From: Juergen Gross <jgross@xxxxxxxx>
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@xxxxxxxxxxxxxxx
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Link: https://lore.kernel.org/r/20200511074231.19794-1-jgross@xxxxxxxx
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/xen/pvcalls-back.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -1104,7 +1104,8 @@ static void set_backend_state(struct xen
case XenbusStateInitialised:
switch (state) {
case XenbusStateConnected:
- backend_connect(dev);
+ if (backend_connect(dev))
+ return;
xenbus_switch_state(dev, XenbusStateConnected);
break;
case XenbusStateClosing:
