[PATCH v1 06/34] acpi/hed: 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/acpi/hed.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c
index 78d44e3fe129..2a476415817f 100644
--- a/drivers/acpi/hed.c
+++ b/drivers/acpi/hed.c
@@ -42,7 +42,7 @@ EXPORT_SYMBOL_GPL(unregister_acpi_hed_notifier);
  * it is used by HEST Generic Hardware Error Source with notify type
  * SCI.
  */
-static void acpi_hed_notify(struct acpi_device *device, u32 event)
+static void acpi_hed_notify(acpi_handle handle, u32 event, void *data)
 {
 	blocking_notifier_call_chain(&acpi_hed_notify_list, 0, NULL);
 }
@@ -53,11 +53,12 @@ static int acpi_hed_add(struct acpi_device *device)
 	if (hed_handle)
 		return -EINVAL;
 	hed_handle = device->handle;
-	return 0;
+	return acpi_device_install_event_handler(device, ACPI_DEVICE_NOTIFY, acpi_hed_notify);
 }
 
 static void acpi_hed_remove(struct acpi_device *device)
 {
+	acpi_device_remove_event_handler(device, ACPI_DEVICE_NOTIFY, acpi_hed_notify);
 	hed_handle = NULL;
 }
 
@@ -68,7 +69,6 @@ static struct acpi_driver acpi_hed_driver = {
 	.ops = {
 		.add = acpi_hed_add,
 		.remove = acpi_hed_remove,
-		.notify = acpi_hed_notify,
 	},
 };
 module_acpi_driver(acpi_hed_driver);
-- 
2.38.1




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