Quoting Lionel Landwerlin (2018-08-30 14:24:24)
> We need to clear the register in order to get correct value after the
> next potential hang.
>
> v2: Centralize error register clearing in i915_irq.c (Chris)
>
> v3: Don't read gen8 register on < gen6 (Chris)
>
> v4: Don't swap gen8+ & gen6+ code... (Chris)
>
> Signed-off-by: Lionel Landwerlin <[email protected]>
> Reviewed-by: Chris Wilson <[email protected]>
Lgtm,
-Chris
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