device: prevent interface up/down calls for external devices

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

1 files changed, 3 insertions, 0 deletions

diff --git a/device.c b/device.c
index f484c28..7d606c6 100644
--- a/device.c
+++ b/device.c
@@ -61,6 +61,9 @@ void device_unlock(void)
 
 static int set_device_state(struct device *dev, bool state)
 {
+	if (dev->external)
+		return 0;
+
 	if (state)
 		system_if_up(dev);
 	else