[PATCH 0/2] GuC fixes

[Michal Wajdeczko]

New GuC firmware that uses CTB will not pass live_hangcheck selftest due to:

<3> [508.613024] [drm:intel_guc_send_mmio [i915]] *ERROR* MMIO: GuC action 0x4506 failed with error -110 0x4506
<3> [508.613142] [drm:guc_action_deregister_ct_buffer [i915]] *ERROR* CT: deregister SEND buffer failed; owner=0 err=-110
<3> [508.623521] [drm:intel_guc_send_mmio [i915]] *ERROR* MMIO: GuC action 0x4506 failed with error -110 0x4506
<3> [508.623573] [drm:guc_action_deregister_ct_buffer [i915]] *ERROR* CT: deregister RECV buffer failed; owner=0 err=-110

[1] https://patchwork.freedesktop.org/series/60276/
[2] https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_4257/fi-icl-u3/igt@i915_selftest@live_hangcheck.html

Michal Wajdeczko (2):
  drm/i915/uc: Explicitly sanitize GuC/HuC on failure and finish
  drm/i915/uc: Skip GuC HW unwinding if GuC is already dead

 drivers/gpu/drm/i915/intel_uc.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

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2.19.2