From: Ville Syrjälä Date: Mon, 18 Feb 2013 17:08:48 +0000 (+0200) Subject: drm/i915: Really wait for pending flips when panning X-Git-Tag: v3.10-rc1~110^2~60^2~76 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=4878cae22a2405b6d33318e2dc99a9c1367fee44;p=~emulex%2Finfiniband.git drm/i915: Really wait for pending flips when panning Since obj->pending_flips was never set, intel_pipe_set_base() never actually waited for pending page flips to complete. We really do want to wait for the pending flips, because otherwise the mmio surface base address update could overtake the flip, and you could end up with an old frame on the screen once the flip really completes. Just call intel_crtc_wait_pending_flips() prior to calling intel_pipe_set_base() instead of calling just intel_finish_fb() from intel_pipe_set_base(). Moving the call outside of intel_pipe_set_base() avoids calling it twice from the full modeset path. v2: Wait for pending flips w/o holding struct_mutex Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6eb3882ba9b..85bf178bac7 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2301,9 +2301,6 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, return ret; } - if (crtc->fb) - intel_finish_fb(crtc->fb); - ret = dev_priv->display.update_plane(crtc, fb, x, y); if (ret) { intel_unpin_fb_obj(to_intel_framebuffer(fb)->obj); @@ -8125,6 +8122,8 @@ static int intel_crtc_set_config(struct drm_mode_set *set) goto fail; } } else if (config->fb_changed) { + intel_crtc_wait_for_pending_flips(set->crtc); + ret = intel_pipe_set_base(set->crtc, set->x, set->y, set->fb); }