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mtd: sh_flctl: Simplify the hardware ecc page read/write 

As the equation mtd->writesize == eccsteps * eccsize holds, we can
simplify the code. The second loop of the 1st hunk is never entered,
so we delete it.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Bastian Hecht 2012-05-14 14:14:44 +02:00 committed by David Woodhouse
parent ef4ce0bcb3
commit 50ed399cc3
1 changed files with 2 additions and 23 deletions
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25
drivers/mtd/nand/sh_flctl.c
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@ -353,35 +353,14 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
static int flctl_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
uint8_t *buf, int oob_required, int page)
{
int i, eccsize = chip->ecc.size;
int eccbytes = chip->ecc.bytes;
int eccsteps = chip->ecc.steps;
uint8_t *p = buf;
struct sh_flctl *flctl = mtd_to_flctl(mtd);
for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
chip->read_buf(mtd, p, eccsize);
for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
if (flctl->hwecc_cant_correct[i])
mtd->ecc_stats.failed++;
else
mtd->ecc_stats.corrected += 0; /* FIXME */
}
chip->read_buf(mtd, buf, mtd->writesize);
return 0;
}
static void flctl_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, int oob_required)
{
int i, eccsize = chip->ecc.size;
int eccbytes = chip->ecc.bytes;
int eccsteps = chip->ecc.steps;
const uint8_t *p = buf;
for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
chip->write_buf(mtd, p, eccsize);
chip->write_buf(mtd, buf, mtd->writesize);
}
static void execmd_read_page_sector(struct mtd_info *mtd, int page_addr)