On Tue, Sep 25, 2018 at 07:54:22PM -0700, Dhinakaran Pandiyan wrote:
> A crtc modeset lock was added for link retraining but
> intel_dp_retrain_link() knows to take the necessary locks since
> commit c85d200e8321 ("drm/i915: Move SST DP link retraining into the
> ->post_hotplug() hook")
> v2: Drop AUX power domain reference in the early return path
>
> Fixes: c85d200e8321 ("drm/i915: Move SST DP link retraining into the
> ->post_hotplug() hook")
This patch failed on cherry-pick for drm-intel-fixes targeting 4.19.
If it still makes sense to have it there please provide a backported version
to drm-intel-fixes or let me know if it has dependency on other patches?
Thanks,
Rodrigo.
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 24 ++++++++++--------------
> 1 file changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 09229fc66dec..ef28cc0f122c 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -5079,8 +5079,15 @@ intel_dp_long_pulse(struct intel_connector *connector,
> * Some external monitors do not signal loss of link synchronization
> * with an IRQ_HPD, so force a link status check.
> */
> - if (!intel_dp_is_edp(intel_dp))
> - intel_dp_retrain_link(encoder, ctx);
> + if (!intel_dp_is_edp(intel_dp)) {
> + int ret;
> +
> + ret = intel_dp_retrain_link(encoder, ctx);
> + if (ret) {
> + intel_display_power_put(dev_priv,
> intel_dp->aux_power_domain);
> + return ret;
> + }
> + }
>
> /*
> * Clearing NACK and defer counts to get their exact values
> @@ -5130,19 +5137,8 @@ intel_dp_detect(struct drm_connector *connector,
> connector->base.id, connector->name);
>
> /* If full detect is not performed yet, do a full detect */
> - if (!intel_dp->detect_done) {
> - struct drm_crtc *crtc;
> - int ret;
> -
> - crtc = connector->state->crtc;
> - if (crtc) {
> - ret = drm_modeset_lock(&crtc->mutex, ctx);
> - if (ret)
> - return ret;
> - }
> -
> + if (!intel_dp->detect_done)
> status = intel_dp_long_pulse(intel_dp->attached_connector, ctx);
> - }
>
> intel_dp->detect_done = false;
>
> --
> 2.14.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
