linux-stable/drivers/xen/xen-stub.c
Liu Jinsong d2e0bca377 xen/acpi: remove redundant acpi/acpi_drivers.h include
It's redundant since linux/acpi.h has include it when CONFIG_ACPI enabled,
and when CONFIG_ACPI disabled it will trigger compiling warning

In file included from drivers/xen/xen-stub.c:28:0:
include/acpi/acpi_drivers.h:103:31:
warning: 'struct acpi_device' declared inside parameter list [enabled by default]
include/acpi/acpi_drivers.h:103:31:
warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
include/acpi/acpi_drivers.h:107:43:
warning: 'struct acpi_pci_root' declared inside parameter list [enabled by default]

Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-11 13:53:02 -04:00

100 lines
2.8 KiB
C

/*
* xen-stub.c - stub drivers to reserve space for Xen
*
* Copyright (C) 2012 Intel Corporation
* Author: Liu Jinsong <jinsong.liu@intel.com>
* Author: Jiang Yunhong <yunhong.jiang@intel.com>
*
* Copyright (C) 2012 Oracle Inc
* Author: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <xen/acpi.h>
#ifdef CONFIG_ACPI
/*--------------------------------------------
stub driver for Xen memory hotplug
--------------------------------------------*/
static const struct acpi_device_id memory_device_ids[] = {
{ACPI_MEMORY_DEVICE_HID, 0},
{"", 0},
};
static struct acpi_driver xen_stub_memory_device_driver = {
/* same name as native memory driver to block native loaded */
.name = "acpi_memhotplug",
.class = ACPI_MEMORY_DEVICE_CLASS,
.ids = memory_device_ids,
};
int xen_stub_memory_device_init(void)
{
if (!xen_initial_domain())
return -ENODEV;
/* just reserve space for Xen, block native driver loaded */
return acpi_bus_register_driver(&xen_stub_memory_device_driver);
}
EXPORT_SYMBOL_GPL(xen_stub_memory_device_init);
subsys_initcall(xen_stub_memory_device_init);
void xen_stub_memory_device_exit(void)
{
acpi_bus_unregister_driver(&xen_stub_memory_device_driver);
}
EXPORT_SYMBOL_GPL(xen_stub_memory_device_exit);
/*--------------------------------------------
stub driver for Xen cpu hotplug
--------------------------------------------*/
static const struct acpi_device_id processor_device_ids[] = {
{ACPI_PROCESSOR_OBJECT_HID, 0},
{ACPI_PROCESSOR_DEVICE_HID, 0},
{"", 0},
};
static struct acpi_driver xen_stub_processor_driver = {
/* same name as native processor driver to block native loaded */
.name = "processor",
.class = ACPI_PROCESSOR_CLASS,
.ids = processor_device_ids,
};
int xen_stub_processor_init(void)
{
if (!xen_initial_domain())
return -ENODEV;
/* just reserve space for Xen, block native driver loaded */
return acpi_bus_register_driver(&xen_stub_processor_driver);
}
EXPORT_SYMBOL_GPL(xen_stub_processor_init);
subsys_initcall(xen_stub_processor_init);
void xen_stub_processor_exit(void)
{
acpi_bus_unregister_driver(&xen_stub_processor_driver);
}
EXPORT_SYMBOL_GPL(xen_stub_processor_exit);
#endif