[PATCH 7/16] UML - Fix a shutdown hang caused by a failed ifconfig

[Jeff Dike]

The network driver wasn't checking that the host side of an interface had
been successfully opened before trying to close it at shuwtdown.

Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>

Index: linux-2.6.11/arch/um/drivers/net_kern.c
===================================================================
--- linux-2.6.11.orig/arch/um/drivers/net_kern.c	2005-03-05 12:07:28.000000000 -0500
+++ linux-2.6.11/arch/um/drivers/net_kern.c	2005-03-05 12:12:13.000000000 -0500
@@ -728,7 +728,8 @@
 
 	list_for_each(ele, &opened){
 		lp = list_entry(ele, struct uml_net_private, list);
-		if(lp->close != NULL) (*lp->close)(lp->fd, &lp->user);
+		if((lp->close != NULL) && (lp->fd >= 0))
+			(*lp->close)(lp->fd, &lp->user);
 		if(lp->remove != NULL) (*lp->remove)(&lp->user);
 	}
 }

-
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