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-rw-r--r--arch/arm/include/asm/dma-mapping.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 4ed149cbb32..22cb14ec343 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -69,7 +69,9 @@ extern void dma_cache_maint(const void *kaddr, size_t size, int rw);
*/
static inline int dma_supported(struct device *dev, u64 mask)
{
- return dev->dma_mask && *dev->dma_mask != 0;
+ if (mask < ISA_DMA_THRESHOLD)
+ return 0;
+ return 1;
}
static inline int dma_set_mask(struct device *dev, u64 dma_mask)