media: ipu-bridge: Move graph checking to IPU bridge

Move checking the graph to the IPU bridge. This way the caller won't need
to do it.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Author: Sakari Ailus

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

@@ -2,6 +2,7 @@
 /* Author: Dan Scally <djrscally@gmail.com> */
 
 #include <linux/acpi.h>
+#include <linux/cleanup.h>
 #include <linux/device.h>
 #include <linux/i2c.h>
 #include <linux/mei_cl_bus.h>
@@ -749,6 +750,22 @@ static int ipu_bridge_ivsc_is_ready(void)
 	return ready;
 }
 
+static int ipu_bridge_check_fwnode_graph(struct fwnode_handle *fwnode)
+{
+	struct fwnode_handle *endpoint;
+
+	if (IS_ERR_OR_NULL(fwnode))
+		return -EINVAL;
+
+	endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
+	if (endpoint) {
+		fwnode_handle_put(endpoint);
+		return 0;
+	}
+
+	return ipu_bridge_check_fwnode_graph(fwnode->secondary);
+}
+
 int ipu_bridge_init(struct device *dev,
 		    ipu_parse_sensor_fwnode_t parse_sensor_fwnode)
 {
@@ -757,6 +774,9 @@ int ipu_bridge_init(struct device *dev,
 	unsigned int i;
 	int ret;
 
+	if (!ipu_bridge_check_fwnode_graph(dev_fwnode(dev)))
+		return 0;
+
 	if (!ipu_bridge_ivsc_is_ready())
 		return -EPROBE_DEFER;
 

drivers/media/pci/intel/ipu3/ipu3-cio2.c

@@ -1667,29 +1667,12 @@ static void cio2_queues_exit(struct cio2_device *cio2)
 		cio2_queue_exit(cio2, &cio2->queue[i]);
 }
 
-static int cio2_check_fwnode_graph(struct fwnode_handle *fwnode)
-{
-	struct fwnode_handle *endpoint;
-
-	if (IS_ERR_OR_NULL(fwnode))
-		return -EINVAL;
-
-	endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
-	if (endpoint) {
-		fwnode_handle_put(endpoint);
-		return 0;
-	}
-
-	return cio2_check_fwnode_graph(fwnode->secondary);
-}
-
 /**************** PCI interface ****************/
 
 static int cio2_pci_probe(struct pci_dev *pci_dev,
 			  const struct pci_device_id *id)
 {
 	struct device *dev = &pci_dev->dev;
-	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct cio2_device *cio2;
 	int r;
 
@@ -1698,17 +1681,9 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 	 * if the device has no endpoints then we can try to build those as
 	 * software_nodes parsed from SSDB.
 	 */
-	r = cio2_check_fwnode_graph(fwnode);
-	if (r) {
-		if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary)) {
-			dev_err(dev, "fwnode graph has no endpoints connected\n");
-			return -EINVAL;
-		}
-
-		r = ipu_bridge_init(dev, ipu_bridge_parse_ssdb);
-		if (r)
-			return r;
-	}
+	r = ipu_bridge_init(dev, ipu_bridge_parse_ssdb);
+	if (r)
+		return r;
 
 	cio2 = devm_kzalloc(dev, sizeof(*cio2), GFP_KERNEL);
 	if (!cio2)