NULL return of kzalloc_node should be handled
Signed-off-by: Zhouyi Zhou <yizhouz...@ict.ac.cn>
---
arch/powerpc/platforms/pseries/iommu.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/iommu.c
b/arch/powerpc/platforms/pseries/iommu.c
index 33b552f..593cd3d 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -613,7 +613,11 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus)
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
pci->phb->node);
-
+ if (!tbl) {
+ pr_debug(" out of memory, can't create iommu_table !\n");
+ return;
+ }
+
iommu_table_setparms(pci->phb, dn, tbl);
pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
iommu_register_group(tbl, pci_domain_nr(bus), 0);
@@ -659,6 +663,10 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus
*bus)
if (!ppci->iommu_table) {
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
ppci->phb->node);
+ if (!tbl) {
+ pr_debug(" out of memory, can't create iommu_table
!\n");
+ return;
+ }
iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node);
iommu_register_group(tbl, pci_domain_nr(bus), 0);
@@ -686,6 +694,11 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
pr_debug(" --> first child, no bridge. Allocating iommu
table.\n");
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
phb->node);
+ if (!tbl) {
+ pr_debug(" out of memory, can't create iommu_table
!\n");
+ return;
+ }
+
iommu_table_setparms(phb, dn, tbl);
PCI_DN(dn)->iommu_table = iommu_init_table(tbl, phb->node);
iommu_register_group(tbl, pci_domain_nr(phb->bus), 0);
@@ -1102,6 +1116,10 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev
*dev)
if (!pci->iommu_table) {
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
pci->phb->node);
+ if (!tbl) {
+ pr_debug(" out of memory, can't create iommu_table
!\n");
+ return;
+ }
iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
iommu_register_group(tbl, pci_domain_nr(pci->phb->bus), 0);
--
1.7.10.4
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