drm/i915/bxt: apply clock gating workaround to all revisions

No need to cater for old A revisions.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1487172099-24873-2-git-send-email-jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 3d311e10064306063eec10e60303f8cc4e9793ab..fe243c65de1ab1463a775702f967afa8693204a8 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -99,9 +99,8 @@ static void bxt_init_clock_gating(struct drm_i915_private *dev_priv)
         * Wa: Backlight PWM may stop in the asserted state, causing backlight
         * to stay fully on.
         */
-       if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER))
-               I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) |
-                          PWM1_GATING_DIS | PWM2_GATING_DIS);
+       I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) |
+                  PWM1_GATING_DIS | PWM2_GATING_DIS);
 }
 
 static void glk_init_clock_gating(struct drm_i915_private *dev_priv)