drivers/char/mem.c: clean up the code
authorChangli Gao <xiaosuo@gmail.com>
Wed, 23 Mar 2011 23:42:58 +0000 (16:42 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 24 Mar 2011 02:46:40 +0000 (19:46 -0700)
Reduce the lines of code and simplify the logic.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/char/mem.c

index 1256454b2d4364f7fa6ad95b661d30ad62b673b4..436a990179988a06fb10e18884cb9db56371fdb5 100644 (file)
@@ -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)