[src/trunk]: src/sys/external/bsd/drm2/dist/drm/i915 Lock irq_lock around i91...

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

details:   https://anonhg.NetBSD.org/src/rev/dcd51123f949
branches:  trunk
changeset: 331870:dcd51123f949
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Aug 27 23:30:26 2014 +0000

description:
Lock irq_lock around i915_error_wake_up in i915_error_work_func.

diffstat:

 sys/external/bsd/drm2/dist/drm/i915/i915_irq.c |  2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diffs (13 lines):

diff -r e863f7e5acb7 -r dcd51123f949 sys/external/bsd/drm2/dist/drm/i915/i915_irq.c
--- a/sys/external/bsd/drm2/dist/drm/i915/i915_irq.c    Wed Aug 27 19:02:17 2014 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/i915_irq.c    Wed Aug 27 23:30:26 2014 +0000
@@ -2249,7 +2249,9 @@
                 * Note: The wake_up also serves as a memory barrier so that
                 * waiters see the update value of the reset counter atomic_t.
                 */
+               spin_lock(&dev_priv->irq_lock);
                i915_error_wake_up(dev_priv, true);
+               spin_unlock(&dev_priv->irq_lock);
        }
 }