linux-kernel - Re: [PATCH v4 1/3] ACPI: amba bus probing support

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Date:	Sun, 3 Jan 2016 13:36:46 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Aleksey Makarov <aleksey.makarov@...aro.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Graeme Gregory <graeme.gregory@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J . Wysocki" <rjw@...ysocki.net>,
	Shannon Zhao <shannon.zhao@...aro.org>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Vladimir Zapolskiy <vz@...ia.com>, Len Brown <lenb@...nel.org>
Subject: Re: [PATCH v4 1/3] ACPI: amba bus probing support

On Wed, Dec 23, 2015 at 05:19:40PM +0300, Aleksey Makarov wrote:
> +	dev = amba_device_alloc(NULL, 0, 0);
> +	if (!dev) {
> +		dev_err(&adev->dev, "%s(): amba_device_alloc() failed\n",
> +			__func__);
> +		return -ENOMEM;
> +	}
...
> +	/*
> +	 * If the ACPI node has a parent and that parent has a physical device
> +	 * attached to it, that physical device should be the parent of the
> +	 * platform device we are about to create.
> +	 */
> +	dev->dev.parent = NULL;

No need to initialise this; amba_device_alloc() uses kzalloc(), and so
dev->dev.parent will already be NULL.

...
> +	dev_set_name(&dev->dev, "%s", dev_name(&adev->dev));

Is there a reason not to use:

	dev = amba_device_alloc(dev_name(&adev->dev), 0, 0);

above?

-- 
RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
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