i915 gem: install and uninstall irq handler in entervt and leavevt ioctls.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index bb6e5a37efa2..5fe50343de11 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2443,6 +2443,9 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
         BUG_ON(!list_empty(&dev_priv->mm.request_list));
         dev_priv->mm.suspended = 0;
         mutex_unlock(&dev->struct_mutex);
+
+        drm_irq_install(dev);
+
         return 0;
 }
 
@@ -2458,6 +2461,8 @@ i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
                 i915_gem_cleanup_ringbuffer(dev);
         mutex_unlock(&dev->struct_mutex);
 
+        drm_irq_uninstall(dev);
+
         return 0;
 }