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/panasonic-laptop.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index cf845ee1c7b1..37be1047b50d 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -833,9 +833,12 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
pr_err("Unknown hotkey event: 0x%04llx\n", result);
}
-static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event)
+static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data)
{
- struct pcc_acpi *pcc = acpi_driver_data(device);
+ struct acpi_device *device = data;
+ struct pcc_acpi *pcc;
+
+ pcc = acpi_driver_data(device);
switch (event) {
case HKEY_NOTIFY:
@@ -1049,7 +1052,13 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
}
i8042_install_filter(panasonic_i8042_filter);
- return 0;
+
+ result = acpi_device_install_event_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_pcc_hotkey_notify);
+ if (result)
+ goto out_platform;
+
+ return result;
out_platform:
platform_device_unregister(pcc->platform);
@@ -1072,6 +1081,8 @@ static void acpi_pcc_hotkey_remove(struct acpi_device *device)
if (!device || !pcc)
return;
+ acpi_device_remove_event_handler(device, ACPI_DEVICE_NOTIFY, acpi_pcc_hotkey_notify);
+
i8042_remove_filter(panasonic_i8042_filter);
if (pcc->platform) {
--
2.40.1
