ACPI: bus: Add context argument to acpi_dev_install_notify_handler()

Add void *context arrgument to the list of arguments of
acpi_dev_install_notify_handler() and modify it to pass that argument
as context to acpi_install_notify_handler() instead of its first
argument which is problematic in general (for example, if platform
drivers used it, they would rather get struct platform_device pointers
or pointers to their private data from the context arguments of their
notify handlers).

Make all of the current callers of acpi_dev_install_notify_handler()
take this change into account so as to avoid altering the general
functionality.

Co-developed-by: Michal Wilczynski <[e-mail]>
Signed-off-by: Michal Wilczynski <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/ac.c

···
 	register_acpi_notifier(&ac->battery_nb);
 
 	result = acpi_dev_install_notify_handler(device, ACPI_ALL_NOTIFY,
-						 acpi_ac_notify);
+						 acpi_ac_notify, device);
 	if (result)
 		goto err_unregister;
 

drivers/acpi/acpi_video.c

···
 		goto err_del;
 
 	error = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
-						acpi_video_bus_notify);
+						acpi_video_bus_notify, device);
 	if (error)
 		goto err_remove;
 

drivers/acpi/battery.c

···
 	device_init_wakeup(&device->dev, 1);
 
 	result = acpi_dev_install_notify_handler(device, ACPI_ALL_NOTIFY,
-						 acpi_battery_notify);
+						 acpi_battery_notify, device);
 	if (result)
 		goto fail_pm;
 

drivers/acpi/bus.c

···
 
 int acpi_dev_install_notify_handler(struct acpi_device *adev,
 				    u32 handler_type,
-				    acpi_notify_handler handler)
+				    acpi_notify_handler handler, void *context)
 {
 	acpi_status status;
 
 	status = acpi_install_notify_handler(adev->handle, handler_type,
-					     handler, adev);
+					     handler, context);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 

drivers/acpi/hed.c

···
 	hed_handle = device->handle;
 
 	err = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
-					      acpi_hed_notify);
+					      acpi_hed_notify, device);
 	if (err)
 		hed_handle = NULL;
 

drivers/acpi/nfit/core.c

···
 		return rc;
 
 	rc = acpi_dev_install_notify_handler(adev, ACPI_DEVICE_NOTIFY,
-					     acpi_nfit_notify);
+					     acpi_nfit_notify, adev);
 	if (rc)
 		return rc;
 

drivers/acpi/thermal.c

···
 		acpi_device_bid(device), deci_kelvin_to_celsius(tz->temperature));
 
 	result = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
-						 acpi_thermal_notify);
+						 acpi_thermal_notify, device);
 	if (result)
 		goto flush_wq;
 

include/acpi/acpi_bus.h

···
 void acpi_bus_detach_private_data(acpi_handle);
 int acpi_dev_install_notify_handler(struct acpi_device *adev,
 				    u32 handler_type,
-				    acpi_notify_handler handler);
+				    acpi_notify_handler handler, void *context);
 void acpi_dev_remove_notify_handler(struct acpi_device *adev,
 				    u32 handler_type,
 				    acpi_notify_handler handler);