UBI: avoid unnecessary division operations

UBI already checks that @min io size is the power of 2 at io_init.
It is save to use bit operations then.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index a70d58823f8d..51508832566d 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -397,8 +397,8 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
                 return -EROFS;
 
         if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
-            offset + len > vol->usable_leb_size || offset % ubi->min_io_size ||
-            len % ubi->min_io_size)
+            offset + len > vol->usable_leb_size ||
+            offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
                 return -EINVAL;
 
         if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
@@ -447,7 +447,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
                 return -EROFS;
 
         if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
-            len > vol->usable_leb_size || len % ubi->min_io_size)
+            len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
                 return -EINVAL;
 
         if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&