diff --git a/drivers/gpu/drm/i915/dvo_ns2501.c b/drivers/gpu/drm/i915/dvo_ns2501.c
index 1a0bad9a5fab..6bd383dfbb09 100644
--- a/drivers/gpu/drm/i915/dvo_ns2501.c
+++ b/drivers/gpu/drm/i915/dvo_ns2501.c
@@ -74,11 +74,6 @@ struct ns2501_priv {
 
 #define NSPTR(d) ((NS2501Ptr)(d->DriverPrivate.ptr))
 
-/*
- * Include the PLL launcher prototype
- */
-extern void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
-
 /*
  * For reasons unclear to me, the ns2501 at least on the Fujitsu/Siemens
  * laptops does not react on the i2c bus unless
@@ -113,8 +108,6 @@ static void enable_dvo(struct intel_dvo_device *dvo)
 	I915_WRITE(DVOC_SRCDIM, 0x400300);	// 1024x768
 	I915_WRITE(FW_BLC, 0x1080304);
 
-	intel_enable_pll(dev_priv, 0);
-
 	I915_WRITE(DVOC, 0x90004084);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dd760f43f577..a55f6642be20 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1432,7 +1432,7 @@ static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
  *
  * Unfortunately needed by dvo_ns2501 since the dvo depends on it running.
  */
-void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
 {
 	int reg;
 	u32 val;