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authorYueHaibing <yuehaibing@huawei.com>2019-04-30 17:39:33 +0300
committerDominique Martinet <dominique.martinet@cea.fr>2019-05-15 16:00:07 +0300
commit80a316ff16276b36d0392a8f8b2f63259857ae98 (patch)
tree27b903a120bca18d3994228e06ab2ee13b405044 /net/9p
parentd4548543fc4ece56c6f04b8586f435fb4fd84c20 (diff)
downloadlinux-80a316ff16276b36d0392a8f8b2f63259857ae98.tar.xz
9p/xen: Add cleanup path in p9_trans_xen_init
If xenbus_register_frontend() fails in p9_trans_xen_init, we should call v9fs_unregister_trans() to do cleanup. Link: http://lkml.kernel.org/r/20190430143933.19368-1-yuehaibing@huawei.com Cc: stable@vger.kernel.org Fixes: 868eb122739a ("xen/9pfs: introduce Xen 9pfs transport driver") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Diffstat (limited to 'net/9p')
-rw-r--r--net/9p/trans_xen.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c
index e2fbf3677b9b..9daab0dd833b 100644
--- a/net/9p/trans_xen.c
+++ b/net/9p/trans_xen.c
@@ -530,13 +530,19 @@ static struct xenbus_driver xen_9pfs_front_driver = {
static int p9_trans_xen_init(void)
{
+ int rc;
+
if (!xen_domain())
return -ENODEV;
pr_info("Initialising Xen transport for 9pfs\n");
v9fs_register_trans(&p9_xen_trans);
- return xenbus_register_frontend(&xen_9pfs_front_driver);
+ rc = xenbus_register_frontend(&xen_9pfs_front_driver);
+ if (rc)
+ v9fs_unregister_trans(&p9_xen_trans);
+
+ return rc;
}
module_init(p9_trans_xen_init);