From: Ville Syrjälä Date: Fri, 20 Nov 2015 20:09:20 +0000 (+0200) Subject: drm/i915: Check for underruns after crtc disable X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9bbc8258ae5914af1986561767d971417cee7a28;p=linux-beck.git drm/i915: Check for underruns after crtc disable To get a better idea if underruns occurred during crtc disabling, let's check for them explicitly. This helps in cases where the error interrupt isn't active, or there is no underrun interrupt support at all. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1448050160-14124-3-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9c8718366cc2..3df22f0c84df 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13402,6 +13402,13 @@ static int intel_atomic_commit(struct drm_device *dev, dev_priv->display.crtc_disable(crtc); intel_crtc->active = false; intel_disable_shared_dpll(intel_crtc); + + /* + * Underruns don't always raise + * interrupts, so check manually. + */ + intel_check_cpu_fifo_underruns(dev_priv); + intel_check_pch_fifo_underruns(dev_priv); } }