CVS commit: [netbsd-9] src/sys/dev/usb

[Martin Husemann]

Module Name:    src
Committed By:   martin
Date:           Sat Dec 12 12:56:40 UTC 2020

Modified Files:
        src/sys/dev/usb [netbsd-9]: ucom.c

Log Message:
Pull up following revision(s) (requested by mrg in ticket #1147):

        sys/dev/usb/ucom.c: revision 1.128

properly wait for refcounts to drain.
fixes panic at detach that jmnceill saw.

XXX: pullup-[89].


To generate a diff of this commit:
cvs rdiff -u -r1.125 -r1.125.2.1 src/sys/dev/usb/ucom.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.


Modified files:

Index: src/sys/dev/usb/ucom.c
diff -u src/sys/dev/usb/ucom.c:1.125 src/sys/dev/usb/ucom.c:1.125.2.1
--- src/sys/dev/usb/ucom.c:1.125	Thu May  9 02:43:35 2019
+++ src/sys/dev/usb/ucom.c	Sat Dec 12 12:56:40 2020
@@ -1,4 +1,4 @@
-/*	$NetBSD: ucom.c,v 1.125 2019/05/09 02:43:35 mrg Exp $	*/
+/*	$NetBSD: ucom.c,v 1.125.2.1 2020/12/12 12:56:40 martin Exp $	*/
 
 /*
  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.125 2019/05/09 02:43:35 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.125.2.1 2020/12/12 12:56:40 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -434,7 +434,7 @@ ucom_detach(device_t self, int flags)
 	}
 
 	sc->sc_refcnt--;
-	while (sc->sc_refcnt > 0) {
+	while (sc->sc_refcnt >= 0) {
 		/* Wake up anyone waiting */
 		if (tp != NULL) {
 			mutex_spin_enter(&tty_lock);