On Thu, Aug 17, 2017 at 08:03:04PM -0700, Manasi Navare wrote:
> In the channel EQ retry loop, we break from the loop in case
> of failure to get link status or failure in clock recovery or
> failure to update link training. In these cases channel_eq_status
> is still false even though the retry loop has not reached max retries.
> So we need to consider this as a failure condition.
>
Reviewed-by: Jim Bride <jim.bride@xxxxxxxxxxxxxxx>
> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Cc: Jim Bride <jim.bride@xxxxxxxxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dp_link_training.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c
> index 05907fa..3fef219 100644
> --- a/drivers/gpu/drm/i915/intel_dp_link_training.c
> +++ b/drivers/gpu/drm/i915/intel_dp_link_training.c
> @@ -294,9 +294,9 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp)
> }
>
> /* Try 5 times, else fail and try at lower BW */
> - if (tries == 5) {
> + if (tries == 5 || !intel_dp->channel_eq_status) {
> intel_dp_dump_link_status(link_status);
> - DRM_DEBUG_KMS("Channel equalization failed 5 times\n");
> + DRM_DEBUG_KMS("Channel equalization failed\n");
> }
>
> intel_dp_set_idle_link_train(intel_dp);
> --
> 2.1.4
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