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Core MTD changes:

Browse Source 
* Prepare mtd_otp_nvmem_add() to handle -EPROBE_DEFER
 * Fix error path for nvmem provider
 * Fix nvmem error reporting
 * Provide unique name for nvmem device
 
 These changes are expected to be pulled before applying nvmem layouts
 support in order to get a fully working support in all situations.
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Merge tag 'mtd/core-fixes-before-nvmem-layouts-for-6.4' into mtd/next

Core MTD changes:
* Prepare mtd_otp_nvmem_add() to handle -EPROBE_DEFER
* Fix error path for nvmem provider
* Fix nvmem error reporting
* Provide unique name for nvmem device

These changes are expected to be pulled before applying nvmem layouts
support in order to get a fully working support in all situations.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Miquel Raynal 2023-03-08 14:47:42 +01:00
commit 1a7537a39b
1 changed files with 16 additions and 10 deletions
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26
drivers/mtd/mtdcore.c
View File

@ -888,8 +888,8 @@ static struct nvmem_device *mtd_otp_nvmem_register(struct mtd_info *mtd,
/* OTP nvmem will be registered on the physical device */
config.dev = mtd->dev.parent;
config.name = kasprintf(GFP_KERNEL, "%s-%s", dev_name(&mtd->dev), compatible);
config.id = NVMEM_DEVID_NONE;
config.name = compatible;
config.id = NVMEM_DEVID_AUTO;
config.owner = THIS_MODULE;
config.type = NVMEM_TYPE_OTP;
config.root_only = true;
@ -905,7 +905,6 @@ static struct nvmem_device *mtd_otp_nvmem_register(struct mtd_info *mtd,
nvmem = NULL;
of_node_put(np);
kfree(config.name);
return nvmem;
}
@ -940,6 +939,7 @@ static int mtd_nvmem_fact_otp_reg_read(void *priv, unsigned int offset,
static int mtd_otp_nvmem_add(struct mtd_info *mtd)
{
struct device *dev = mtd->dev.parent;
struct nvmem_device *nvmem;
ssize_t size;
int err;
@ -953,8 +953,8 @@ static int mtd_otp_nvmem_add(struct mtd_info *mtd)
nvmem = mtd_otp_nvmem_register(mtd, "user-otp", size,
mtd_nvmem_user_otp_reg_read);
if (IS_ERR(nvmem)) {
dev_err(&mtd->dev, "Failed to register OTP NVMEM device\n");
return PTR_ERR(nvmem);
err = PTR_ERR(nvmem);
goto err;
}
mtd->otp_user_nvmem = nvmem;
}
@ -971,7 +971,6 @@ static int mtd_otp_nvmem_add(struct mtd_info *mtd)
nvmem = mtd_otp_nvmem_register(mtd, "factory-otp", size,
mtd_nvmem_fact_otp_reg_read);
if (IS_ERR(nvmem)) {
dev_err(&mtd->dev, "Failed to register OTP NVMEM device\n");
err = PTR_ERR(nvmem);
goto err;
}
@ -983,7 +982,7 @@ static int mtd_otp_nvmem_add(struct mtd_info *mtd)
err:
nvmem_unregister(mtd->otp_user_nvmem);
return err;
return dev_err_probe(dev, err, "Failed to register OTP NVMEM device\n");
}
/**
@ -1023,10 +1022,14 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
mtd_set_dev_defaults(mtd);
ret = mtd_otp_nvmem_add(mtd);
if (ret)
goto out;
if (IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
ret = add_mtd_device(mtd);
if (ret)
return ret;
goto out;
}
/* Prefer parsed partitions over driver-provided fallback */
@ -1061,9 +1064,12 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
register_reboot_notifier(&mtd->reboot_notifier);
}
ret = mtd_otp_nvmem_add(mtd);
out:
if (ret) {
nvmem_unregister(mtd->otp_user_nvmem);
nvmem_unregister(mtd->otp_factory_nvmem);
}
if (ret && device_is_registered(&mtd->dev))
del_mtd_device(mtd);