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[Xen-changelog] Prevent vbd frontend from oopsing if the underlying devi

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Subject:	[Xen-changelog] Prevent vbd frontend from oopsing if the underlying device doesn't exist.
From:	Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Thu, 29 Dec 2005 17:12:07 +0000
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# HG changeset patch
# User vhanquez@xxxxxxxxxxxxxxxxxxxxxxx
# Node ID 7c1f2e20123a61341c0355f97437f916e1b54095
# Parent  5fa0c70663f1d3859656d3fe4b4e214de59cb7d1
Prevent vbd frontend from oopsing if the underlying device doesn't exist.

Signed-off-by: Horms <horms@xxxxxxxxxxxx>
Signed-off-by: Vincent Hanquez <vincent@xxxxxxxxxxxxx>

diff -r 5fa0c70663f1 -r 7c1f2e20123a 
linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c
--- a/linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c      Fri Dec 23 
17:28:33 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/blkfront/blkfront.c      Tue Dec 27 
10:40:33 2005
@@ -331,7 +331,12 @@
                return;
        }
 
-        xlvbd_add(sectors, info->vdevice, binfo, sector_size, info);
+       err = xlvbd_add(sectors, info->vdevice, binfo, sector_size, info);
+       if (err) {
+               xenbus_dev_fatal(info->xbdev, err, "xlvbd_add at %s",
+                                info->xbdev->otherend);
+               return;
+       }
 
        (void)xenbus_switch_state(info->xbdev, NULL, XenbusStateConnected); 
 

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