Module Name: src
Committed By: mrg
Date: Mon Oct 26 12:24:10 UTC 2020
Modified Files:
src/sys/dev/usb: ucom.c
Log Message:
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 -r1.127 -r1.128 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:1.127 src/sys/dev/usb/ucom.c:1.128
--- src/sys/dev/usb/ucom.c:1.127 Sat Mar 14 02:35:33 2020
+++ src/sys/dev/usb/ucom.c Mon Oct 26 12:24:10 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: ucom.c,v 1.127 2020/03/14 02:35:33 christos Exp $ */
+/* $NetBSD: ucom.c,v 1.128 2020/10/26 12:24:10 mrg Exp $ */
/*
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.127 2020/03/14 02:35:33 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.128 2020/10/26 12:24:10 mrg 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);
