This is a note to let you know that I've just added the patch titled
virtio: release virtio index when fail to device_register
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
virtio-release-virtio-index-when-fail-to-device_register.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e60ea67bb60459b95a50a156296041a13e0e380e Mon Sep 17 00:00:00 2001
From: weiping zhang <zwp10758@xxxxxxxxx>
Date: Wed, 29 Nov 2017 09:23:01 +0800
Subject: virtio: release virtio index when fail to device_register
From: weiping zhang <zwp10758@xxxxxxxxx>
commit e60ea67bb60459b95a50a156296041a13e0e380e upstream.
index can be reused by other virtio device.
Signed-off-by: weiping zhang <zhangweiping@xxxxxxxxxxxxxxx>
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/virtio/virtio.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -323,6 +323,8 @@ int register_virtio_device(struct virtio
/* device_register() causes the bus infrastructure to look for a
* matching driver. */
err = device_register(&dev->dev);
+ if (err)
+ ida_simple_remove(&virtio_index_ida, dev->index);
out:
if (err)
add_status(dev, VIRTIO_CONFIG_S_FAILED);
Patches currently in stable-queue which might be from zwp10758@xxxxxxxxx are
queue-4.9/virtio-release-virtio-index-when-fail-to-device_register.patch