From: Denis Kirjanov Date: Wed, 16 Jun 2010 05:16:59 +0000 (+0000) Subject: powerpc/iseries: Fix possible null pointer dereference in iSeries_pcibios_fixup_resources X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d3005fbc696781d2fd7bd5b5389a94fae5332b58;p=openwrt%2Fstaging%2Fblogic.git powerpc/iseries: Fix possible null pointer dereference in iSeries_pcibios_fixup_resources I don't know if this is a right fix for the problem since of_get_property can return NULL. Since iseries_device_information is used only for informational purpose, we can skip this function without valid HvSubBusNumber number. Signed-off-by: Denis Kirjanov Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c index 3fc2e6494b8b..ab3962b0d246 100644 --- a/arch/powerpc/platforms/iseries/pci.c +++ b/arch/powerpc/platforms/iseries/pci.c @@ -445,7 +445,11 @@ void __init iSeries_pcibios_fixup_resources(struct pci_dev *pdev) } allocate_device_bars(pdev); - iseries_device_information(pdev, bus, *sub_bus); + if (likely(sub_bus)) + iseries_device_information(pdev, bus, *sub_bus); + else + printk(KERN_ERR "PCI: Device node %s has missing or invalid " + "linux,subbus property\n", node->full_name); } /*