ACPI: processor: use .notify method instead of installing handler directly
This patch adds a .notify() method. The presence of .notify() causes Linux/ACPI to manage event handlers and notify handlers on our behalf, so we don't have to install and remove them ourselves. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> CC: Zhang Rui <rui.zhang@intel.com> CC: Zhao Yakui <yakui.zhao@intel.com> CC: Venki Pallipadi <venkatesh.pallipadi@intel.com> CC: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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373cfc360e
Коммит
7ec0a72907
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@ -82,7 +82,7 @@ static int acpi_processor_add(struct acpi_device *device);
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static int acpi_processor_start(struct acpi_device *device);
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static int acpi_processor_remove(struct acpi_device *device, int type);
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static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
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static void acpi_processor_notify(acpi_handle handle, u32 event, void *data);
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static void acpi_processor_notify(struct acpi_device *device, u32 event);
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static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
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static int acpi_processor_handle_eject(struct acpi_processor *pr);
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@ -104,6 +104,7 @@ static struct acpi_driver acpi_processor_driver = {
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.start = acpi_processor_start,
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.suspend = acpi_processor_suspend,
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.resume = acpi_processor_resume,
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.notify = acpi_processor_notify,
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},
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};
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@ -691,7 +692,6 @@ static DEFINE_PER_CPU(void *, processor_device_array);
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static int __cpuinit acpi_processor_start(struct acpi_device *device)
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{
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int result = 0;
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acpi_status status = AE_OK;
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struct acpi_processor *pr;
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struct sys_device *sysdev;
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@ -728,9 +728,6 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
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if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev"))
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return -EFAULT;
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status = acpi_install_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY,
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acpi_processor_notify, pr);
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/* _PDC call should be done before doing anything else (if reqd.). */
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arch_acpi_processor_init_pdc(pr);
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acpi_processor_set_pdc(pr);
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@ -776,18 +773,14 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
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return result;
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}
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static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
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static void acpi_processor_notify(struct acpi_device *device, u32 event)
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{
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struct acpi_processor *pr = data;
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struct acpi_device *device = NULL;
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struct acpi_processor *pr = acpi_driver_data(device);
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int saved;
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if (!pr)
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return;
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if (acpi_bus_get_device(pr->handle, &device))
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return;
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switch (event) {
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case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
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saved = pr->performance_platform_limit;
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@ -866,7 +859,6 @@ static int acpi_processor_add(struct acpi_device *device)
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static int acpi_processor_remove(struct acpi_device *device, int type)
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{
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acpi_status status = AE_OK;
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struct acpi_processor *pr = NULL;
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@ -885,9 +877,6 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
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acpi_processor_power_exit(pr, device);
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status = acpi_remove_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY,
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acpi_processor_notify);
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sysfs_remove_link(&device->dev.kobj, "sysdev");
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acpi_processor_remove_fs(device);
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