From: Hannes Hering <hannes.hering@gmx.de>
Date: Fri, 5 Sep 2008 14:36:26 +0000 (+0200)
Subject: ehea: Fix DLPAR memory handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=70666c71957b62c8e9ea5c0d999a4bfd214c80d2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c
index 140f05baafd8..db8a9257e680 100644
--- a/drivers/net/ehea/ehea_qmr.c
+++ b/drivers/net/ehea/ehea_qmr.c
@@ -595,7 +595,8 @@ static int ehea_create_busmap_callback(unsigned long pfn,
 	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;