From 7ec0a7290797f57b780f792d12f4bcc19c83aa4f Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 30 Mar 2009 17:48:24 +0000 Subject: 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 CC: Zhang Rui CC: Zhao Yakui CC: Venki Pallipadi CC: Anil S Keshavamurthy Signed-off-by: Len Brown --- drivers/acpi/processor_core.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 8e683f8cc573..45ad3288c5ff 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); -- cgit v1.2.2