This is a note to let you know that I've just added the patch titled
mtd: core: provide unique name for nvmem device, take two
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mtd-core-provide-unique-name-for-nvmem-device-take-two.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1cd9ceaa5282ff10ea20a7fbadde5a476a1cc99e Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@xxxxxxxx>
Date: Wed, 8 Mar 2023 09:20:18 +0100
Subject: mtd: core: provide unique name for nvmem device, take two
From: Michael Walle <michael@xxxxxxxx>
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@xxxxxxxxxxxxxxx
Signed-off-by: Michael Walle <michael@xxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-1-michael@xxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/mtdcore.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -828,8 +828,8 @@ 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;
@@ -845,7 +845,6 @@ static struct nvmem_device *mtd_otp_nvme
nvmem = NULL;
of_node_put(np);
- kfree(config.name);
return nvmem;
}
Patches currently in stable-queue which might be from michael@xxxxxxxx are
queue-5.15/mtd-core-fix-nvmem-error-reporting.patch
queue-5.15/mtd-core-fix-error-path-for-nvmem-provider.patch
queue-5.15/mtd-core-provide-unique-name-for-nvmem-device-take-two.patch
