linux-kernel - [PATCH] mem: clean up the code

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Date:	Mon, 21 Feb 2011 11:56:08 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Changli Gao <xiaosuo@...il.com>
Subject: [PATCH] mem: clean up the code

Reduce the lines of code and simply the logic.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
---
 drivers/char/mem.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1256454..436a990 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -47,10 +47,7 @@ static inline unsigned long size_inside_page(unsigned long start,
 #ifndef ARCH_HAS_VALID_PHYS_ADDR_RANGE
 static inline int valid_phys_addr_range(unsigned long addr, size_t count)
 {
-	if (addr + count > __pa(high_memory))
-		return 0;
-
-	return 1;
+	return addr + count <= __pa(high_memory);
 }
 
 static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
--
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