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| author | Denis Kirjanov <dkirjanov@hera.kernel.org> | 2010-06-16 05:16:59 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-08 18:11:43 +1000 |
| commit | d3005fbc696781d2fd7bd5b5389a94fae5332b58 (patch) | |
| tree | 1369363ca618ead993a57e2dd5aa5e67bc7bf251 | |
| parent | 33ad5e4b6cab3ad8cf3afda49b66393f1833150e (diff) | |
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 <dkirjanov@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/platforms/iseries/pci.c | 6 |
1 files changed, 5 insertions, 1 deletions
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); } /* |