1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 602bc80baabb..9689ca38b2b3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -288,7 +288,13 @@ typedef struct drm_i915_private {
         int relative_constants_mode;
 
         void __iomem *regs;
-        u32 gt_fifo_count;
+        /** gt_fifo_count and the subsequent register write are synchronized
+         * with dev->struct_mutex. */
+        unsigned gt_fifo_count;
+        /** forcewake_count is protected by gt_lock */
+        unsigned forcewake_count;
+        /** gt_lock is also taken in irq contexts. */
+        struct spinlock gt_lock;
 
         struct intel_gmbus {
                 struct i2c_adapter adapter;
@@ -741,8 +747,6 @@ typedef struct drm_i915_private {
 
         struct drm_property *broadcast_rgb_property;
         struct drm_property *force_audio_property;
-
-        atomic_t forcewake_count;
 } drm_i915_private_t;
 
 enum i915_cache_level {