From 11ee0904a8da1e79c034b62365e4843b338475ef Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 7 Apr 2014 10:24:03 +0100 Subject: [PATCH] aide --- drivers/gpu/drm/i915/intel_ringbuffer.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 3316ec190d9c..1fefba56e073 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -477,6 +477,13 @@ static int init_ring_common(struct intel_ring_buffer *ring) gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL); + printk(KERN_ERR "Ring %s before initialisation: %08x %08x %08x %08x\n", + ring->name, + I915_READ_CTL(ring), + I915_READ_HEAD(ring), + I915_READ_TAIL(ring), + I915_READ_START(ring)); + if (!stop_ring(ring)) { /* G45 ring initialization often fails to reset head to zero */ DRM_DEBUG_KMS("%s head not reset to zero " @@ -540,6 +547,12 @@ static int init_ring_common(struct intel_ring_buffer *ring) memset(&ring->hangcheck, 0, sizeof(ring->hangcheck)); out: + printk(KERN_ERR "Ring %s after initialisation: %08x %08x %08x %08x\n", + ring->name, + I915_READ_CTL(ring), + I915_READ_HEAD(ring), + I915_READ_TAIL(ring), + I915_READ_START(ring)); gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL); return ret; -- 1.9.1