linux-kernel - Re: [PATCH V2 3/4] regulator: pv88080: Update Regulator driver for MFD support

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Date:   Thu, 27 Oct 2016 12:03:37 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Eric Jeong <eric.jeong.opensource@...semi.com>
Cc:     LINUX-KERNEL <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Alexandre Courbot <gnurou@...il.com>,
        DEVICETREE <devicetree@...r.kernel.org>,
        LINUX-GPIO <linux-gpio@...r.kernel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Support Opensource <support.opensource@...semi.com>
Subject: Re: [PATCH V2 3/4] regulator: pv88080: Update Regulator driver for
 MFD support

On Thu, Oct 27, 2016 at 10:03:14AM +0900, Eric Jeong wrote:

>  config REGULATOR_PV88080
> -	tristate "Powerventure Semiconductor PV88080 regulator"
> -	depends on I2C
> -	select REGMAP_I2C
> +	bool "Powerventure Semiconductor PV88080 regulator"
> +	depends on MFD_PV88080

Forcing the driver to be built in looks like a regression, why would we
want to do that?

> +	irq = platform_get_irq_byname(pdev, "regulator-irq");
> +	if (irq < 0) {
> +		dev_err(&pdev->dev, "Failed to get IRQ.\n");
> +		return irq;
>  	}

What's the _byname() adding here given that the name is so generic?  It
feels like if the name ever becomes important then this particular name
is going to be a problem.

> -module_i2c_driver(pv88080_regulator_driver);
> +static int __init pv88080_regulator_init(void)
> +{
> +	return platform_driver_register(&pv88080_regulator_driver);
> +}
> +subsys_initcall(pv88080_regulator_init);

Why are you converting this to subsys_initcall()?  This looks like
another regression.

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