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drm/i915/display: Check the old state to find port sync slave

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If the CRTC is going from enabled to disabled and it is a port sync
slave, it needs to check to the old state to be disabled before the
port sync master.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2019-12-02 14:25:11 -08:00
parent a3265d851e
commit e815aff59d
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_display.c
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@ -14497,8 +14497,8 @@ static void intel_commit_modeset_disables(struct intel_atomic_state *state)
* slave CRTCs are disabled first and then master CRTC since
* Slave vblanks are masked till Master Vblanks.
*/
if (is_trans_port_sync_mode(new_crtc_state)) {
if (is_trans_port_sync_master(new_crtc_state))
if (is_trans_port_sync_mode(old_crtc_state)) {
if (is_trans_port_sync_master(old_crtc_state))
intel_trans_port_sync_modeset_disables(state,
crtc,
old_crtc_state,