[PATCH] IPMI: fix occasional oops on module unload

[Corey Minyard <minyard@acm.org>]

Olaf Kirch of SuSE tracked down a problem where module unloads of
the IPMI driver would occasionally result in Oopses.  He tracked
that down to a variable that wasn't always initialized properly
in some situations.  This patch initializes that variable.
Olaf sent a patch that kzalloc-ed the data, but this structure
is large enough that I would perfer to not do that.
Thanks Olaf!

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Olaf Kirch <okir@suse.de>

Index: linux-2.6.17/drivers/char/ipmi/ipmi_msghandler.c
===================================================================
--- linux-2.6.17.orig/drivers/char/ipmi/ipmi_msghandler.c
+++ linux-2.6.17/drivers/char/ipmi/ipmi_msghandler.c
@@ -3470,6 +3470,7 @@ struct ipmi_recv_msg *ipmi_alloc_recv_ms
 
 	rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC);
 	if (rv) {
+		rv->user = NULL;
 		rv->done = free_recv_msg;
 		atomic_inc(&recv_msg_inuse_count);
 	}
-
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