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OpenCloudOS-Kernel
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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>
This commit is contained in:
Akinobu Mita 2009-11-13 16:02:22 +09:00 committed by David Woodhouse
parent e670e41ae0
commit 54c69cc250
1 changed files with 1 additions and 10 deletions
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11
drivers/mtd/nand/alauda.c
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@ -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); 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) static int alauda_isbad(struct mtd_info *mtd, loff_t ofs)
{ {
u8 oob[16]; u8 oob[16];
@ -391,7 +382,7 @@ static int alauda_isbad(struct mtd_info *mtd, loff_t ofs)
return err; return err;
/* A block is marked bad if two or more bits are zero */ /* 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, static int alauda_bounce_read(struct mtd_info *mtd, loff_t from, size_t len,