Currently logic for installing notifications from ACPI devices is
implemented using notify callback in struct acpi_driver. Preparations
are being made to replace acpi_driver with more generic struct
platform_driver, which doesn't contain notify callback. Furthermore
as of now handlers are being called indirectly through
acpi_notify_device(), which decreases performance.
Call acpi_device_install_event_handler() at the end of .add() callback.
Call acpi_device_remove_event_handler() at the beginning of .remove()
callback. Change arguments passed to the notify callback to match with
what's required by acpi_device_install_event_handler().
Signed-off-by: Michal Wilczynski <michal.wilczynski@xxxxxxxxx>
---
drivers/platform/x86/toshiba_bluetooth.c | 30 +++++++++++++++++-------
1 file changed, 22 insertions(+), 8 deletions(-)
diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c
index d8f81962a240..a717bd5fcc88 100644
--- a/drivers/platform/x86/toshiba_bluetooth.c
+++ b/drivers/platform/x86/toshiba_bluetooth.c
@@ -37,7 +37,7 @@ struct toshiba_bluetooth_dev {
static int toshiba_bt_rfkill_add(struct acpi_device *device);
static void toshiba_bt_rfkill_remove(struct acpi_device *device);
-static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event);
+static void toshiba_bt_rfkill_notify(acpi_handle handle, u32 event, void *data);
static const struct acpi_device_id bt_device_ids[] = {
{ "TOS6205", 0},
@@ -57,7 +57,6 @@ static struct acpi_driver toshiba_bt_rfkill_driver = {
.ops = {
.add = toshiba_bt_rfkill_add,
.remove = toshiba_bt_rfkill_remove,
- .notify = toshiba_bt_rfkill_notify,
},
.owner = THIS_MODULE,
.drv.pm = &toshiba_bt_pm,
@@ -204,9 +203,12 @@ static const struct rfkill_ops rfk_ops = {
};
/* ACPI driver functions */
-static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event)
+static void toshiba_bt_rfkill_notify(acpi_handle handle, u32 event, void *data)
{
- struct toshiba_bluetooth_dev *bt_dev = acpi_driver_data(device);
+ struct toshiba_bluetooth_dev *bt_dev;
+ struct acpi_device *device = data;
+
+ bt_dev = acpi_driver_data(device);
if (toshiba_bluetooth_sync_status(bt_dev))
return;
@@ -263,8 +265,8 @@ static int toshiba_bt_rfkill_add(struct acpi_device *device)
bt_dev);
if (!bt_dev->rfk) {
pr_err("Unable to allocate rfkill device\n");
- kfree(bt_dev);
- return -ENOMEM;
+ result = -ENOMEM;
+ goto fail_allocate;
}
rfkill_set_hw_state(bt_dev->rfk, !bt_dev->killswitch);
@@ -272,10 +274,20 @@ static int toshiba_bt_rfkill_add(struct acpi_device *device)
result = rfkill_register(bt_dev->rfk);
if (result) {
pr_err("Unable to register rfkill device\n");
- rfkill_destroy(bt_dev->rfk);
- kfree(bt_dev);
+ goto fail_register;
}
+ result = acpi_device_install_event_handler(device, ACPI_DEVICE_NOTIFY,
+ toshiba_bt_rfkill_notify);
+ if (result)
+ goto fail_register;
+
+ return 0;
+
+fail_register:
+ rfkill_destroy(bt_dev->rfk);
+fail_allocate:
+ kfree(bt_dev);
return result;
}
@@ -283,6 +295,8 @@ static void toshiba_bt_rfkill_remove(struct acpi_device *device)
{
struct toshiba_bluetooth_dev *bt_dev = acpi_driver_data(device);
+ acpi_device_remove_event_handler(device, ACPI_DEVICE_NOTIFY, toshiba_bt_rfkill_notify);
+
/* clean up */
if (bt_dev->rfk) {
rfkill_unregister(bt_dev->rfk);
--
2.40.1
