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