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mtd: spi-nor: simplify spi_nor_get_flash_info()

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Rework spi_nor_get_flash_info() to make it look more straight forward
and esp. don't return early. The latter is a preparation to check for
deprecated flashes.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Signed-off-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20240603134055.1859863-1-mwalle@kernel.org
This commit is contained in:
Michael Walle 2024-06-03 15:40:55 +02:00 committed by Pratyush Yadav
parent 2d95d13248
commit e159079a8b
1 changed files with 14 additions and 18 deletions
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32
drivers/mtd/spi-nor/core.c
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@ -3298,32 +3298,28 @@ static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor,
if (name)
info = spi_nor_match_name(nor, name);
/* Try to auto-detect if chip name wasn't specified or not found */
if (!info)
return spi_nor_detect(nor);
/*
* If caller has specified name of flash model that can normally be
* detected using JEDEC, let's verify it.
* Auto-detect if chip name wasn't specified or not found, or the chip
* has an ID. If the chip supposedly has an ID, we also do an
* auto-detection to compare it later.
*/
if (name && info->id) {
if (!info || info->id) {
const struct flash_info *jinfo;
jinfo = spi_nor_detect(nor);
if (IS_ERR(jinfo)) {
if (IS_ERR(jinfo))
return jinfo;
} else if (jinfo != info) {
/*
* JEDEC knows better, so overwrite platform ID. We
* can't trust partitions any longer, but we'll let
* mtd apply them anyway, since some partitions may be
* marked read-only, and we don't want to loose that
* information, even if it's not 100% accurate.
*/
/*
* If caller has specified name of flash model that can normally
* be detected using JEDEC, let's verify it.
*/
if (info && jinfo != info)
dev_warn(nor->dev, "found %s, expected %s\n",
jinfo->name, info->name);
info = jinfo;
}
/* If info was set before, JEDEC knows better. */
info = jinfo;
}
return info;