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drm/i915: Include a little more information about why ring init fails

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If we include the expected values for the failing ring register checks,
it makes it marginally easier to see which is the culprit.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2014-04-09 09:19:44 +01:00 committed by Daniel Vetter
parent 074c6adaf4
commit 48e48a0b8c
1 changed files with 5 additions and 6 deletions
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11
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -523,12 +523,11 @@ static int init_ring_common(struct intel_ring_buffer *ring)
I915_READ_START(ring) == i915_gem_obj_ggtt_offset(obj) &&
(I915_READ_HEAD(ring) & HEAD_ADDR) == 0, 50)) {
DRM_ERROR("%s initialization failed "
"ctl %08x head %08x tail %08x start %08x\n",
ring->name,
I915_READ_CTL(ring),
I915_READ_HEAD(ring),
I915_READ_TAIL(ring),
I915_READ_START(ring));
"ctl %08x (valid? %d) head %08x tail %08x start %08x [expected %08lx]\n",
ring->name,
I915_READ_CTL(ring), I915_READ_CTL(ring) & RING_VALID,
I915_READ_HEAD(ring), I915_READ_TAIL(ring),
I915_READ_START(ring), (unsigned long)i915_gem_obj_ggtt_offset(obj));
ret = -EIO;
goto out;
}