linux-kernel - [RFC PATCH 14/15] virtiofs: Handle virtio_device

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Date:   Mon, 17 May 2021 17:34:27 +0800
From:   Xie Yongji <xieyongji@...edance.com>
To:     mst@...hat.com, jasowang@...hat.com, stefanha@...hat.com
Cc:     amit@...nel.org, arei.gonglei@...wei.com, airlied@...ux.ie,
        kraxel@...hat.com, jean-philippe@...aro.org, ohad@...ery.com,
        bjorn.andersson@...aro.org, david@...hat.com, vgoyal@...hat.com,
        miklos@...redi.hu, lucho@...kov.net, asmadeus@...ewreck.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: [RFC PATCH 14/15] virtiofs: Handle virtio_device_ready() failure

Now virtio_device_ready() will return error if we get
invalid status. Let's handle this case on probe.

Signed-off-by: Xie Yongji <xieyongji@...edance.com>
---
 fs/fuse/virtio_fs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index e61c94eaa20f..ade0dc42ebfd 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -883,7 +883,9 @@ static int virtio_fs_probe(struct virtio_device *vdev)
 	/* Bring the device online in case the filesystem is mounted and
 	 * requests need to be sent before we return.
 	 */
-	virtio_device_ready(vdev);
+	ret = virtio_device_ready(vdev);
+	if (ret < 0)
+		goto out_vqs;
 
 	ret = virtio_fs_add_instance(fs);
 	if (ret < 0)
-- 
2.11.0