Re: [PATCH 01/04] Driver Core: Add platform device arch data

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Wednesday 27 May 2009, Magnus Damm wrote:
> From: Magnus Damm <damm@igel.co.jp>
> 
> Allow architecture specific data in struct platform_device.
> Platform device data is needed by the runtime pm code. A similar
> struct already exists for struct device.
> 
> The architecture specific asm/device.h file needs to provide
> struct pdev_archdata if CONFIG_HAVE_PLATFORM_DEVICE_DATA is set.
> 
> Signed-off-by: Magnus Damm <damm@igel.co.jp>
> ---
> 
>  Optionally we can make use of struct device archdata instead,
>  but since the runtime device pm is limited to platform devices
>  it makes sense to make this data platform device specific imo.
> 
>  arch/Kconfig                    |    3 +++
>  include/linux/platform_device.h |    5 +++++
>  2 files changed, 8 insertions(+)
> 
> --- 0001/arch/Kconfig
> +++ work/arch/Kconfig	2009-05-15 14:51:35.000000000 +0900
> @@ -112,3 +112,6 @@ config HAVE_DMA_API_DEBUG
>  
>  config HAVE_DEFAULT_NO_SPIN_MUTEXES
>  	bool
> +
> +config HAVE_PLATFORM_DEVICE_ARCHDATA

Hmm.  Do we really need yet another CONFIG_ option for that?

> +	bool
> --- 0001/include/linux/platform_device.h
> +++ work/include/linux/platform_device.h	2009-05-15 16:59:01.000000000 +0900
> @@ -23,6 +23,11 @@ struct platform_device {
>  	void		*platform_data;
>  
>  	struct platform_device_id	*id_entry;
> +
> +#ifdef CONFIG_HAVE_PLATFORM_DEVICE_ARCHDATA
> +	/* arch specific additions */
> +	struct pdev_archdata	archdata;
> +#endif
>  };
>  
>  #define platform_get_device_id(pdev)	((pdev)->id_entry)