From: hselasky <hselasky@FreeBSD.org>
Date: Mon, 19 Oct 2015 11:29:50 +0000 (+0000)
Subject: Fix compile warning.
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=5855be3ec6724e6451361f6ef8bd165bf9f949df;p=people%2Fjulieng%2Ffreebsd.git

Fix compile warning.

Sponsored by:	Mellanox Technologies
---

diff --git a/sys/ofed/include/linux/dma-mapping.h b/sys/ofed/include/linux/dma-mapping.h
index f9fc3cb095b1..3af3e227be01 100644
--- a/sys/ofed/include/linux/dma-mapping.h
+++ b/sys/ofed/include/linux/dma-mapping.h
@@ -87,7 +87,7 @@ struct dma_map_ops {
 	int is_phys;
 };
 
-#define	DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL << (n)) - 1))
+#define	DMA_BIT_MASK(n)	((2ULL << ((n) - 1)) - 1ULL)
 
 static inline int
 dma_supported(struct device *dev, u64 mask)