mtd: alauda: Use hweight8

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 1 insertions, 10 deletions

diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c
index 6d9649159a18..2d6773281fd9 100644
--- a/drivers/mtd/nand/alauda.c
+++ b/drivers/mtd/nand/alauda.c
@@ -372,15 +372,6 @@ static int alauda_read_oob(struct mtd_info *mtd, loff_t from, void *oob)
         return __alauda_read_page(mtd, from, ignore_buf, oob);
 }
 
-static int popcount8(u8 c)
-{
-        int ret = 0;
-
-        for ( ; c; c>>=1)
-                ret += c & 1;
-        return ret;
-}
-
 static int alauda_isbad(struct mtd_info *mtd, loff_t ofs)
 {
         u8 oob[16];
@@ -391,7 +382,7 @@ static int alauda_isbad(struct mtd_info *mtd, loff_t ofs)
                 return err;
 
         /* A block is marked bad if two or more bits are zero */
-        return popcount8(oob[5]) >= 7 ? 0 : 1;
+        return hweight8(oob[5]) >= 7 ? 0 : 1;
 }
 
 static int alauda_bounce_read(struct mtd_info *mtd, loff_t from, size_t len,