media: ipu-bridge: Store dev pointer in struct ipu_bridge

Store the dev pointer in struct ipu_bridge instead of passing it
around 3 levels deep.

This takes up slightly more memory but further patches in this series
add more data which needs to be passed around making passing
everything as arguments cumbersome and those further patches also
add data to struct ipu_bridge.

To be consistent with these upcoming patches also add
the dev pointer to struct ipu_bridge.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/pci/intel/ipu-bridge.c

@@ -286,8 +286,7 @@ static void ipu_bridge_unregister_sensors(struct ipu_bridge *bridge)
 }
 
 static int ipu_bridge_connect_sensor(const struct ipu_sensor_config *cfg,
-				     struct ipu_bridge *bridge,
-				     struct device *dev)
+				     struct ipu_bridge *bridge)
 {
 	struct fwnode_handle *fwnode, *primary;
 	struct ipu_sensor *sensor;
@@ -301,7 +300,7 @@ static int ipu_bridge_connect_sensor(const struct ipu_sensor_config *cfg,
 
 		if (bridge->n_sensors >= IPU_MAX_PORTS) {
 			acpi_dev_put(adev);
-			dev_err(dev, "Exceeded available IPU ports\n");
+			dev_err(bridge->dev, "Exceeded available IPU ports\n");
 			return -EINVAL;
 		}
 
@@ -361,7 +360,7 @@ static int ipu_bridge_connect_sensor(const struct ipu_sensor_config *cfg,
 
 		ipu_bridge_instantiate_vcm_i2c_client(sensor);
 
-		dev_info(dev, "Found supported sensor %s\n",
+		dev_info(bridge->dev, "Found supported sensor %s\n",
 			 acpi_dev_name(adev));
 
 		bridge->n_sensors++;
@@ -378,8 +377,7 @@ static int ipu_bridge_connect_sensor(const struct ipu_sensor_config *cfg,
 	return ret;
 }
 
-static int ipu_bridge_connect_sensors(struct ipu_bridge *bridge,
-				      struct device *dev)
+static int ipu_bridge_connect_sensors(struct ipu_bridge *bridge)
 {
 	unsigned int i;
 	int ret;
@@ -388,7 +386,7 @@ static int ipu_bridge_connect_sensors(struct ipu_bridge *bridge,
 		const struct ipu_sensor_config *cfg =
 			&ipu_supported_sensors[i];
 
-		ret = ipu_bridge_connect_sensor(cfg, bridge, dev);
+		ret = ipu_bridge_connect_sensor(cfg, bridge);
 		if (ret)
 			goto err_unregister_sensors;
 	}
@@ -451,6 +449,7 @@ int ipu_bridge_init(struct device *dev)
 	strscpy(bridge->ipu_node_name, IPU_HID,
 		sizeof(bridge->ipu_node_name));
 	bridge->ipu_hid_node.name = bridge->ipu_node_name;
+	bridge->dev = dev;
 
 	ret = software_node_register(&bridge->ipu_hid_node);
 	if (ret < 0) {
@@ -468,7 +467,7 @@ int ipu_bridge_init(struct device *dev)
 	for (i = 0; i < IPU_MAX_LANES; i++)
 		bridge->data_lanes[i] = i + 1;
 
-	ret = ipu_bridge_connect_sensors(bridge, dev);
+	ret = ipu_bridge_connect_sensors(bridge);
 	if (ret || bridge->n_sensors == 0)
 		goto err_unregister_ipu;
 

drivers/media/pci/intel/ipu-bridge.h

@@ -136,6 +136,7 @@ struct ipu_sensor {
 };
 
 struct ipu_bridge {
+	struct device *dev;
 	char ipu_node_name[ACPI_ID_LEN];
 	struct software_node ipu_hid_node;
 	u32 data_lanes[4];