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@xxxxxx>
CC: Zhang Rui <rui.zhang@xxxxxxxxx>
CC: Zhao Yakui <yakui.zhao@xxxxxxxxx>
CC: Venki Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
CC: Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>
---
drivers/acpi/processor_core.c | 19 ++++---------------
1 files changed, 4 insertions(+), 15 deletions(-)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 0cc2fd3..0e97d70 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,
},
};
@@ -666,7 +667,6 @@ 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;
@@ -703,9 +703,6 @@ 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);
@@ -751,18 +748,14 @@ 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;
@@ -841,7 +834,6 @@ 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;
@@ -860,9 +852,6 @@ 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);
--
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