Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux...

[deliverable/linux.git] / arch / arm / mm / dma-mapping.c

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 170a116d1b298c1befb81efdeaee49735362fd26..c27447653903f1134594fe309dc885285ea43bb3 100644 (file)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -171,7 +171,7 @@ static int __dma_supported(struct device *dev, u64 mask, bool warn)
         */
        if (sizeof(mask) != sizeof(dma_addr_t) &&
            mask > (dma_addr_t)~0 &&
-           dma_to_pfn(dev, ~0) < max_pfn) {
+           dma_to_pfn(dev, ~0) < max_pfn - 1) {
                if (warn) {
                        dev_warn(dev, "Coherent DMA mask %#llx is larger than dma_addr_t allows\n",
                                 mask);