gpu: host1x: Support sub-devices recursively (25ae30d2) · Commits · 戴 / test

drivers/gpu/host1x/bus.c

+17 −1

Original line number	Diff line number	Diff line
		@@ -45,9 +45,12 @@ struct host1x_subdev {
		* @np: device node
		*/
		static int host1x_subdev_add(struct host1x_device *device,
		struct host1x_driver *driver,
		struct device_node *np)
		{
		struct host1x_subdev *subdev;
		struct device_node *child;
		int err;

		subdev = kzalloc(sizeof(*subdev), GFP_KERNEL);
		if (!subdev)
		@@ -60,6 +63,19 @@ static int host1x_subdev_add(struct host1x_device *device,
		list_add_tail(&subdev->list, &device->subdevs);
		mutex_unlock(&device->subdevs_lock);

		/* recursively add children */
		for_each_child_of_node(np, child) {
		if (of_match_node(driver->subdevs, child) &&
		of_device_is_available(child)) {
		err = host1x_subdev_add(device, driver, child);
		if (err < 0) {
		/* XXX cleanup? */
		of_node_put(child);
		return err;
		}
		}
		}

		return 0;
		}

		@@ -88,7 +104,7 @@ static int host1x_device_parse_dt(struct host1x_device *device,
		for_each_child_of_node(device->dev.parent->of_node, np) {
		if (of_match_node(driver->subdevs, np) &&
		of_device_is_available(np)) {
		err = host1x_subdev_add(device, np);
		err = host1x_subdev_add(device, driver, np);
		if (err < 0) {
		of_node_put(np);
		return err;