device_add_user: return immediately if the new device is the same as the old device

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/device.c b/device.c
index e635b05..53971c8 100644
--- a/device.c
+++ b/device.c
@@ -408,6 +408,9 @@ void device_add_user(struct device_user *dep, struct device *dev)
 {
 	struct safe_list *head;
 
+	if (dep->dev == dev)
+		return;
+
 	if (dep->dev)
 		device_remove_user(dep);