[PATCH 12/28] drm/i915: Remove redundant WARN_ON from __i915_add_request()

[Chris Wilson]

It's an outright programming error, so explode if it is ever hit.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem_request.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index b764c1d440c8..30c7280bc64b 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -463,18 +463,12 @@ static void i915_gem_mark_busy(const struct intel_engine_cs *engine)
  */
 void __i915_add_request(struct drm_i915_gem_request *request, bool flush_caches)
 {
-	struct intel_engine_cs *engine;
-	struct intel_ring *ring;
+	struct intel_engine_cs *engine = request->engine;
+	struct intel_ring *ring = request->ring;
 	u32 request_start;
 	u32 reserved_tail;
 	int ret;
 
-	if (WARN_ON(!request))
-		return;
-
-	engine = request->engine;
-	ring = request->ring;
-
 	/*
 	 * To ensure that this call will not fail, space for its emissions
 	 * should already have been reserved in the ring buffer. Let the ring
-- 
2.8.1