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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-03-30 17:48:24 +0000
committerLen Brown <len.brown@intel.com>2009-04-05 02:25:07 -0400
commit7ec0a7290797f57b780f792d12f4bcc19c83aa4f (patch)
tree30826d0452f43040f938f85fcd0e10f507df7a2f /drivers/acpi
parent373cfc360ec773be2f7615e59a19f3313255db7c (diff)
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>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/processor_core.c19
1 files changed, 4 insertions, 15 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 8e683f8cc57..45ad3288c5f 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -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);