mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
470508f63a
Add void *context arrgument to the list of arguments of acpi_dev_install_notify_handler() and modify it to pass that argument as context to acpi_install_notify_handler() instead of its first argument which is problematic in general (for example, if platform drivers used it, they would rather get struct platform_device pointers or pointers to their private data from the context arguments of their notify handlers). Make all of the current callers of acpi_dev_install_notify_handler() take this change into account so as to avoid altering the general functionality. Co-developed-by: Michal Wilczynski <michal.wilczynski@intel.com> Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* ACPI Hardware Error Device (PNP0C33) Driver
|
|
*
|
|
* Copyright (C) 2010, Intel Corp.
|
|
* Author: Huang Ying <ying.huang@intel.com>
|
|
*
|
|
* ACPI Hardware Error Device is used to report some hardware errors
|
|
* notified via SCI, mainly the corrected errors.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/acpi.h>
|
|
#include <acpi/hed.h>
|
|
|
|
static const struct acpi_device_id acpi_hed_ids[] = {
|
|
{"PNP0C33", 0},
|
|
{"", 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, acpi_hed_ids);
|
|
|
|
static acpi_handle hed_handle;
|
|
|
|
static BLOCKING_NOTIFIER_HEAD(acpi_hed_notify_list);
|
|
|
|
int register_acpi_hed_notifier(struct notifier_block *nb)
|
|
{
|
|
return blocking_notifier_chain_register(&acpi_hed_notify_list, nb);
|
|
}
|
|
EXPORT_SYMBOL_GPL(register_acpi_hed_notifier);
|
|
|
|
void unregister_acpi_hed_notifier(struct notifier_block *nb)
|
|
{
|
|
blocking_notifier_chain_unregister(&acpi_hed_notify_list, nb);
|
|
}
|
|
EXPORT_SYMBOL_GPL(unregister_acpi_hed_notifier);
|
|
|
|
/*
|
|
* SCI to report hardware error is forwarded to the listeners of HED,
|
|
* it is used by HEST Generic Hardware Error Source with notify type
|
|
* SCI.
|
|
*/
|
|
static void acpi_hed_notify(acpi_handle handle, u32 event, void *data)
|
|
{
|
|
blocking_notifier_call_chain(&acpi_hed_notify_list, 0, NULL);
|
|
}
|
|
|
|
static int acpi_hed_add(struct acpi_device *device)
|
|
{
|
|
int err;
|
|
|
|
/* Only one hardware error device */
|
|
if (hed_handle)
|
|
return -EINVAL;
|
|
hed_handle = device->handle;
|
|
|
|
err = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
|
|
acpi_hed_notify, device);
|
|
if (err)
|
|
hed_handle = NULL;
|
|
|
|
return err;
|
|
}
|
|
|
|
static void acpi_hed_remove(struct acpi_device *device)
|
|
{
|
|
acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
|
|
acpi_hed_notify);
|
|
hed_handle = NULL;
|
|
}
|
|
|
|
static struct acpi_driver acpi_hed_driver = {
|
|
.name = "hardware_error_device",
|
|
.class = "hardware_error",
|
|
.ids = acpi_hed_ids,
|
|
.ops = {
|
|
.add = acpi_hed_add,
|
|
.remove = acpi_hed_remove,
|
|
},
|
|
};
|
|
module_acpi_driver(acpi_hed_driver);
|
|
|
|
MODULE_AUTHOR("Huang Ying");
|
|
MODULE_DESCRIPTION("ACPI Hardware Error Device Driver");
|
|
MODULE_LICENSE("GPL");
|