xenbus: don't free other end details too early
authorJan Beulich <JBeulich@suse.com>
Mon, 5 Mar 2012 17:11:31 +0000 (17:11 +0000)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 13 Mar 2012 18:15:29 +0000 (14:15 -0400)
The individual drivers' remove functions could legitimately attempt to
access this information (for logging messages if nothing else). Note
that I did not in fact observe a problem anywhere, but I came across
this while looking into the reasons for what turned out to need the
fix at https://lkml.org/lkml/2012/3/5/336 to vsprintf().

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
drivers/xen/xenbus/xenbus_probe.c

index 3864967..b793723 100644 (file)
@@ -257,11 +257,12 @@ int xenbus_dev_remove(struct device *_dev)
        DPRINTK("%s", dev->nodename);
 
        free_otherend_watch(dev);
-       free_otherend_details(dev);
 
        if (drv->remove)
                drv->remove(dev);
 
+       free_otherend_details(dev);
+
        xenbus_switch_state(dev, XenbusStateClosed);
        return 0;
 }