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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


             reply	other threads:[~2020-05-11  7:42 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11  7:42 Juergen Gross [this message]
2020-05-11 21:41 ` [PATCH] xen/pvcalls-back: test for errors when calling backend_connect() Stefano Stabellini
2020-05-11 21:41   ` Stefano Stabellini
2020-05-12  4:24   ` Jürgen Groß
2020-05-12  4:24     ` Jürgen Groß

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