Commit 4f3308b9 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter

drm/i915: there's no PIPESTAT on HAS_PCH_SPLIT platforms

So don't read it when capturing the error state. This solves
"unclaimed register" messages on Haswell when we have a GPU hang.

V2: Check for HAS_PCH_SPLIT instead of Gen5+ because VLV still has
this register.
Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 80ca378b
......@@ -1387,6 +1387,7 @@ static void i915_capture_error_state(struct drm_device *dev)
else if (INTEL_INFO(dev)->gen == 6)
error->forcewake = I915_READ(FORCEWAKE);
if (!HAS_PCH_SPLIT(dev))
for_each_pipe(pipe)
error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
......
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