linux-kernel - Re: [PATCH 06/28] mtd: Add support for reading MTD devices via the nvmem API

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Date:   Wed, 8 Aug 2018 18:26:27 +0200
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Jonathan Corbet <corbet@....net>, Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Grygorii Strashko <grygorii.strashko@...com>,
        "David S . Miller" <davem@...emloft.net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Naren <naren.kernel@...il.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Lukas Wunner <lukas@...ner.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
        Sven Van Asbroeck <svendev@...x.com>,
        Paolo Abeni <pabeni@...hat.com>, Alban Bedel <albeu@...e.fr>,
        Rob Herring <robh@...nel.org>,
        David Lechner <david@...hnology.com>,
        linux-doc <linux-doc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        linux-mtd@...ts.infradead.org,
        Linux-OMAP <linux-omap@...r.kernel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH 06/28] mtd: Add support for reading MTD devices via the
 nvmem API

2018-08-08 18:20 GMT+02:00 Andrew Lunn <andrew@...n.ch>:
> On Wed, Aug 08, 2018 at 05:31:28PM +0200, Bartosz Golaszewski wrote:
>> From: Alban Bedel <albeu@...e.fr>
>>
>> Allow drivers that use the nvmem API to read data stored on MTD devices.
>> For this the mtd devices are registered as read-only NVMEM providers.
>> On OF systems only devices that have the 'nvmem-provider' property
>> are registered, on non-OF system all MTD devices are registered.
>> @@ -570,6 +613,11 @@ int add_mtd_device(struct mtd_info *mtd)
>>       if (error)
>>               goto fail_added;
>>
>> +     /* Add the nvmem provider */
>> +     error = mtd_nvmem_add(mtd);
>> +     if (error)
>> +             goto fail_nvmem_add;
>> +
>
> Hi Bartosz
>
> Maybe it is hiding somewhere, but i don't see any code looking into
> device tree looking for the 'nvmem-provider' property.
>
>        Andrew

Ugh, I copied the commit message from Alban's patch. For the moment
there's no such thing, you're right. I'll fix it for v2.

Bart