linux-kernel - Re: [PATCH 1/3] Add a core driver for SI476x MFD

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Message-ID: <20121001172044.GA25335@sirena.org.uk>
Date:	Mon, 1 Oct 2012 18:20:45 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Andrey Smirnov <andrey.smirnov@...vergeddevices.net>
Cc:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] Add a core driver for SI476x MFD

On Thu, Sep 13, 2012 at 03:40:11PM -0700, Andrey Smirnov wrote:

> +	core = kzalloc(sizeof(*core), GFP_KERNEL);

devm_kzalloc()

> +	if (!core) {
> +		pr_err("si476x-core: failed to allocate " \
> +		       "'struct si476x_core'\n");
> +		return -ENOMEM;
> +	}

Splitting error messages over multiple lines like this just makes things
hard to grep for.

> +	core->supplies.vio1 = regulator_get(&client->dev, "vio1");
> +	if (IS_ERR_OR_NULL(core->supplies.vio1)) {
> +		dev_info(&client->dev, "No vio1 regulator found\n");
> +		core->supplies.vio1 = NULL;
> +	}

This and all the usages of the regulator API in the driver are broken,
the driver should treat failures to get the supplies as errors.  There
are more than enough ways to stub things out in the core.
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