From: Chris Wilson Date: Fri, 21 Oct 2016 20:55:31 +0000 (+0100) Subject: drm/i915: Stop setting SNB min-freq-table 0 on powersave setup X-Git-Tag: v4.10-rc1~154^2~44^2~1 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=fbf0296c25ce3ae0816d2f72aaef70e7da9e3a7a;p=linux.git drm/i915: Stop setting SNB min-freq-table 0 on powersave setup The min-freq-table is an array of values that match each CPU frequency to an equivalent GPU frequency. Setting a single value of 0 on init is both illegal (generates an error from the PCU) and nonsensical. Let's see if we survive without that error. Signed-off-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/20161021205531.8651-1-chris@chris-wilson.co.uk Reviewed-by: Ville Syrjälä --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0a9e7f2045d4..ea01b406d776 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5589,10 +5589,6 @@ static void gen6_enable_rps(struct drm_i915_private *dev_priv) I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); - ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); - if (ret) - DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); - reset_rps(dev_priv, gen6_set_rps); rc6vids = 0;