netdev - [PATCH 1/2] ehea: Fix DLPAR memory handling

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Message-Id: <200809051636.26545.hannes.hering@gmx.de>
Date:	Fri, 5 Sep 2008 16:36:26 +0200
From:	Hannes Hering <hannes.hering@....de>
To:	jeff@...zik.org
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org, ossrosch@...ux.vnet.ibm.com,
	ossthema@...ibm.com, raisch@...ibm.com, themann@...ibm.com,
	osstklei@...ibm.com
Subject: [PATCH 1/2] ehea: Fix DLPAR memory handling

The ehea busmap must be allocated only once in the first of many calls of the
ehea_create_busmap_callback.

Signed-off-by: Hannes Hering <hering2@...ibm.com>
---

diff -Nurp -X dontdiff linux-2.6.27-rc5/drivers/net/ehea/ehea_qmr.c patched_kernel/drivers/net/ehea/ehea_qmr.c
--- linux-2.6.27-rc5/drivers/net/ehea/ehea_qmr.c	2008-08-29 00:52:02.000000000 +0200
+++ patched_kernel/drivers/net/ehea/ehea_qmr.c	2008-09-05 15:31:30.000000000 +0200
@@ -595,7 +595,8 @@ static int ehea_create_busmap_callback(u
 	end_section = start_section + ((nr_pages * PAGE_SIZE) / EHEA_SECTSIZE);
 	mr_len = *(unsigned long *)arg;
 
-	ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
+	if (!ehea_bmap)
+		ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
 	if (!ehea_bmap)
 		return -ENOMEM;
 
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