pci_dma_dev_setup_pSeries() should use of_get_next_parent() to safely
iterate through the parent nodes.
Signed-off-by: Michael Ellerman <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/pseries/iommu.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/iommu.c
b/arch/powerpc/platforms/pseries/iommu.c
index e2b325d..5e9430e 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -472,14 +472,17 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
* an already allocated iommu table is found and use that.
*/
+ dn = of_node_get(dn);
while (dn && PCI_DN(dn) && PCI_DN(dn)->iommu_table == NULL)
- dn = dn->parent;
+ dn = of_get_next_parent(dn);
if (dn && PCI_DN(dn))
dev->dev.archdata.dma_data = PCI_DN(dn)->iommu_table;
else
printk(KERN_WARNING "iommu: Device %s has no iommu table\n",
pci_name(dev));
+
+ of_node_put(dn);
}
static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
--
1.5.2.rc1.1884.g59b20
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