powerpc: kmalloc failure ignored in vio_build_iommu_table()
Prevent NULL dereference if kmalloc() fails.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index bc7b41e..1b4f674 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1054,6 +1054,8 @@
return NULL;
tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
+ if (tbl == NULL)
+ return NULL;
of_parse_dma_window(dev->dev.archdata.of_node, dma_window,
&tbl->it_index, &offset, &size);