drm/i915: Remove unecessary dma_fence_ops

dma_fence_default_wait is the default now, same for the trivial
enable_signaling implementation.

v2: Also remove the relase hook, dma_fence_free is the default.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180704092909.6599-2-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/i915_gem_clflush.c

@@ -45,11 +45,6 @@ static const char *i915_clflush_get_timeline_name(struct dma_fence *fence)
 	return "clflush";
 }
 
-static bool i915_clflush_enable_signaling(struct dma_fence *fence)
-{
-	return true;
-}
-
 static void i915_clflush_release(struct dma_fence *fence)
 {
 	struct clflush *clflush = container_of(fence, typeof(*clflush), dma);
@@ -63,8 +58,6 @@ static void i915_clflush_release(struct dma_fence *fence)
 static const struct dma_fence_ops i915_clflush_ops = {
 	.get_driver_name = i915_clflush_get_driver_name,
 	.get_timeline_name = i915_clflush_get_timeline_name,
-	.enable_signaling = i915_clflush_enable_signaling,
-	.wait = dma_fence_default_wait,
 	.release = i915_clflush_release,
 };
 

drivers/gpu/drm/i915/selftests/i915_sw_fence.c

@@ -611,17 +611,9 @@ static const char *mock_name(struct dma_fence *fence)
 	return "mock";
 }
 
-static bool mock_enable_signaling(struct dma_fence *fence)
-{
-	return true;
-}
-
 static const struct dma_fence_ops mock_fence_ops = {
 	.get_driver_name = mock_name,
 	.get_timeline_name = mock_name,
-	.enable_signaling = mock_enable_signaling,
-	.wait = dma_fence_default_wait,
-	.release = dma_fence_free,
 };
 
 static DEFINE_SPINLOCK(mock_fence_lock);