linux-kernel - Re: [PATCH v3 2/3] i2c: acpi: Initialize info.type from of

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Message-ID: <CAHp75VdzGLem7c6Ur9Bj1UtJ56XdEii7SgRbe5yT5hew8yQO0g@mail.gmail.com>
Date:   Mon, 23 Jan 2017 19:10:13 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     "Dan O'Donovan" <dan@...tex.com>
Cc:     "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Jarkko Nikula <jarkko.nikula@...el.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, Len Brown <lenb@...nel.org>,
        linux-i2c@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
        linux-spi <linux-spi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Crestez Dan Leonard <leonard.crestez@...el.com>
Subject: Re: [PATCH v3 2/3] i2c: acpi: Initialize info.type from of_compatible

On Mon, Jan 23, 2017 at 6:08 PM, Dan O'Donovan <dan@...tex.com> wrote:
> From: Crestez Dan Leonard <leonard.crestez@...el.com>
>
> When using devicetree i2c_board_info.type is set to the compatible
> string with the vendor prefix removed. For I2C devices described via
> ACPI the i2c_board_info.type string is set to the ACPI device name. When
> using ACPI and DT ids this string ends up something like "PRP0001:00".
>
> If the of_compatible property is present try to use that instead. This
> makes it easier to instantiate i2c drivers through ACPI with DT ids.

> -       strlcpy(info->type, dev_name(&adev->dev), sizeof(info->type));
> +       /*
> +        * Populate modalias from compatible property if available,
> +        * otherwise use native ACPI information
> +        */
> +       if ((!adev->data.of_compatible) ||
> +           acpi_of_modalias(adev, info->type, sizeof(info->type)))

Redundant parens in lvalue. After removing them is it possible to use
one line for it?

> +               strlcpy(info->type, dev_name(&adev->dev), sizeof(info->type));

-- 
With Best Regards,
Andy Shevchenko