[Intel-gfx] [PATCH] drm/i915/gt: Exercise lrc_wa_ctx initialisation failure

[Matt Roper]

On Fri, Jan 08, 2021 at 08:51:14PM +0000, Chris Wilson wrote:
> Inject a fault into lrc_init_wa_ctx() to ensure that we can tolerate a
> failure to construct the workarounds.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Matt Roper <matthew.d.roper at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/i915/gt/intel_lrc.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
> index 703d9ecc3f7e..f0de3f661042 100644
> --- a/drivers/gpu/drm/i915/gt/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
> @@ -1525,6 +1525,9 @@ int lrc_init_wa_ctx(struct intel_engine_cs *engine)
>  
>  	__i915_gem_object_flush_map(wa_ctx->vma->obj, 0, batch_ptr - batch);
>  	__i915_gem_object_release_map(wa_ctx->vma->obj);
> +
> +	if (i915_inject_probe_error(engine->i915, -ENODEV))
> +		ret = -ENODEV;
>  	if (ret)
>  		lrc_fini_wa_ctx(engine);
>  
> -- 
> 2.20.1
> 

-- 
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795