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mtd: rawnand: Return an enum from of_get_nand_ecc_algo() 

There is an enumeration to list ECC algorithm, let's use it instead of
returning an int.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/linux-mtd/20200526195633.11543-6-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2020-05-26 21:56:17 +02:00
parent 74e24cd237
commit dbc2f2e6d5
1 changed files with 19 additions and 16 deletions
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27
drivers/mtd/nand/raw/nand_base.c
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@ -5043,17 +5043,20 @@ static const char * const nand_ecc_algos[] = {
[NAND_ECC_RS] = "rs",
};
static int of_get_nand_ecc_algo(struct device_node *np)
static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np)
{
enum nand_ecc_algo ecc_algo;
const char *pm;
int err, i;
int err;
err = of_property_read_string(np, "nand-ecc-algo", &pm);
if (!err) {
for (i = NAND_ECC_HAMMING; i < ARRAY_SIZE(nand_ecc_algos); i++)
if (!strcasecmp(pm, nand_ecc_algos[i]))
return i;
return -ENODEV;
for (ecc_algo = NAND_ECC_HAMMING;
ecc_algo < ARRAY_SIZE(nand_ecc_algos);
ecc_algo++) {
if (!strcasecmp(pm, nand_ecc_algos[ecc_algo]))
return ecc_algo;
}
}
/*
@ -5061,15 +5064,14 @@ static int of_get_nand_ecc_algo(struct device_node *np)
* for some obsoleted values that were specifying ECC algorithm.
*/
err = of_property_read_string(np, "nand-ecc-mode", &pm);
if (err < 0)
return err;
if (!err) {
if (!strcasecmp(pm, "soft"))
return NAND_ECC_HAMMING;
else if (!strcasecmp(pm, "soft_bch"))
return NAND_ECC_BCH;
}
return -ENODEV;
return NAND_ECC_UNKNOWN;
}
static int of_get_nand_ecc_step_size(struct device_node *np)
@ -5114,7 +5116,8 @@ static bool of_get_nand_on_flash_bbt(struct device_node *np)
static int nand_dt_init(struct nand_chip *chip)
{
struct device_node *dn = nand_get_flash_node(chip);
int ecc_mode, ecc_algo, ecc_strength, ecc_step;
enum nand_ecc_algo ecc_algo;
int ecc_mode, ecc_strength, ecc_step;
if (!dn)
return 0;
@ -5136,7 +5139,7 @@ static int nand_dt_init(struct nand_chip *chip)
if (ecc_mode >= 0)
chip->ecc.mode = ecc_mode;
if (ecc_algo >= 0)
if (ecc_algo != NAND_ECC_UNKNOWN)
chip->ecc.algo = ecc_algo;
if (ecc_strength >= 0)