From: Michael Walle michael@walle.cc
commit 1cd9ceaa5282ff10ea20a7fbadde5a476a1cc99e upstream.
Commit c048b60d39e1 ("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: c048b60d39e1 ("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 --- drivers/mtd/mtdcore.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -884,8 +884,8 @@ static struct nvmem_device *mtd_otp_nvme
/* 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_nvme nvmem = NULL;
of_node_put(np); - kfree(config.name);
return nvmem; }