From 2cbd04c32145f9c56698475d665af89ddc2e37e3 Mon Sep 17 00:00:00 2001
From: mrg <mrg@NetBSD.org>
Date: Wed, 9 Feb 2022 07:32:33 +0000
Subject: [PATCH] if the interrupt pipe can't be opened, also print the error.

---
 sys/dev/usb/umcs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/dev/usb/umcs.c b/sys/dev/usb/umcs.c
index 719ecdf0d09f..edffd49f0f6a 100644
--- a/sys/dev/usb/umcs.c
+++ b/sys/dev/usb/umcs.c
@@ -1,4 +1,4 @@
-/* $NetBSD: umcs.c,v 1.17 2021/08/07 16:19:17 thorpej Exp $ */
+/* $NetBSD: umcs.c,v 1.18 2022/02/09 07:32:33 mrg Exp $ */
 /* $FreeBSD: head/sys/dev/usb/serial/umcs.c 260559 2014-01-12 11:44:28Z hselasky $ */
 
 /*-
@@ -41,7 +41,7 @@
  *
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: umcs.c,v 1.17 2021/08/07 16:19:17 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: umcs.c,v 1.18 2022/02/09 07:32:33 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -283,7 +283,7 @@ umcs7840_attach(device_t parent, device_t self, void *aux)
 		    sc->sc_intr_buflen, umcs7840_intr, 100);
 	if (error) {
 		aprint_error_dev(self, "cannot open interrupt pipe "
-		    "(addr %d)\n", intr_addr);
+		    "(addr %d): error %d\n", intr_addr, error);
 		sc->sc_dying = true;
 		return;
 	}