access them, then resets the device. Outstanding requests can therefore
race with freeing the ring memory.

Use the common reset helper, which waits for the device to stop before
releasing its queues.

Signed-off-by: Bin Meng <bin.meng@processmission.com>
---

 drivers/virtio/virtio_9p.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/virtio/virtio_9p.c b/drivers/virtio/virtio_9p.c
index fb2eb0c7223..d0fb39a1de5 100644
--- a/drivers/virtio/virtio_9p.c
+++ b/drivers/virtio/virtio_9p.c
@@ -102,19 +102,13 @@ static int virtio_9p_probe(struct udevice *dev)
 	return 0;
 }
 
-static int virtio_9p_remove(struct udevice *dev)
-{
-	virtio_del_vqs(dev);
-	return virtio_reset(dev);
-}
-
 U_BOOT_DRIVER(virtio_9p) = {
 	.name       = VIRTIO_9P_DRV_NAME,
 	.id         = UCLASS_9P,
 	.ops        = &virtio_9p_ops,
 	.bind       = virtio_9p_bind,
 	.probe      = virtio_9p_probe,
-	.remove     = virtio_9p_remove,
+	.remove     = virtio_reset,
 	.priv_auto  = sizeof(struct virtio_9p_priv),
 	.flags      = DM_FLAG_ACTIVE_DMA,
 };
-- 
2.53.0