From 7bff9779d76917adfa7c67712aa6ae3b7e5098ba Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Fri, 30 Aug 2019 12:16:44 +0200 Subject: [PATCH] drm/i915: Fix regression with crtc disable ordering MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When we moved the code to disable crtc's to a separate patch, we forgot to ensure that for_each_oldnew_intel_crtc_in_state_reverse() was moved as well. Signed-off-by: Maarten Lankhorst Fixes: 66d9cec8a6c9 ("drm/i915/display: Move the commit_tail() disable sequence to separate function") Cc: Ville Syrjälä Cc: Manasi Navare Cc: José Roberto de Souza Reviewed-by: Manasi Navare Reviewed-by: José Roberto de Souza Signed-off-by: Manasi Navare Link: https://patchwork.freedesktop.org/patch/msgid/20190830101644.8740-1-maarten.lankhorst@linux.intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 21 ++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index b38d842ff6ec..e661e2099118 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -13784,7 +13784,15 @@ static void intel_commit_modeset_disables(struct intel_atomic_state *state) struct intel_crtc *crtc; int i; - for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + /* + * Disable CRTC/pipes in reverse order because some features(MST in + * TGL+) requires master and slave relationship between pipes, so it + * should always pick the lowest pipe as master as it will be enabled + * first and disable in the reverse order so the master will be the + * last one to be disabled. + */ + for_each_oldnew_intel_crtc_in_state_reverse(state, crtc, old_crtc_state, + new_crtc_state, i) { if (!needs_modeset(new_crtc_state)) continue; @@ -13963,15 +13971,8 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state) if (state->modeset) wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET); - /* - * Disable CRTC/pipes in reverse order because some features(MST in - * TGL+) requires master and slave relationship between pipes, so it - * should always pick the lowest pipe as master as it will be enabled - * first and disable in the reverse order so the master will be the - * last one to be disabled. - */ - for_each_oldnew_intel_crtc_in_state_reverse(state, crtc, old_crtc_state, - new_crtc_state, i) { + for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, + new_crtc_state, i) { if (needs_modeset(new_crtc_state) || new_crtc_state->update_pipe) { -- 2.20.1