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UBI: use is_power_of_2() 

Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: Vignesh Babu <vignesh.babu@wipro.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Vignesh Babu 2007-06-12 10:31:05 +05:30 committed by Artem Bityutskiy
parent d7f0c4dc31
commit 7753f1692f
1 changed files with 2 additions and 2 deletions
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4
drivers/mtd/ubi/build.c
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@ -33,6 +33,7 @@
#include <linux/moduleparam.h> #include <linux/moduleparam.h>
#include <linux/stringify.h> #include <linux/stringify.h>
#include <linux/stat.h> #include <linux/stat.h>
#include <linux/log2.h>
#include "ubi.h" #include "ubi.h"
/* Maximum length of the 'mtd=' parameter */ /* Maximum length of the 'mtd=' parameter */
@ -422,8 +423,7 @@ static int io_init(struct ubi_device *ubi)
ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft; ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft;
/* Make sure minimal I/O unit is power of 2 */ /* Make sure minimal I/O unit is power of 2 */
if (ubi->min_io_size == 0 || if (!is_power_of_2(ubi->min_io_size)) {
(ubi->min_io_size & (ubi->min_io_size - 1))) {
ubi_err("bad min. I/O unit"); ubi_err("bad min. I/O unit");
return -EINVAL; return -EINVAL;
} }