1 files changed, 5 insertions, 18 deletions

diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 84d042796d2e..344cc9e741c1 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -41,7 +41,6 @@ static int host1x_subdev_add(struct host1x_device *device,
 			     struct device_node *np)
 {
 	struct host1x_subdev *subdev;
-	struct device_node *child;
 	int err;
 
 	subdev = kzalloc(sizeof(*subdev), GFP_KERNEL);
@@ -56,13 +55,12 @@ static int host1x_subdev_add(struct host1x_device *device,
 	mutex_unlock(&device->subdevs_lock);
 
 	/* recursively add children */
-	for_each_child_of_node(np, child) {
+	for_each_child_of_node_scoped(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;
 			}
 		}
@@ -90,17 +88,14 @@ static void host1x_subdev_del(struct host1x_subdev *subdev)
 static int host1x_device_parse_dt(struct host1x_device *device,
 				  struct host1x_driver *driver)
 {
-	struct device_node *np;
 	int err;
 
-	for_each_child_of_node(device->dev.parent->of_node, np) {
+	for_each_child_of_node_scoped(device->dev.parent->of_node, np) {
 		if (of_match_node(driver->subdevs, np) &&
 		    of_device_is_available(np)) {
 			err = host1x_subdev_add(device, driver, np);
-			if (err < 0) {
-				of_node_put(np);
+			if (err < 0)
 				return err;
-			}
 		}
 	}
 
@@ -333,7 +328,7 @@ static int host1x_del_client(struct host1x *host1x,
 	return -ENODEV;
 }
 
-static int host1x_device_match(struct device *dev, struct device_driver *drv)
+static int host1x_device_match(struct device *dev, const struct device_driver *drv)
 {
 	return strcmp(dev_name(dev), drv->name) == 0;
 }
@@ -351,11 +346,6 @@ static int host1x_device_uevent(const struct device *dev,
 	return 0;
 }
 
-static int host1x_dma_configure(struct device *dev)
-{
-	return of_dma_configure(dev, dev->of_node, true);
-}
-
 static const struct dev_pm_ops host1x_device_pm_ops = {
 	.suspend = pm_generic_suspend,
 	.resume = pm_generic_resume,
@@ -365,11 +355,10 @@ static const struct dev_pm_ops host1x_device_pm_ops = {
 	.restore = pm_generic_restore,
 };
 
-struct bus_type host1x_bus_type = {
+const struct bus_type host1x_bus_type = {
 	.name = "host1x",
 	.match = host1x_device_match,
 	.uevent = host1x_device_uevent,
-	.dma_configure = host1x_dma_configure,
 	.pm = &host1x_device_pm_ops,
 };
 
@@ -458,8 +447,6 @@ static int host1x_device_add(struct host1x *host1x,
 	device->dev.bus = &host1x_bus_type;
 	device->dev.parent = host1x->dev;
 
-	of_dma_configure(&device->dev, host1x->dev->of_node, true);
-
 	device->dev.dma_parms = &device->dma_parms;
 	dma_set_max_seg_size(&device->dev, UINT_MAX);