drivers/char/mem.c: clean up the code

Reduce the lines of code and simplify the logic.

Signed-off-by: Changli Gao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1256454b2d4364f7fa6ad95b661d30ad62b673b4..436a990179988a06fb10e18884cb9db56371fdb5 100644 (file)
--- 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)