linux-kernel - Re: [PATCH 1/2] regulator: act8945a: add regulator driver for ACT8945A

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Message-ID: <20160115175757.GA6588@sirena.org.uk>
Date:	Fri, 15 Jan 2016 17:57:57 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Wenyou Yang <wenyou.yang@...el.com>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] regulator: act8945a: add regulator driver for
 ACT8945A

On Fri, Jan 08, 2016 at 10:08:57AM +0800, Wenyou Yang wrote:

> +	np = of_get_child_by_name(pdev->dev.of_node, "regulators");
> +	if (!np) {
> +		dev_err(&pdev->dev, "regulator node not found\n");
> +		return -EINVAL;
> +	}
> +
> +	matches = act8945a_matches;
> +	num_matches = ARRAY_SIZE(act8945a_matches);
> +
> +	ret = of_regulator_match(&pdev->dev, np, matches, num_matches);

Don't open code this, use the core regulators_node and of_match
implementation instead.

> +		dev_info(act8945a_dev->dev, "%s regulator registered\n",
> +			desc->name);

This is just noise, please remove it - let the core handle notifying
users.

> +static int __init act8945a_pmic_init(void)
> +{
> +	return platform_driver_register(&act8945a_pmic_driver);
> +}
> +subsys_initcall(act8945a_pmic_init);

Please use module_platform_driver() unless there is a strong reason to
do otherwise.

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