[PATCH v3 20/34] platform/x86/eeepc-laptop: Move handler installing logic to driver

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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/eeepc-laptop.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 62b71e8e3567..65c3101ea431 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -1204,12 +1204,15 @@ static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
 		pr_info("Unknown key %x pressed\n", event);
 }
 
-static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
+static void eeepc_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
-	struct eeepc_laptop *eeepc = acpi_driver_data(device);
 	int old_brightness, new_brightness;
+	struct acpi_device *device = data;
+	struct eeepc_laptop *eeepc;
 	u16 count;
 
+	eeepc = acpi_driver_data(device);
+
 	if (event > ACPI_MAX_SYS_NOTIFY)
 		return;
 	count = eeepc->event_count[event % 128]++;
@@ -1423,7 +1426,12 @@ static int eeepc_acpi_add(struct acpi_device *device)
 		goto fail_rfkill;
 
 	eeepc_device_present = true;
-	return 0;
+	result = acpi_device_install_event_handler(device, ACPI_ALL_NOTIFY,
+						   eeepc_acpi_notify);
+	if (result)
+		goto fail_rfkill;
+
+	return result;
 
 fail_rfkill:
 	eeepc_led_exit(eeepc);
@@ -1444,6 +1452,8 @@ static void eeepc_acpi_remove(struct acpi_device *device)
 {
 	struct eeepc_laptop *eeepc = acpi_driver_data(device);
 
+	acpi_device_remove_event_handler(device, ACPI_ALL_NOTIFY,
+					 eeepc_acpi_notify);
 	eeepc_backlight_exit(eeepc);
 	eeepc_rfkill_exit(eeepc);
 	eeepc_input_exit(eeepc);
@@ -1465,11 +1475,9 @@ static struct acpi_driver eeepc_acpi_driver = {
 	.class = EEEPC_ACPI_CLASS,
 	.owner = THIS_MODULE,
 	.ids = eeepc_device_ids,
-	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = eeepc_acpi_add,
 		.remove = eeepc_acpi_remove,
-		.notify = eeepc_acpi_notify,
 	},
 };
 
-- 
2.40.1




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