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mtd: nand: pxa3xx: Clean pxa_ecc_init() error handling

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Let's make pxa_ecc_init() return a negative errno on error or zero
if succesful, which is standard kernel practice. Also, report the
selected ECC strength and step size, which is important information.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Ezequiel Garcia 2014-05-14 14:58:07 -03:00 committed by Brian Norris
parent 67a9ad9b8a
commit eee0166d8e
1 changed files with 10 additions and 11 deletions
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21
drivers/mtd/nand/pxa3xx_nand.c
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@ -1354,7 +1354,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
ecc->mode = NAND_ECC_HW;
ecc->size = 512;
ecc->strength = 1;
return 1;
} else if (strength == 1 && ecc_stepsize == 512 && page_size == 512) {
info->chunk_size = 512;
@ -1363,7 +1362,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
ecc->mode = NAND_ECC_HW;
ecc->size = 512;
ecc->strength = 1;
return 1;
/*
* Required ECC: 4-bit correction per 512 bytes
@ -1378,7 +1376,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
ecc->size = info->chunk_size;
ecc->layout = &ecc_layout_2KB_bch4bit;
ecc->strength = 16;
return 1;
} else if (strength == 4 && ecc_stepsize == 512 && page_size == 4096) {
info->ecc_bch = 1;
@ -1389,7 +1386,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
ecc->size = info->chunk_size;
ecc->layout = &ecc_layout_4KB_bch4bit;
ecc->strength = 16;
return 1;
/*
* Required ECC: 8-bit correction per 512 bytes
@ -1404,8 +1400,15 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
ecc->size = info->chunk_size;
ecc->layout = &ecc_layout_4KB_bch8bit;
ecc->strength = 16;
return 1;
} else {
dev_err(&info->pdev->dev,
"ECC strength %d at page size %d is not supported\n",
strength, page_size);
return -ENODEV;
}
dev_info(&info->pdev->dev, "ECC strength %d, ECC step size %d\n",
ecc->strength, ecc->size);
return 0;
}
@ -1527,12 +1530,8 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
ret = pxa_ecc_init(info, &chip->ecc, ecc_strength,
ecc_step, mtd->writesize);
if (!ret) {
dev_err(&info->pdev->dev,
"ECC strength %d at page size %d is not supported\n",
ecc_strength, mtd->writesize);
return -ENODEV;
}
if (ret)
return ret;
/* calculate addressing information */
if (mtd->writesize >= 2048)