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 | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 62b71e8e3567..bd6ada963d88 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]++;
@@ -1423,6 +1426,11 @@ static int eeepc_acpi_add(struct acpi_device *device)
goto fail_rfkill;
eeepc_device_present = true;
+ result = acpi_device_install_event_handler(device, ACPI_ALL_NOTIFY,
+ eeepc_acpi_notify);
+ if (result)
+ goto fail_rfkill;
+
return 0;
fail_rfkill:
@@ -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
