From: Andrew Morton <akpm@linux-foundation.org>
Date: Tue, 2 Feb 2010 22:45:54 +0000 (-0800)
Subject: PCI hotplug: check ioremap() return value in ibmphp_ebda.c
X-Git-Tag: firefly_0821_release~10186^2~2162
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3cf2600e7e8ec23e59c803460105f5ad7f15843a;p=firefly-linux-kernel-4.4.55.git

PCI hotplug: check ioremap() return value in ibmphp_ebda.c

commit ba02b242bbf8e4e1bc63d62e8ccec33b4e5ea132 upstream.

check ioremap() return value.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index 7d3bf31d224d..5becbdee4027 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -261,6 +261,8 @@ int __init ibmphp_access_ebda (void)
 	debug ("returned ebda segment: %x\n", ebda_seg);
 	
 	io_mem = ioremap(ebda_seg<<4, 1);
+	if (!io_mem)
+		return -ENOMEM;
 	ebda_sz = readb(io_mem);
 	iounmap(io_mem);
 	debug("ebda size: %d(KiB)\n", ebda_sz);