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/acpi/acpi_video.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 62f4364e4460..f1623fcc3973 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -77,7 +77,7 @@ static DEFINE_MUTEX(video_list_lock);
static LIST_HEAD(video_bus_head);
static int acpi_video_bus_add(struct acpi_device *device);
static void acpi_video_bus_remove(struct acpi_device *device);
-static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
+static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data);
/*
* Indices in the _BCL method response: the first two items are special,
@@ -104,7 +104,6 @@ static struct acpi_driver acpi_video_bus = {
.ops = {
.add = acpi_video_bus_add,
.remove = acpi_video_bus_remove,
- .notify = acpi_video_bus_notify,
},
};
@@ -1527,12 +1526,15 @@ static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
acpi_osi_is_win8() ? 0 : 1);
}
-static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
+static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_video_bus *video = acpi_driver_data(device);
+ struct acpi_device *device = data;
+ struct acpi_video_bus *video;
struct input_dev *input;
int keycode = 0;
+ video = acpi_driver_data(device);
+
if (!video || !video->input)
return;
@@ -2053,6 +2055,11 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_video_bus_add_notify_handler(video);
+ error = acpi_device_install_event_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_video_bus_notify);
+ if (error)
+ goto err_put_video;
+
return 0;
err_put_video:
@@ -2075,6 +2082,7 @@ static void acpi_video_bus_remove(struct acpi_device *device)
video = acpi_driver_data(device);
+ acpi_device_remove_event_handler(device, ACPI_DEVICE_NOTIFY, acpi_video_bus_notify);
mutex_lock(&video_list_lock);
list_del(&video->entry);
mutex_unlock(&video_list_lock);
--
2.40.1
