[PATCH v1 4/7] platform/x86: toshiba_bluetooth: Register ACPI notify handler directly

["Rafael J. Wysocki" <rafael@kernel.org>]

From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>

To facilitate subsequent conversion of the driver to a platform one,
make it install an ACPI notify handler directly instead of using
a .notify() callback in struct acpi_driver.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/platform/x86/toshiba_bluetooth.c | 32 ++++++++++++++++++------
 1 file changed, 24 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c
index e587beef05b9..3824c2beaf11 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,
 			},
 	.drv.pm =	&toshiba_bt_pm,
 };
@@ -203,9 +202,9 @@ 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 = data;
 
 	if (toshiba_bluetooth_sync_status(bt_dev))
 		return;
@@ -262,8 +261,8 @@ 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 err_free_bt_dev;
 	}
 
 	rfkill_set_hw_state(bt_dev->rfk, !bt_dev->killswitch);
@@ -271,10 +270,24 @@ 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 err_rfkill_destroy;
 	}
 
+	result = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
+						 toshiba_bt_rfkill_notify, bt_dev);
+	if (result) {
+		pr_err("Unable to register ACPI notify handler\n");
+		goto err_rfkill_unregister;
+	}
+
+	return 0;
+
+err_rfkill_unregister:
+	rfkill_unregister(bt_dev->rfk);
+err_rfkill_destroy:
+	rfkill_destroy(bt_dev->rfk);
+err_free_bt_dev:
+	kfree(bt_dev);
 	return result;
 }
 
@@ -283,6 +296,9 @@ static void toshiba_bt_rfkill_remove(struct acpi_device *device)
 	struct toshiba_bluetooth_dev *bt_dev = acpi_driver_data(device);
 
 	/* clean up */
+	acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
+				       toshiba_bt_rfkill_notify);
+
 	if (bt_dev->rfk) {
 		rfkill_unregister(bt_dev->rfk);
 		rfkill_destroy(bt_dev->rfk);
-- 
2.51.0