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authorJuergen Gross <jgross@suse.com>2020-05-11 10:42:31 +0300
committerBoris Ostrovsky <boris.ostrovsky@oracle.com>2020-05-21 20:59:15 +0300
commitc8d70a29d6bbc956013f3401f92a4431a9385a3c (patch)
tree32baf767179e14f69bc8447744d190452f95c5cc /drivers/xen
parentb9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce (diff)
downloadlinux-c8d70a29d6bbc956013f3401f92a4431a9385a3c.tar.xz
xen/pvcalls-back: test for errors when calling backend_connect()
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>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/pvcalls-back.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index cf4ce3e9358d..41a18ece029a 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -1088,7 +1088,8 @@ 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: