[src/trunk]: src/sys/external/bsd/drm2/dist/drm ACCESS_ONCE -> __insn_barrier

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ea92c497863c
branches:  trunk
changeset: 992498:ea92c497863c
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Mon Aug 27 06:48:01 2018 +0000

description:
ACCESS_ONCE -> __insn_barrier

diffstat:

 sys/external/bsd/drm2/dist/drm/drm_atomic.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r dde2f0377383 -r ea92c497863c sys/external/bsd/drm2/dist/drm/drm_atomic.c
--- a/sys/external/bsd/drm2/dist/drm/drm_atomic.c       Mon Aug 27 06:47:51 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/drm_atomic.c       Mon Aug 27 06:48:01 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: drm_atomic.c,v 1.3 2018/08/27 06:47:35 riastradh Exp $ */
+/*     $NetBSD: drm_atomic.c,v 1.4 2018/08/27 06:48:01 riastradh Exp $ */
 
 /*
  * Copyright (C) 2014 Red Hat
@@ -29,7 +29,7 @@
 
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_atomic.c,v 1.3 2018/08/27 06:47:35 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_atomic.c,v 1.4 2018/08/27 06:48:01 riastradh Exp $");
 
 #include <linux/export.h>
 
@@ -72,7 +72,8 @@
         */
        state->allow_modeset = true;
 
-       state->num_connector = ACCESS_ONCE(dev->mode_config.num_connector);
+       state->num_connector = dev->mode_config.num_connector;
+       __insn_barrier();
 
        state->crtcs = kcalloc(dev->mode_config.num_crtc,
                               sizeof(*state->crtcs), GFP_KERNEL);