From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Stefano Stabellini <sstabellini@kernel.org>,
stable@vger.kernel.org
Subject: [PATCH] xen/pvcalls-back: test for errors when calling backend_connect()
Date: Mon, 11 May 2020 09:42:31 +0200 [thread overview]
Message-ID: <20200511074231.19794-1-jgross@suse.com> (raw)
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>
---
drivers/xen/pvcalls-back.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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:
--
2.26.1
next reply other threads:[~2020-05-11 7:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 7:42 Juergen Gross [this message]
2020-05-11 21:41 ` Stefano Stabellini
2020-05-12 4:24 ` Jürgen Groß
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