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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>
This commit is contained in:
Bjorn Helgaas 2009-03-30 17:48:24 +00:00 committed by Len Brown
parent 373cfc360e
commit 7ec0a72907
1 changed files with 4 additions and 15 deletions
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19
drivers/acpi/processor_core.c
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@ -82,7 +82,7 @@ static int acpi_processor_add(struct acpi_device *device);
static int acpi_processor_start(struct acpi_device *device);
static int acpi_processor_remove(struct acpi_device *device, int type);
static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
static void acpi_processor_notify(acpi_handle handle, u32 event, void *data);
static void acpi_processor_notify(struct acpi_device *device, u32 event);
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
static int acpi_processor_handle_eject(struct acpi_processor *pr);
@ -104,6 +104,7 @@ static struct acpi_driver acpi_processor_driver = {
.start = acpi_processor_start,
.suspend = acpi_processor_suspend,
.resume = acpi_processor_resume,
.notify = acpi_processor_notify,
},
};
@ -691,7 +692,6 @@ static DEFINE_PER_CPU(void *, processor_device_array);
static int __cpuinit acpi_processor_start(struct acpi_device *device)
{
int result = 0;
acpi_status status = AE_OK;
struct acpi_processor *pr;
struct sys_device *sysdev;
@ -728,9 +728,6 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev"))
return -EFAULT;
status = acpi_install_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY,
acpi_processor_notify, pr);
/* _PDC call should be done before doing anything else (if reqd.). */
arch_acpi_processor_init_pdc(pr);
acpi_processor_set_pdc(pr);
@ -776,18 +773,14 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
return result;
}
static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
static void acpi_processor_notify(struct acpi_device *device, u32 event)
{
struct acpi_processor *pr = data;
struct acpi_device *device = NULL;
struct acpi_processor *pr = acpi_driver_data(device);
int saved;
if (!pr)
return;
if (acpi_bus_get_device(pr->handle, &device))
return;
switch (event) {
case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
saved = pr->performance_platform_limit;
@ -866,7 +859,6 @@ static int acpi_processor_add(struct acpi_device *device)
static int acpi_processor_remove(struct acpi_device *device, int type)
{
acpi_status status = AE_OK;
struct acpi_processor *pr = NULL;
@ -885,9 +877,6 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
acpi_processor_power_exit(pr, device);
status = acpi_remove_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY,
acpi_processor_notify);
sysfs_remove_link(&device->dev.kobj, "sysdev");
acpi_processor_remove_fs(device);