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 140f05b..db8a925 100644 (file)
--- 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;