From 199c7d75b2676b64b0b3cda075450d59debe612b Mon Sep 17 00:00:00 2001 From: Imre Deak <imre.deak@intel.com> Date: Mon, 26 Feb 2024 20:52:45 +0200 Subject: [PATCH] drm/i915/dp: Sync instead of try-sync commits when getting active pipes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sync instead of only try-sync non-blocking commits when getting the active pipes through a given DP port. Atm intel_dp_get_active_pipes() will only try to sync a given pipe and if that would block ignore the pipe. This was supposed to avoid link retraining in case a pending modeset would do that anyway, however that could incorrectly ignore fastset pipes as well for instance (which don't retraing the link). The TC port reset path needs to handle all pipes, even if a waiting for a pending commit would block. To account for the above cases sync all the pipes unconditionally. This also prepares for a follow-up change enabling the DP tunnel BW allocation mode which needs to ensure that all active pipes are synced and returned from intel_dp_get_active_pipes(). v2: - Add a separate function to try-sync the pipes. (Ville) v3: - Just sync the pipes unconditionally in intel_dp_get_active_pipes(). (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> (v2) Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240226185246.1276018-3-imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_dp.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index d9e75922ff8f..8ae06aa42ddc 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5048,9 +5048,10 @@ int intel_dp_get_active_pipes(struct intel_dp *intel_dp, if (!crtc_state->hw.active) continue; - if (conn_state->commit && - !try_wait_for_completion(&conn_state->commit->hw_done)) - continue; + if (conn_state->commit) + drm_WARN_ON(&i915->drm, + !wait_for_completion_timeout(&conn_state->commit->hw_done, + msecs_to_jiffies(5000))); *pipe_mask |= BIT(crtc->pipe); } -- GitLab