51fac8388a
The second argument of ACPI driver .remove() operation is only used by the ACPI processor driver and the value passed to that driver through it is always available from the given struct acpi_device object's removal_type field. For this reason, the second ACPI driver .remove() argument is in fact useless, so drop it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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* ACPI Hardware Error Device (PNP0C33) Driver
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*
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* Copyright (C) 2010, Intel Corp.
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* Author: Huang Ying <ying.huang@intel.com>
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*
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* ACPI Hardware Error Device is used to report some hardware errors
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* notified via SCI, mainly the corrected errors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/hed.h>
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static struct acpi_device_id acpi_hed_ids[] = {
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{"PNP0C33", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, acpi_hed_ids);
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static acpi_handle hed_handle;
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static BLOCKING_NOTIFIER_HEAD(acpi_hed_notify_list);
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int register_acpi_hed_notifier(struct notifier_block *nb)
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{
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return blocking_notifier_chain_register(&acpi_hed_notify_list, nb);
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}
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EXPORT_SYMBOL_GPL(register_acpi_hed_notifier);
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void unregister_acpi_hed_notifier(struct notifier_block *nb)
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{
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blocking_notifier_chain_unregister(&acpi_hed_notify_list, nb);
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}
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EXPORT_SYMBOL_GPL(unregister_acpi_hed_notifier);
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/*
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* SCI to report hardware error is forwarded to the listeners of HED,
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* it is used by HEST Generic Hardware Error Source with notify type
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* SCI.
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*/
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static void acpi_hed_notify(struct acpi_device *device, u32 event)
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{
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blocking_notifier_call_chain(&acpi_hed_notify_list, 0, NULL);
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}
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static int acpi_hed_add(struct acpi_device *device)
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{
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/* Only one hardware error device */
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if (hed_handle)
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return -EINVAL;
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hed_handle = device->handle;
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return 0;
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}
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static int acpi_hed_remove(struct acpi_device *device)
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{
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hed_handle = NULL;
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return 0;
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}
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static struct acpi_driver acpi_hed_driver = {
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.name = "hardware_error_device",
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.class = "hardware_error",
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.ids = acpi_hed_ids,
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.ops = {
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.add = acpi_hed_add,
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.remove = acpi_hed_remove,
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.notify = acpi_hed_notify,
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},
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};
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module_acpi_driver(acpi_hed_driver);
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ACPI_MODULE_NAME("hed");
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MODULE_AUTHOR("Huang Ying");
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MODULE_DESCRIPTION("ACPI Hardware Error Device Driver");
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MODULE_LICENSE("GPL");
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