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    Subject[RFC PATCH v5 06/19] memory-hotplug: export the function acpi_bus_remove()
    The function acpi_bus_remove() can remove a acpi device from acpi device.
    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@google.com>
    CC: Jiang Liu <liuj97@gmail.com>
    CC: Len Brown <len.brown@intel.com>
    CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    CC: Paul Mackerras <paulus@samba.org>
    CC: Christoph Lameter <cl@linux.com>
    Cc: Minchan Kim <minchan.kim@gmail.com>
    CC: Andrew Morton <akpm@linux-foundation.org>
    CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    CC: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
    Signed-off-by: Wen Congyang <wency@cn.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);
    --
    1.7.1


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