From e62d8dc0aa9f7493bcee3cbc4bf666a23a2d2f17 Mon Sep 17 00:00:00 2001 From: Ander Conselvan de Oliveira Date: Tue, 16 Jun 2015 11:49:43 +0300 Subject: [PATCH] drm/i915: Don't check modeset state in the hw state force restore path Since the force restore logic will restore the CRTCs state one at a time, it is possible that the state will be inconsistent until the whole operation finishes. A call to intel_modeset_check_state() is done once it's over, so don't check the state multiple times in between. This regression was introduced in: commit 7f27126ea3db6ade886f18fd39caf0ff0cd1d37f Author: Jesse Barnes Date: Wed Nov 5 14:26:06 2014 -0800 drm/i915: factor out compute_config from __intel_set_mode v3 v2: Rename check parameter to force_restore. (Matt) Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94431 Cc: Jesse Barnes Signed-off-by: Ander Conselvan de Oliveira Reviewed-by: Matt Roper Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4e3f302d86f7..bcf1041b5a1a 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -87,7 +87,8 @@ static void ironlake_pch_clock_get(struct intel_crtc *crtc, struct intel_crtc_state *pipe_config); static int intel_set_mode(struct drm_crtc *crtc, - struct drm_atomic_state *state); + struct drm_atomic_state *state, + bool force_restore); static int intel_framebuffer_init(struct drm_device *dev, struct intel_framebuffer *ifb, struct drm_mode_fb_cmd2 *mode_cmd, @@ -10096,7 +10097,7 @@ bool intel_get_load_detect_pipe(struct drm_connector *connector, drm_mode_copy(&crtc_state->base.mode, mode); - if (intel_set_mode(crtc, state)) { + if (intel_set_mode(crtc, state, true)) { DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n"); if (old->release_fb) old->release_fb->funcs->destroy(old->release_fb); @@ -10170,7 +10171,7 @@ void intel_release_load_detect_pipe(struct drm_connector *connector, if (ret) goto fail; - ret = intel_set_mode(crtc, state); + ret = intel_set_mode(crtc, state, true); if (ret) goto fail; @@ -12646,20 +12647,22 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc, } static int intel_set_mode_with_config(struct drm_crtc *crtc, - struct intel_crtc_state *pipe_config) + struct intel_crtc_state *pipe_config, + bool force_restore) { int ret; ret = __intel_set_mode(crtc, pipe_config); - if (ret == 0) + if (ret == 0 && force_restore) intel_modeset_check_state(crtc->dev); return ret; } static int intel_set_mode(struct drm_crtc *crtc, - struct drm_atomic_state *state) + struct drm_atomic_state *state, + bool force_restore) { struct intel_crtc_state *pipe_config; int ret = 0; @@ -12670,7 +12673,7 @@ static int intel_set_mode(struct drm_crtc *crtc, goto out; } - ret = intel_set_mode_with_config(crtc, pipe_config); + ret = intel_set_mode_with_config(crtc, pipe_config, force_restore); if (ret) goto out; @@ -12747,7 +12750,7 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc) intel_modeset_setup_plane_state(state, crtc, &crtc->mode, crtc->primary->fb, crtc->x, crtc->y); - ret = intel_set_mode(crtc, state); + ret = intel_set_mode(crtc, state, false); if (ret) drm_atomic_state_free(state); } @@ -12947,7 +12950,7 @@ static int intel_crtc_set_config(struct drm_mode_set *set) primary_plane_was_visible = primary_plane_visible(set->crtc); - ret = intel_set_mode_with_config(set->crtc, pipe_config); + ret = intel_set_mode_with_config(set->crtc, pipe_config, true); if (ret == 0 && pipe_config->base.enable &&