diff options
| author | Juergen Gross <jgross@suse.com> | 2020-05-11 09:42:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-17 16:40:38 +0200 |
| commit | 85831981aa0ed93d01342d06cea83ef45e184da5 (patch) | |
| tree | 17e6da79387662bc58b3b902c1a58d586703cf86 | |
| parent | 29ed45653bec27b1a677b5af551ef5525e3333d1 (diff) | |
xen/pvcalls-back: test for errors when calling backend_connect()
commit c8d70a29d6bbc956013f3401f92a4431a9385a3c upstream.
backend_connect() can fail, so switch the device to connected only if
no error occurred.
Fixes: 0a9c75c2c7258f2 ("xen/pvcalls: xenbus state handling")
Cc: stable@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200511074231.19794-1-jgross@suse.com
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/xen/pvcalls-back.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c index c57c71b7d53d..ffe9bd843922 100644 --- a/drivers/xen/pvcalls-back.c +++ b/drivers/xen/pvcalls-back.c @@ -1087,7 +1087,8 @@ static void set_backend_state(struct xenbus_device *dev, case XenbusStateInitialised: switch (state) { case XenbusStateConnected: - backend_connect(dev); + if (backend_connect(dev)) + return; xenbus_switch_state(dev, XenbusStateConnected); break; case XenbusStateClosing: |