From 90d469067d0808ddbd9be2c97a4a8e14037b5e46 Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Thu, 7 May 2015 14:31:28 -0700 Subject: [PATCH] drm/i915: Set crtc_state->active to false when CRTC is disabled (v2) With the recent modeset internal rework, we wind up setting crtc_state->enable to false, but leave crtc_state->active as true, which is incorrect. This mismatch gets caught by drm_atomic_crtc_check() and causes subsequent atomic operations (such as plane updates while the CRTC is disabled) to fail. Bisect points to commit dad9a7d6d96630182fb52aae7c3856e9e7285e13 Author: Ander Conselvan de Oliveira Date: Tue Apr 21 17:13:19 2015 +0300 drm/i915: Use atomic helpers for computing changed flags as the commit that actually triggers the regression. v2: Update to alter in-flight state rather than already-committed state (first version was accidentally based on a midpoint of Ander's modeset rework series, before his final patches that add proper state swapping to the legacy modeset path). Cc: Ander Conselvan de Oliveira Cc: Maarten Lankhorst Testcase: igt/kms_universal_plane Signed-off-by: Matt Roper Reviewed-by: Ander Conselvan de Oliveira Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index b5806400d40e..fd228a27a7d0 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12340,6 +12340,7 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc, continue; if (!crtc_state->enable) { + crtc_state->active = false; intel_crtc_disable(crtc); } else if (crtc->state->enable) { intel_crtc_disable_planes(crtc); -- 2.11.0