[Xen-changelog] Fix block backend teardown when the device didn't setup completely.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 1c515c7072969884e61aff5367c47e6641e015f3
# Parent  4146dbea47e1b093699fe45690832488742ec02d
Fix block backend teardown when the device didn't setup completely.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>

diff -r 4146dbea47e1 -r 1c515c707296 
linux-2.6-xen-sparse/drivers/xen/blkback/interface.c
--- a/linux-2.6-xen-sparse/drivers/xen/blkback/interface.c      Sat Dec  3 
12:21:52 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/interface.c      Sat Dec  3 
12:36:22 2005
@@ -123,11 +123,10 @@
        blkif_t *blkif = (blkif_t *)arg;
 
        /* Already disconnected? */
-       if (!blkif->irq)
-               return;
-
-       unbind_from_irqhandler(blkif->irq, blkif);
-       blkif->irq = 0;
+       if (blkif->irq) {
+               unbind_from_irqhandler(blkif->irq, blkif);
+               blkif->irq = 0;
+       }
 
        vbd_free(&blkif->vbd);
 

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