linux-kernel - Re: [PATCH v3 3/3] spi: acpi: Initialize modalias from of

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Message-ID: <CAHp75Vf0NaEFnxWPt9NAa5-jWMM091Y+Tg8D=Du0uECDVoWW4Q@mail.gmail.com>
Date:   Mon, 23 Jan 2017 19:11:43 +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 3/3] spi: acpi: Initialize modalias 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 spi_device.modalias is set to the compatible
> string with the vendor prefix removed. For SPI devices described via
> ACPI the spi_device.modalias string is initialized by acpi_device_hid.
> When using ACPI and DT ids this string ends up something like "PRP0001".
>
> Change acpi_register_spi_device to use the of_compatible property if
> present. This makes it easier to instantiate spi drivers through ACPI
> with DT ids.

> +       /*
> +        * Populate modalias from compatible property if available,
> +        * otherwise use native ACPI information
> +        */
> +       if ((!adev->data.of_compatible) ||
> +           acpi_of_modalias(adev, spi->modalias, sizeof(spi->modalias)))

Same comment as in patch 2.

> +               strlcpy(spi->modalias, acpi_device_hid(adev),
> +                       sizeof(spi->modalias));

Could this be one line?

-- 
With Best Regards,
Andy Shevchenko