From: Christoph Hellwig <hch@lst.de>
Date: Wed, 10 Jan 2018 16:19:47 +0100
Subject: mips: fix an off-by-one in dma_capable
Git-commit: 10dac04c79b181b255a62f60919f29acc56277ac
Patch-mainline: v4.16-rc1
References: jsc#SLE-6197 FATE#327012 bsc#1140559 LTC#173150

This makes it match the generic version.

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

--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -21,7 +21,7 @@ static inline bool dma_capable(struct de
 	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) {}