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/classmate-laptop.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
index 2edaea2492df..f8f84ee9de33 100644
--- a/drivers/platform/x86/classmate-laptop.c
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -180,8 +180,9 @@ static acpi_status cmpc_get_accel_v4(acpi_handle handle,
return status;
}
-static void cmpc_accel_handler_v4(struct acpi_device *dev, u32 event)
+static void cmpc_accel_handler_v4(acpi_handle handle, u32 event, void *data)
{
+ struct acpi_device *dev = data;
if (event == 0x81) {
int16_t x, y, z;
acpi_status status;
@@ -407,7 +408,12 @@ static int cmpc_accel_add_v4(struct acpi_device *acpi)
inputdev = dev_get_drvdata(&acpi->dev);
dev_set_drvdata(&inputdev->dev, accel);
- return 0;
+ error = acpi_device_install_event_handler(acpi, ACPI_DEVICE_NOTIFY,
+ cmpc_accel_handler_v4);
+ if (error)
+ goto failed_input;
+
+ return error;
failed_input:
device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
@@ -420,6 +426,7 @@ static int cmpc_accel_add_v4(struct acpi_device *acpi)
static void cmpc_accel_remove_v4(struct acpi_device *acpi)
{
+ acpi_device_remove_event_handler(acpi, ACPI_DEVICE_NOTIFY, cmpc_accel_handler_v4);
device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
cmpc_remove_acpi_notify_device(acpi);
@@ -1071,7 +1078,6 @@ static struct acpi_driver cmpc_keys_acpi_driver = {
.ops = {
.add = cmpc_keys_add,
.remove = cmpc_keys_remove,
- .notify = cmpc_keys_handler,
}
};
--
2.40.1
