From 2934783fa80de2854d9527ae11db85c47ac65a91 Mon Sep 17 00:00:00 2001
From: ShengYi Hung <aokblast@FreeBSD.org>
Date: Fri, 29 May 2026 23:09:52 +0800
Subject: [PATCH] usb: Add missing unsetup while detaching uchcom

Reviewed by:    christos
MFC after:      2 weeks
Sponsored by:   The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D57329
---
 sys/dev/usb/serial/uchcom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/dev/usb/serial/uchcom.c b/sys/dev/usb/serial/uchcom.c
index fdc5515fa72..ff1ac8897c9 100644
--- a/sys/dev/usb/serial/uchcom.c
+++ b/sys/dev/usb/serial/uchcom.c
@@ -404,6 +404,7 @@ uchcom_detach(device_t dev)
 	DPRINTFN(11, "\n");
 
 	ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
+	usbd_transfer_unsetup(&sc->sc_intr_xfer, 1);
 	usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
 
 	device_claim_softc(dev);