Where we have a request we can use req->i915 directly instead
of going through the engine and device. Coccinelle script:
@@
function f;
identifier r;
@@
f(..., struct drm_i915_gem_request *r, ...)
{
...
- engine->dev->dev_private
+ r->i915
...
}
@@
struct drm_i915_gem_request *req;
@@
(
  req->
- engine->dev->dev_private
+ i915
)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1458219850-21007-1-git-send-email-tvrtko.ursulin@linux.intel.com
                return;
 
        engine = request->engine;
-       dev_priv = engine->dev->dev_private;
+       dev_priv = request->i915;
        ringbuf = request->ringbuf;
 
        /*
 
 {
        struct intel_context *to = req->ctx;
        struct intel_engine_cs *engine = req->engine;
-       struct drm_i915_private *dev_priv = engine->dev->dev_private;
+       struct drm_i915_private *dev_priv = req->i915;
        struct intel_context *from = engine->last_context;
        u32 hw_flags = 0;
        bool uninitialized = false;
 int i915_switch_context(struct drm_i915_gem_request *req)
 {
        struct intel_engine_cs *engine = req->engine;
-       struct drm_i915_private *dev_priv = engine->dev->dev_private;
+       struct drm_i915_private *dev_priv = req->i915;
 
        WARN_ON(i915.enable_execlists);
        WARN_ON(!mutex_is_locked(&dev_priv->dev->struct_mutex));
 
 
 int i915_ppgtt_init_ring(struct drm_i915_gem_request *req)
 {
-       struct drm_i915_private *dev_priv = req->engine->dev->dev_private;
+       struct drm_i915_private *dev_priv = req->i915;
        struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
 
        if (i915.enable_execlists)
 
        int ret;
 
        WARN_ON(req == NULL);
-       dev_priv = req->engine->dev->dev_private;
+       dev_priv = req->i915;
 
        ret = i915_gem_check_wedge(&dev_priv->gpu_error,
                                   dev_priv->mm.interruptible);
 
 
        WARN_ON(req == NULL);
        engine = req->engine;
-       dev_priv = engine->dev->dev_private;
+       dev_priv = req->i915;
 
        ret = i915_gem_check_wedge(&dev_priv->gpu_error,
                                   dev_priv->mm.interruptible);