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mtd: core: provide unique name for nvmem device, take two

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commit 1cd9ceaa5282ff10ea20a7fbadde5a476a1cc99e upstream.

Commit c048b60d39 ("mtd: core: provide unique name for nvmem device")
tries to give the nvmem device a unique name, but fails badly if the mtd
device doesn't have a "struct device" associated with it, i.e. if
CONFIG_MTD_PARTITIONED_MASTER is not set. This will result in the name
"(null)-user-otp", which is not unique. It seems the best we can do is
to use the compatible name together with a unique identifier added by
the nvmem subsystem by using NVMEM_DEVID_AUTO.

Fixes: c048b60d39 ("mtd: core: provide unique name for nvmem device")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-1-michael@walle.cc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Walle 2023-03-08 09:20:18 +01:00 committed by Greg Kroah-Hartman
parent da4c747730
commit 43a72c1619
1 changed files with 2 additions and 3 deletions
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5
drivers/mtd/mtdcore.c
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@ -884,8 +884,8 @@ 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;
@ -901,7 +901,6 @@ static struct nvmem_device *mtd_otp_nvmem_register(struct mtd_info *mtd,
nvmem = NULL;
of_node_put(np);
kfree(config.name);
return nvmem;
}