Chris Wilson <[email protected]> writes:

> As we ordinarily use a spinning batch to trigger a hang, we cannot do so
> without execbuf. On the other hand, if we do a manual reset of the
> wedged driver, we expect it to remain wedged and for the reset to fail;

by 'manual' you are referring to '-1' on i915_wedged debugfs entry?
-Mika

> failing the test. Even if we remove the igt_assert(!wedged), the test is
> suspect as we don't know if the reset took place and so do not know if
> the conditions the test is trying to setup apply.
>
> Signed-off-by: Chris Wilson <[email protected]>
> ---
>  lib/igt_gt.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/lib/igt_gt.c b/lib/igt_gt.c
> index 4569fd36b..89b318ae6 100644
> --- a/lib/igt_gt.c
> +++ b/lib/igt_gt.c
> @@ -162,6 +162,13 @@ igt_hang_t igt_allow_hang(int fd, unsigned ctx, unsigned 
> flags)
>       };
>       unsigned ban;
>  
> +     /*
> +      * If the driver is already wedged, we don't expect it to be able
> +      * to recover from reset and for it to remain wedged. It's hard to
> +      * say even if we do hang/reset making the test suspect.
> +      */
> +     igt_require_gem(fd);
> +
>       igt_assert(igt_sysfs_set_parameter
>                  (fd, "reset", "%d", INT_MAX /* any reset method */));
>  
> -- 
> 2.18.0
>
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