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

[Chris Wilson]

Quoting Lionel Landwerlin (2018-08-30 11:52:28)
> We need to clear the register in order to get correct value after the
> next potential hang.
> 
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_gpu_error.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
> index afd70deae7ef..1cc9cde41328 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -1768,6 +1768,8 @@ static int capture(void *data)
>  
>         error->epoch = capture_find_epoch(error);
>  
> +       i915_check_and_clear_faults(error->i915);

We already have i915_clear_error_registers() high up in the caller. I'd
like to pull i915_check_and_clear_faults() into
i915_clear_error_registers, and so also clear the error regs on take
over like we do for faults.
-Chris