[src/trunk]: src/sys/external/bsd/drm2/dist/drm/i915 Lock around use of irq_q...

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

details:   https://anonhg.NetBSD.org/src/rev/e29414d94bf6
branches:  trunk
changeset: 835402:e29414d94bf6
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Mon Aug 27 14:49:05 2018 +0000

description:
Lock around use of irq_queue.

diffstat:

 sys/external/bsd/drm2/dist/drm/i915/i915_gpu_error.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 86951200f94a -r e29414d94bf6 sys/external/bsd/drm2/dist/drm/i915/i915_gpu_error.c
--- a/sys/external/bsd/drm2/dist/drm/i915/i915_gpu_error.c      Mon Aug 27 14:48:47 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/i915_gpu_error.c      Mon Aug 27 14:49:05 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: i915_gpu_error.c,v 1.8 2018/08/27 07:09:28 riastradh Exp $     */
+/*     $NetBSD: i915_gpu_error.c,v 1.9 2018/08/27 14:49:05 riastradh Exp $     */
 
 /*
  * Copyright (c) 2008 Intel Corporation
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: i915_gpu_error.c,v 1.8 2018/08/27 07:09:28 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: i915_gpu_error.c,v 1.9 2018/08/27 14:49:05 riastradh Exp $");
 
 #include <sys/param.h>
 
@@ -929,8 +929,10 @@
        }
 
 #ifdef __NetBSD__
+       spin_lock(&dev_priv->irq_lock);
        ering->waiting = DRM_SPIN_WAITERS_P(&ring->irq_queue,
            &dev_priv->irq_lock);
+       spin_unlock(&dev_priv->irq_lock);
 #else
        ering->waiting = waitqueue_active(&ring->irq_queue);
 #endif