[PATCH 4/5] drm/i915: Remove unused head member in request struct

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From: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>

commit 939fd762083f988be271da8c96398178daf9baf0
Author: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Date:   Thu Jan 30 19:04:44 2014 +0200

    drm/i915: Get rid of acthd based guilty batch search

Failed to cleanup properly as it made the head obsolete.

Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.h | 3 ---
 drivers/gpu/drm/i915/i915_gem.c | 3 ---
 2 files changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a76c6ee..ed6585e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2049,9 +2049,6 @@ struct drm_i915_gem_request {
 	/** GEM sequence number associated with this request. */
 	uint32_t seqno;
 
-	/** Position in the ringbuffer of the start of the request */
-	u32 head;
-
 	/**
 	 * Position in the ringbuffer of the start of the postfix.
 	 * This is required to calculate the maximum available ringbuffer
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b0e4a33..2986890 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2427,7 +2427,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
 	struct drm_i915_private *dev_priv = ring->dev->dev_private;
 	struct drm_i915_gem_request *request;
 	struct intel_ringbuffer *ringbuf;
-	u32 request_start;
 	int ret;
 
 	request = ring->outstanding_lazy_request;
@@ -2439,7 +2438,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
 	} else
 		ringbuf = ring->buffer;
 
-	request_start = intel_ring_get_tail(ringbuf);
 	/*
 	 * Emit any outstanding flushes - execbuf can fail to emit the flush
 	 * after having emitted the batchbuffer command. Hence we need to fix
@@ -2474,7 +2472,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
 			return ret;
 	}
 
-	request->head = request_start;
 	request->tail = intel_ring_get_tail(ringbuf);
 
 	/* Whilst this request exists, batch_obj will be on the
-- 
2.1.0

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