mtd: core: avoid double-free of OTP NVMEM device

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If factory OTP setup fails after the user OTP NVMEM device has been
registered, mtd_otp_nvmem_add() unregisters the user device but leaves
mtd->otp_user_nvmem set. On an error, the caller unregisters it again.
For -EOPNOTSUPP, registration continues and normal teardown unregisters
it again.

Clear mtd->otp_user_nvmem after unregistering it.

Fixes: e0489f6e22 ("mtd: core: fix error path for nvmem provider")
Fixes: fe0b8213c0 ("mtd: core: Don't fail mtd_otp_nvmem_add() if OTP is unsupported")
Assisted-by: Codex:gpt-5.6-sol
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

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Karl Mehltretter 2026-08-16 18:30:27 +02:00 • committed by Miquel Raynal

parent 63d6cace2c

commit 26300879cd

1 changed files with 1 additions and 0 deletions

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drivers/mtd/mtdcore.c

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