From: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com>
Signed-off-by: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com>
---
arch/sh/kernel/io_trapped.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index f8ce362..d8f32bf 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -15,6 +15,7 @@
#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/log2.h>
#include <asm/mmu_context.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -62,7 +63,7 @@ int register_trapped_io(struct trapped_io *tiop)
}
/* support IORESOURCE_IO _or_ MEM, not both */
- if (hweight_long(flags) != 1)
+ if (!is_power_of_2(flags))
goto bad;
n = len >> PAGE_SHIFT;
--
2.5.0
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