drm/i915: vlv: increase timeout when setting idle GPU freq

I saw punit timeouts in vlv_set_rps_idle() while running various
subtests of pm_rpm. Increasing the timeout to 100ms got rid of the
issue.

Testcase: igt/pm_rpm
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Signed-off-by: Imre Deak <imre.deak@intel.com>
Tested-by: Guo Jinxian <jinxianx.guo@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f103fff..14f34f0 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4451,7 +4451,7 @@ static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
                                        dev_priv->rps.min_freq_softlimit);
 
        if (wait_for(((vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS))
-                               & GENFREQSTATUS) == 0, 5))
+                               & GENFREQSTATUS) == 0, 100))
                DRM_ERROR("timed out waiting for Punit\n");
 
        vlv_force_gfx_clock(dev_priv, false);