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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>
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1 changed files with 2 additions and 2 deletions
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@ -33,6 +33,7 @@
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#include <linux/moduleparam.h>
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#include <linux/stringify.h>
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#include <linux/stat.h>
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#include <linux/log2.h>
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#include "ubi.h"
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/* Maximum length of the 'mtd=' parameter */
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@ -422,8 +423,7 @@ static int io_init(struct ubi_device *ubi)
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ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft;
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/* Make sure minimal I/O unit is power of 2 */
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if (ubi->min_io_size == 0 ||
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(ubi->min_io_size & (ubi->min_io_size - 1))) {
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if (!is_power_of_2(ubi->min_io_size)) {
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ubi_err("bad min. I/O unit");
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return -EINVAL;
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}
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