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sony-laptop: use .notify method instead of installing handler directly

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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: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2009-04-07 15:37:32 +00:00 committed by Len Brown
parent cddd1f71d9
commit 8037d6e677
1 changed files with 4 additions and 26 deletions
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30
drivers/platform/x86/sony-laptop.c
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@ -914,7 +914,7 @@ static struct sony_nc_event sony_127_events[] = {
/*
* ACPI callbacks
*/
static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
static void sony_nc_notify(struct acpi_device *device, u32 event)
{
u32 ev = event;
@ -933,7 +933,7 @@ static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
struct sony_nc_event *key_event;
if (sony_call_snc_handle(key_handle, 0x200, &result)) {
dprintk("sony_acpi_notify, unable to decode"
dprintk("sony_nc_notify, unable to decode"
" event 0x%.2x 0x%.2x\n", key_handle,
ev);
/* restore the original event */
@ -968,7 +968,7 @@ static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
} else
sony_laptop_report_input_event(ev);
dprintk("sony_acpi_notify, event: 0x%.2x\n", ev);
dprintk("sony_nc_notify, event: 0x%.2x\n", ev);
acpi_bus_generate_proc_event(sony_nc_acpi_device, 1, ev);
}
@ -1276,15 +1276,6 @@ static int sony_nc_add(struct acpi_device *device)
goto outwalk;
}
status = acpi_install_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify, NULL);
if (ACPI_FAILURE(status)) {
printk(KERN_WARNING DRV_PFX "unable to install notify handler (%u)\n", status);
result = -ENODEV;
goto outinput;
}
if (acpi_video_backlight_support()) {
printk(KERN_INFO DRV_PFX "brightness ignored, must be "
"controlled by ACPI video driver\n");
@ -1362,13 +1353,6 @@ static int sony_nc_add(struct acpi_device *device)
if (sony_backlight_device)
backlight_device_unregister(sony_backlight_device);
status = acpi_remove_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify);
if (ACPI_FAILURE(status))
printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
outinput:
sony_laptop_remove_input();
outwalk:
@ -1378,7 +1362,6 @@ static int sony_nc_add(struct acpi_device *device)
static int sony_nc_remove(struct acpi_device *device, int type)
{
acpi_status status;
struct sony_nc_value *item;
if (sony_backlight_device)
@ -1386,12 +1369,6 @@ static int sony_nc_remove(struct acpi_device *device, int type)
sony_nc_acpi_device = NULL;
status = acpi_remove_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify);
if (ACPI_FAILURE(status))
printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
for (item = sony_nc_values; item->name; ++item) {
device_remove_file(&sony_pf_device->dev, &item->devattr);
}
@ -1425,6 +1402,7 @@ static struct acpi_driver sony_nc_driver = {
.add = sony_nc_add,
.remove = sony_nc_remove,
.resume = sony_nc_resume,
.notify = sony_nc_notify,
},
};