[PATCH 3/3] drm/i915/dp: Don't WARN on failed link-retrain modeset

[Rodrigo Vivi]

On Fri, Jul 12, 2024 at 04:57:24PM +0300, Imre Deak wrote:
> After a bad link state is detected, the sink capabilities with which the
> link was originally trained could have changed: for instance another
> sink got connected or the retraining was forced after the rate/lane count
> got decreased (as a fallback). In these cases the retraining modeset
> fails as expected also printing a debug message, so don't WARN on it.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

> 
> Signed-off-by: Imre Deak <imre.deak at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 0365fb1e77eae..1e43e32e05199 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5282,14 +5282,11 @@ static int intel_dp_retrain_link(struct intel_encoder *encoder,
>  
>  void intel_dp_link_check(struct intel_encoder *encoder)
>  {
> -	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
>  	struct drm_modeset_acquire_ctx ctx;
>  	int ret;
>  
>  	intel_modeset_lock_ctx_retry(&ctx, NULL, 0, ret)
>  		ret = intel_dp_retrain_link(encoder, &ctx);
> -
> -	drm_WARN_ON(&i915->drm, ret);
>  }
>  
>  void intel_dp_check_link_state(struct intel_dp *intel_dp)
> -- 
> 2.44.2
>