linux-kernel - [016/145] PCI hotplug: check ioremap() return value in ibmphp

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Date:	Fri, 12 Mar 2010 16:25:49 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: [016/145] PCI hotplug: check ioremap() return value in ibmphp_ebda.c

2.6.32-stable review patch.  If anyone has any objections, please let me know.

----------------
From: Andrew Morton <akpm@...ux-foundation.org>

commit ba02b242bbf8e4e1bc63d62e8ccec33b4e5ea132 upstream.

check ioremap() return value.

Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@...tuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/pci/hotplug/ibmphp_ebda.c |    2 ++
 1 file changed, 2 insertions(+)

--- 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);


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