linux-kernel - Re: [PATCH 3/6] mfd: core: add helper function to register hotplug devices

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Date:	Tue, 7 Oct 2014 10:24:03 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Johan Hovold <johan@...nel.org>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 3/6] mfd: core: add helper function to register hotplug
 devices

On Fri, 26 Sep 2014, Johan Hovold wrote:

> Hot-pluggable multi-function devices should always be registered with
> PLATFORM_DEVID_AUTO to avoid name collisions on the platform bus. This
> helper also hides the memory map and irq parameters, which aren't used
> by hot-pluggable (e.g. USB-based) devices.
> 
> Signed-off-by: Johan Hovold <johan@...nel.org>
> ---
>  include/linux/mfd/core.h | 7 +++++++
>  1 file changed, 7 insertions(+)

Applied for v3.19.

> diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
> index f543de91ce19..1e47262a1c63 100644
> --- a/include/linux/mfd/core.h
> +++ b/include/linux/mfd/core.h
> @@ -108,6 +108,13 @@ extern int mfd_add_devices(struct device *parent, int id,
>  			   struct resource *mem_base,
>  			   int irq_base, struct irq_domain *irq_domain);
>  
> +static inline int mfd_add_hotplug_devices(struct device *parent,
> +		const struct mfd_cell *cells, int n_devs)
> +{
> +	return mfd_add_devices(parent, PLATFORM_DEVID_AUTO, cells, n_devs,
> +			NULL, 0, NULL);
> +}
> +
>  extern void mfd_remove_devices(struct device *parent);
>  
>  #endif

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