[PATCH 11/34] mips: fix an off-by-one in dma_capable

Christoph Hellwig
2018-01-12T08:43:21Z

This makes it match the generic version.

Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/mips/include/asm/dma-mapping.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 0d9418d264f9..5c334ac15945 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -22,7 +22,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
if (!dev->dma_mask)
return false;

- return addr + size <= *dev->dma_mask;
+ return addr + size - 1 <= *dev->dma_mask;
}

static inline void dma_mark_clean(void *addr, size_t size) {}
--
2.14.2