linux-kernel - Re: [RFC v9 PATCH 06/21] memory-hotplug: export the function acpi_bus

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Message-ID: <506A36A1.6030709@gmail.com>
Date:	Tue, 02 Oct 2012 08:34:41 +0800
From:	Ni zhan Chen <nizhan.chen@...il.com>
To:	wency@...fujitsu.com
CC:	x86@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-ia64@...r.kernel.org, cmetcalf@...era.com,
	sparclinux@...r.kernel.org, rientjes@...gle.com, liuj97@...il.com,
	len.brown@...el.com, benh@...nel.crashing.org, paulus@...ba.org,
	cl@...ux.com, minchan.kim@...il.com, akpm@...ux-foundation.org,
	kosaki.motohiro@...fujitsu.com, isimatu.yasuaki@...fujitsu.com
Subject: Re: [RFC v9 PATCH 06/21] memory-hotplug: export the function acpi_bus_remove()

On 09/05/2012 05:25 PM, wency@...fujitsu.com wrote:
> From: Wen Congyang <wency@...fujitsu.com>
>
> The function acpi_bus_remove() can remove a acpi device from acpi device.

IIUC, s/acpi device/acpi bus

>   
> When a acpi device is removed, we need to call this function to remove
> the acpi device from acpi bus. So export this function.
>
> CC: David Rientjes <rientjes@...gle.com>
> CC: Jiang Liu <liuj97@...il.com>
> CC: Len Brown <len.brown@...el.com>
> CC: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> CC: Paul Mackerras <paulus@...ba.org>
> CC: Christoph Lameter <cl@...ux.com>
> Cc: Minchan Kim <minchan.kim@...il.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> CC: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
> Signed-off-by: Wen Congyang <wency@...fujitsu.com>
> ---
>   drivers/acpi/scan.c     |    3 ++-
>   include/acpi/acpi_bus.h |    1 +
>   2 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index d1ecca2..1cefc34 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1224,7 +1224,7 @@ static int acpi_device_set_context(struct acpi_device *device)
>   	return -ENODEV;
>   }
>   
> -static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
> +int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
>   {
>   	if (!dev)
>   		return -EINVAL;
> @@ -1246,6 +1246,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
>   
>   	return 0;
>   }
> +EXPORT_SYMBOL(acpi_bus_remove);
>   
>   static int acpi_add_single_object(struct acpi_device **child,
>   				  acpi_handle handle, int type,
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index bde976e..2ccf109 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -360,6 +360,7 @@ bool acpi_bus_power_manageable(acpi_handle handle);
>   bool acpi_bus_can_wakeup(acpi_handle handle);
>   int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
>   void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
> +int acpi_bus_remove(struct acpi_device *dev, int rmdevice);
>   #ifdef CONFIG_ACPI_PROC_EVENT
>   int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
>   int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);

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