Module Name: src
Committed By: cegger
Date: Wed May 6 07:27:43 UTC 2009
Modified Files:
src/sys/dev/ic: com.c
Log Message:
add KASSERT to identify when PR kern/40734 happens again.
It happened to me twice and to Emmanuel Dreyfus (reported on port-amd64 ML)
To generate a diff of this commit:
cvs rdiff -u -r1.287 -r1.288 src/sys/dev/ic/com.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/ic/com.c
diff -u src/sys/dev/ic/com.c:1.287 src/sys/dev/ic/com.c:1.288
--- src/sys/dev/ic/com.c:1.287 Sat Jan 3 03:43:22 2009
+++ src/sys/dev/ic/com.c Wed May 6 07:27:42 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: com.c,v 1.287 2009/01/03 03:43:22 yamt Exp $ */
+/* $NetBSD: com.c,v 1.288 2009/05/06 07:27:42 cegger Exp $ */
/*-
* Copyright (c) 1998, 1999, 2004, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.287 2009/01/03 03:43:22 yamt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.288 2009/05/06 07:27:42 cegger Exp $");
#include "opt_com.h"
#include "opt_ddb.h"
@@ -1861,6 +1861,8 @@
if (COM_ISALIVE(sc) == 0)
return (0);
+ KASSERT(regsp != NULL);
+
mutex_spin_enter(&sc->sc_lock);
iir = CSR_READ_1(regsp, COM_REG_IIR);
if (ISSET(iir, IIR_NOPEND)) {
