[Intel-gfx] [PATCH 1/2] drm/i915: Early return for no-op i915_vma_pin_fence()

[Chris Wilson]

If we have no fence and desire no fence on the vma, return before we try
and take the vm->mutex.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem_fence_reg.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.c b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
index 71efccfde122..d9c34a23cd67 100644
--- a/drivers/gpu/drm/i915/i915_gem_fence_reg.c
+++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
@@ -412,6 +412,9 @@ int i915_vma_pin_fence(struct i915_vma *vma)
 {
 	int err;
 
+	if (!vma->fence && !i915_gem_object_is_tiled(vma->obj))
+		return 0;
+
 	/*
 	 * Note that we revoke fences on runtime suspend. Therefore the user
 	 * must keep the device awake whilst using the fence.
-- 
2.25.0.rc1