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 <michal.wilczynski@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

8 files changed, 9 insertions, 9 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 225dc6818751..aac3e561790c 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -257,7 +257,7 @@ static int acpi_ac_add(struct acpi_device *device)
 	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;
 
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index b411948594ff..0b7a01f38b65 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -2062,7 +2062,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
 		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;
 
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 969bf81e8d54..b379401ff1c2 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -1214,7 +1214,7 @@ static int acpi_battery_add(struct acpi_device *device)
 	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;
 
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index f41dda2d3493..88811d813a47 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -556,12 +556,12 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device,
 
 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;
 
diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c
index 46c6f8c35b43..7652515a6be1 100644
--- a/drivers/acpi/hed.c
+++ b/drivers/acpi/hed.c
@@ -57,7 +57,7 @@ static int acpi_hed_add(struct acpi_device *device)
 	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;
 
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index f0e6738ae3c9..942b84d94078 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -3391,7 +3391,7 @@ static int acpi_nfit_add(struct acpi_device *adev)
 		return rc;
 
 	rc = acpi_dev_install_notify_handler(adev, ACPI_DEVICE_NOTIFY,
-					     acpi_nfit_notify);
+					     acpi_nfit_notify, adev);
 	if (rc)
 		return rc;
 
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 312730f8272e..609bc38f75ba 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -956,7 +956,7 @@ static int acpi_thermal_add(struct acpi_device *device)
 		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;
 
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 254685085c82..e49a143ac060 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -517,7 +517,7 @@ int acpi_bus_attach_private_data(acpi_handle, void *);
 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);