linux-kernel - Re: [RFC 01/18] mfd: syscon: Consider platform data a regmap config name

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Date:	Mon, 6 Jan 2014 09:48:08 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Pawel Moll <pawel.moll@....com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Arnd Bergmann <arnd@...db.de>, Jon Medhurst <tixy@...aro.org>,
	arm@...nel.org, Olof Johansson <olof@...om.net>
Subject: Re: [RFC 01/18] mfd: syscon: Consider platform data a regmap config
 name

> Use the device platform data as a regmap config
> name. This is particularly useful in the regmap
> debugfs when there is more than one syscon device
> registered, to distinguish the register blocks.
> 
> Signed-off-by: Pawel Moll <pawel.moll@....com>
> Cc: Samuel Ortiz <sameo@...ux.intel.com>
> Cc: Lee Jones <lee.jones@...aro.org>
> ---
>  drivers/mfd/syscon.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
> index 71841f9..ea1770b 100644
> --- a/drivers/mfd/syscon.c
> +++ b/drivers/mfd/syscon.c
> @@ -143,6 +143,7 @@ static int syscon_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	syscon_regmap_config.max_register = res->end - res->start - 3;
> +	syscon_regmap_config.name = dev_get_platdata(&pdev->dev);
>  	syscon->regmap = devm_regmap_init_mmio(dev, base,
>  					&syscon_regmap_config);
>  	if (IS_ERR(syscon->regmap)) {

This smells a bit fishy to me. Can you point me to the piece of code
or patch where you set the platform_data pointer as a string?

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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