drm/i915: Check for FIFO underruns at the end of modeset on gmch
FIFO underruns don't generate interrupts on gmch platforms, so
if we want to know whether a modeset triggered FIFO underruns we
need to explicitly check for them.
As a modeset on one pipe could cause underruns on other pipes,
check for underruns on all pipes.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Thomas Wood <thomas.wood@intel.com>
[danvet: Fix up merge error, kudos to Ville for noticing it.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6c5db7c..8d960d2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4625,6 +4625,9 @@
intel_crtc_enable_planes(crtc);
drm_crtc_vblank_on(crtc);
+
+ /* Underruns don't raise interrupts, so check manually. */
+ i9xx_check_fifo_underruns(dev);
}
static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
@@ -4704,6 +4707,9 @@
intel_crtc_enable_planes(crtc);
drm_crtc_vblank_on(crtc);
+
+ /* Underruns don't raise interrupts, so check manually. */
+ i9xx_check_fifo_underruns(dev);
}
static void i9xx_pfit_disable(struct intel_crtc *crtc)
