On Mon, 2015-06-01 at 15:41 +0300, Ander Conselvan de Oliveira wrote: > 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 <jbarnes@xxxxxxxxxxxxxxxx> > Date: Wed Nov 5 14:26:06 2014 -0800 > > drm/i915: factor out compute_config from __intel_set_mode v3 > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94431 > Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> > Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@xxxxxxxxx> > --- > > Hi, > > This patch applies on top of nightly, but it is only relevant without > Maarten's "drm/i915: Convert to atomic, part 2" series, because of the > changes to the hw state read out and force restore logic. > > The regression exists since 3.19. Same patch adapated for 4.1-rc6 here: https://bugzilla.kernel.org/attachment.cgi?id=178461 Ander > --- > 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 16e159d..24fb7ce 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 check); > static int intel_framebuffer_init(struct drm_device *dev, > struct intel_framebuffer *ifb, > struct drm_mode_fb_cmd2 *mode_cmd, > @@ -10282,7 +10283,7 @@ retry: > > 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); > @@ -10356,7 +10357,7 @@ 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; > > @@ -12832,20 +12833,22 @@ 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 check) > { > int ret; > > ret = __intel_set_mode(crtc, pipe_config); > > - if (ret == 0) > + if (ret == 0 && check) > 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 check) > { > struct intel_crtc_state *pipe_config; > int ret = 0; > @@ -12856,7 +12859,7 @@ 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, check); > if (ret) > goto out; > > @@ -12933,7 +12936,7 @@ 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); > } > @@ -13133,7 +13136,7 @@ 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 && --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
