linux-kernel - Re: [PATCH v2] mtd: core: handle flashes without OTP gracefully

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Message-Id: <20210715225031.65986-1-miquel.raynal@bootlin.com>
Date:   Fri, 16 Jul 2021 00:50:31 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Michael Walle <michael@...le.cc>, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tudor.Ambarus@...rochip.com, Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH v2] mtd: core: handle flashes without OTP gracefully

On Wed, 2021-07-07 at 13:53:59 UTC, Michael Walle wrote:
> There are flash drivers which registers the OTP callbacks although the
> flash doesn't support OTP regions and return -ENODATA for these
> callbacks if there is no OTP. If this happens, the probe of the whole
> flash will fail. Fix it by handling the ENODATA return code and skip
> the OTP region nvmem setup.
> 
> Fixes: 4b361cfa8624 ("mtd: core: add OTP nvmem provider support")
> Reported-by: Guenter Roeck <linux@...ck-us.net>
> Signed-off-by: Michael Walle <michael@...le.cc>
> Tested-by: Guenter Roeck <linux@...ck-us.net>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/fixes, thanks.

Miquel