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Date:   Wed, 8 Aug 2018 18:20:42 +0200
From:   Andrew Lunn <andrew@lunn.ch>
To:     Bartosz Golaszewski <brgl@bgdev.pl>
Cc:     Jonathan Corbet <corbet@lwn.net>, Sekhar Nori <nsekhar@ti.com>,
        Kevin Hilman <khilman@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        David Woodhouse <dwmw2@infradead.org>,
        Brian Norris <computersforpeace@gmail.com>,
        Boris Brezillon <boris.brezillon@bootlin.com>,
        Marek Vasut <marek.vasut@gmail.com>,
        Richard Weinberger <richard@nod.at>,
        Grygorii Strashko <grygorii.strashko@ti.com>,
        "David S . Miller" <davem@davemloft.net>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Naren <naren.kernel@gmail.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Lukas Wunner <lukas@wunner.de>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>,
        Sven Van Asbroeck <svendev@arcx.com>,
        Paolo Abeni <pabeni@redhat.com>, Alban Bedel <albeu@free.fr>,
        Rob Herring <robh@kernel.org>,
        David Lechner <david@lechnology.com>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org,
        linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org,
        netdev@vger.kernel.org,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: Re: [PATCH 06/28] mtd: Add support for reading MTD devices via the
 nvmem API
Message-ID: <20180808162042.GG7275@lunn.ch>
References: <20180808153150.23444-1-brgl@bgdev.pl>
 <20180808153150.23444-7-brgl@bgdev.pl>
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On Wed, Aug 08, 2018 at 05:31:28PM +0200, Bartosz Golaszewski wrote:
> From: Alban Bedel <albeu@free.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