[Intel-gfx] [PATCH v3] drm/i915: clear error registers after error capture

[Chris Wilson]

Quoting Lionel Landwerlin (2018-08-30 12:55:32)
> +       if (INTEL_GEN(dev_priv) >= 8) {
> +               struct intel_engine_cs *engine;
> +               enum intel_engine_id id;
> +
> +               for_each_engine(engine, dev_priv, id) {
> +                       I915_WRITE(RING_FAULT_REG(engine),
> +                                  I915_READ(RING_FAULT_REG(engine)) &
> +                                  ~RING_FAULT_VALID);
> +               }
> +               POSTING_READ(RING_FAULT_REG(dev_priv->engine[RCS]));
> +       } else if (INTEL_GEN(dev_priv) >= 6) {
> +               I915_WRITE(GEN8_RING_FAULT_REG,
> +                          I915_READ(GEN8_RING_FAULT_REG) & ~RING_FAULT_VALID);
> +               POSTING_READ(GEN8_RING_FAULT_REG);
> +       }

Reversed! gen8 has the single reg, gen6 has one per engine.
-Chris