Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux

[cascardo/linux.git] / drivers / gpu / drm / i915 / i915_guc_submission.c

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 43358e1..3106dcc 100644 (file)
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -451,6 +451,18 @@ int i915_guc_wq_reserve(struct drm_i915_gem_request *request)
        return ret;
 }
 
+void i915_guc_wq_unreserve(struct drm_i915_gem_request *request)
+{
+       const size_t wqi_size = sizeof(struct guc_wq_item);
+       struct i915_guc_client *gc = request->i915->guc.execbuf_client;
+
+       GEM_BUG_ON(READ_ONCE(gc->wq_rsvd) < wqi_size);
+
+       spin_lock(&gc->wq_lock);
+       gc->wq_rsvd -= wqi_size;
+       spin_unlock(&gc->wq_lock);
+}
+
 /* Construct a Work Item and append it to the GuC's Work Queue */
 static void guc_wq_item_append(struct i915_guc_client *gc,
                               struct drm_i915_gem_request *rq)