From fef11cd4451f0f9c6e5bf5b5f2c067a9c54b1216 Mon Sep 17 00:00:00 2001
From: HiFiPhile <admin@hifiphile.com>
Date: Sun, 28 Dec 2025 16:37:12 +0100
Subject: [PATCH] usbd/ncm: reset notification state on link down

Signed-off-by: HiFiPhile <admin@hifiphile.com>
---
 src/class/net/ncm_device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/class/net/ncm_device.c b/src/class/net/ncm_device.c
index 3e19b5f3a..1baef146d 100644
--- a/src/class/net/ncm_device.c
+++ b/src/class/net/ncm_device.c
@@ -940,6 +940,9 @@ bool netd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t
           if (ncm_interface.itf_data_alt == 1) {
             tud_network_recv_renew_r(rhport);
             notification_xmit(rhport, false);
+          } else {
+            // Reset notification state to send link state update when interface is re-activated
+            ncm_interface.notification_xmit_state = NOTIFICATION_CONNECTED;
           }
           tud_control_status(rhport, request);
         } break;