From: Ville Syrjälä <ville.syrj...@linux.intel.com> We can't rely on connector->status in the detect() hook if the long hpd was already handled by the dig_port_work as that won't update connector->status. Thus we have to defer the long hpd handling entirely until the hotplug work runs to avoid the double long hpd handling the "detect_done" flag is trying to prevent.
Cc: Damien Cassou <dam...@cassou.me> Cc: freedesktop....@gp.mailgun.org Cc: Arno <blouin.a...@gmail.com> Cc: Shubhangi Shrivastava <shubhangi.shrivast...@intel.com> Cc: Sivakumar Thulasimani <sivakumar.thulasim...@intel.com> Cc: Ander Conselvan de Oliveira <conselv...@gmail.com> Cc: sta...@vger.kernel.org Tested-by: Arno <blouin.a...@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83348 Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com> --- drivers/gpu/drm/i915/intel_dp.c | 48 ++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 9448d898d80b..96caa469e3a8 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4827,36 +4827,34 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) port_name(intel_dig_port->port), long_hpd ? "long" : "short"); + if (long_hpd) { + intel_dp->detect_done = false; + return IRQ_NONE; + } + power_domain = intel_display_port_aux_power_domain(intel_encoder); intel_display_power_get(dev_priv, power_domain); - if (long_hpd) { - intel_dp_long_pulse(intel_dp->attached_connector); - if (intel_dp->is_mst) - ret = IRQ_HANDLED; - goto put_power; - - } else { - if (intel_dp->is_mst) { - if (intel_dp_check_mst_status(intel_dp) == -EINVAL) { - /* - * If we were in MST mode, and device is not - * there, get out of MST mode - */ - DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", - intel_dp->is_mst, intel_dp->mst_mgr.mst_state); - intel_dp->is_mst = false; - drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, - intel_dp->is_mst); - goto put_power; - } + if (intel_dp->is_mst) { + if (intel_dp_check_mst_status(intel_dp) == -EINVAL) { + /* + * If we were in MST mode, and device is not + * there, get out of MST mode + */ + DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", + intel_dp->is_mst, intel_dp->mst_mgr.mst_state); + intel_dp->is_mst = false; + drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, + intel_dp->is_mst); + intel_dp->detect_done = false; + goto put_power; } + } - if (!intel_dp->is_mst) { - if (!intel_dp_short_pulse(intel_dp)) { - intel_dp_long_pulse(intel_dp->attached_connector); - goto put_power; - } + if (!intel_dp->is_mst) { + if (!intel_dp_short_pulse(intel_dp)) { + intel_dp->detect_done = false; + goto put_power; } } -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
