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>

2 files changed, 6 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;
 }
 
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 1469a1bd8821..51ee72c962b1 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1134,6 +1134,7 @@ extern void drm_core_reclaim_buffers(struct drm_device *dev,
 extern int drm_control(struct drm_device *dev, void *data,
                        struct drm_file *file_priv);
 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
+extern int drm_irq_install(struct drm_device *dev);
 extern int drm_irq_uninstall(struct drm_device *dev);
 extern void drm_driver_irq_preinstall(struct drm_device *dev);
 extern void drm_driver_irq_postinstall(struct drm_device *dev);