diff --git a/drivers/core/device.c b/drivers/core/device.c
index 3b77d231d3..85fd1fc735 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -135,7 +135,7 @@ int device_bind(struct udevice *parent, const struct driver *drv,
 	return 0;
 
 fail_child_post_bind:
-	if (IS_ENABLED(DM_DEVICE_REMOVE)) {
+	if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
 		if (drv->unbind && drv->unbind(dev)) {
 			dm_warn("unbind() method failed on dev '%s' on error path\n",
 				dev->name);
@@ -143,14 +143,14 @@ fail_child_post_bind:
 	}
 
 fail_bind:
-	if (IS_ENABLED(DM_DEVICE_REMOVE)) {
+	if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
 		if (uclass_unbind_device(dev)) {
 			dm_warn("Failed to unbind dev '%s' on error path\n",
 				dev->name);
 		}
 	}
 fail_uclass_bind:
-	if (IS_ENABLED(DM_DEVICE_REMOVE)) {
+	if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
 		list_del(&dev->sibling_node);
 		if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
 			free(dev->parent_platdata);
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 04e939d6c1..7de817324b 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -277,6 +277,7 @@ int uclass_get_device_tail(struct udevice *dev, int ret,
 	if (ret)
 		return ret;
 
+	assert(dev);
 	ret = device_probe(dev);
 	if (ret)
 		return ret;
@@ -342,6 +343,8 @@ int uclass_first_device(enum uclass_id id, struct udevice **devp)
 
 	*devp = NULL;
 	ret = uclass_find_first_device(id, &dev);
+	if (!dev)
+		return 0;
 	return uclass_get_device_tail(dev, ret, devp);
 }
 
@@ -352,6 +355,8 @@ int uclass_next_device(struct udevice **devp)
 
 	*devp = NULL;
 	ret = uclass_find_next_device(&dev);
+	if (!dev)
+		return 0;
 	return uclass_get_device_tail(dev, ret, devp);
 }
 
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index fd110b3ddc..3d376d7580 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -255,7 +255,6 @@ void debug_uart_init(void)
 	 */
 	baud_divisor = calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK,
 				    CONFIG_BAUDRATE);
-	baud_divisor = 13;
 	serial_out_shift(&com_port->ier, CONFIG_DEBUG_UART_SHIFT,
 			 CONFIG_SYS_NS16550_IER);
 	serial_out_shift(&com_port->mcr, CONFIG_DEBUG_UART_SHIFT, UART_MCRVAL);