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-rw-r--r--arch/x86/kernel/pci-dma_32.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index f134de3833a..d2f70744a93 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -91,6 +91,9 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
if (dma_mask == 0)
dma_mask = DMA_32BIT_MASK;
+ if (dev->dma_mask == NULL)
+ return NULL;
+
/* Don't invoke OOM killer */
gfp |= __GFP_NORETRY;
again: