PCI hotplug: check ioremap() return value in ibmphp_ebda.c
check ioremap() return value. Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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@ -261,6 +261,8 @@ int __init ibmphp_access_ebda (void)
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debug ("returned ebda segment: %x\n", ebda_seg);
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io_mem = ioremap(ebda_seg<<4, 1);
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if (!io_mem)
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return -ENOMEM;
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ebda_sz = readb(io_mem);
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iounmap(io_mem);
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debug("ebda size: %d(KiB)\n", ebda_sz);
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