Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Huang Ying |
197 |
65.02% |
1 |
11.11% |
| Rafael J. Wysocki |
47 |
15.51% |
2 |
22.22% |
| Michal Wilczynski |
38 |
12.54% |
1 |
11.11% |
| Xiaofei Tan |
16 |
5.28% |
1 |
11.11% |
| Thomas Gleixner |
2 |
0.66% |
1 |
11.11% |
| Mika Westerberg |
1 |
0.33% |
1 |
11.11% |
| Mathias Krause |
1 |
0.33% |
1 |
11.11% |
| Dawei Li |
1 |
0.33% |
1 |
11.11% |
| Total |
303 |
|
9 |
|
// 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 <linux/platform_device.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_probe(struct platform_device *pdev)
{
struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
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 platform_device *pdev)
{
struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
acpi_hed_notify);
hed_handle = NULL;
}
static struct platform_driver acpi_hed_driver = {
.probe = acpi_hed_probe,
.remove = acpi_hed_remove,
.driver = {
.name = "acpi-hardware-error-device",
.acpi_match_table = acpi_hed_ids,
},
};
static int __init acpi_hed_driver_init(void)
{
return platform_driver_register(&acpi_hed_driver);
}
subsys_initcall(acpi_hed_driver_init);
MODULE_AUTHOR("Huang Ying");
MODULE_DESCRIPTION("ACPI Hardware Error Device Driver");
MODULE_LICENSE("GPL");