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[src/trunk]: src/sys/dev/nvmm nvmm: use relaxed atomics to read nmachines
details: https://anonhg.NetBSD.org/src/rev/20ac68ac3fa0
branches: trunk
changeset: 942759:20ac68ac3fa0
user: maxv <maxv%NetBSD.org@localhost>
date: Tue Aug 18 17:04:37 2020 +0000
description:
nvmm: use relaxed atomics to read nmachines
diffstat:
sys/dev/nvmm/nvmm.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diffs (27 lines):
diff -r ebf4ad5c3b90 -r 20ac68ac3fa0 sys/dev/nvmm/nvmm.c
--- a/sys/dev/nvmm/nvmm.c Tue Aug 18 17:03:58 2020 +0000
+++ b/sys/dev/nvmm/nvmm.c Tue Aug 18 17:04:37 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: nvmm.c,v 1.34 2020/08/18 17:03:58 maxv Exp $ */
+/* $NetBSD: nvmm.c,v 1.35 2020/08/18 17:04:37 maxv Exp $ */
/*
* Copyright (c) 2018-2020 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nvmm.c,v 1.34 2020/08/18 17:03:58 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nvmm.c,v 1.35 2020/08/18 17:04:37 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -1218,7 +1218,7 @@
static int
nvmm_detach(device_t self, int flags)
{
- if (nmachines > 0)
+ if (atomic_load_relaxed(&nmachines) > 0)
return EBUSY;
nvmm_fini();
return 0;
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