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[POWERPC] Extra sanity check in EEH code

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Don't dereference a device node that isn't there.  A "shouldn't
happen" case, but someone ran into it with a possibly misconfigured
device tree.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Nathan Lynch 2006-06-20 18:01:58 +10:00 committed by Paul Mackerras
parent d3c58fb177
commit ccba051c37
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/platforms/pseries/eeh_cache.c
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@ -304,6 +304,8 @@ void __init pci_addr_cache_build(void)
pci_addr_cache_insert_device(dev);
dn = pci_device_to_OF_node(dev);
if (!dn)
continue;
pci_dev_get (dev); /* matching put is in eeh_remove_device() */
PCI_DN(dn)->pcidev = dev;
}