drm/i915: Make some RPS functions static

They are not used anywhere else. Also, fix a small typo in a comment.

No functional changes.

Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: NOscar Mateo <oscar.mateo@intel.com>
Reviewed-by: NSagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: NOscar Mateo <oscar.mateo@intel.com>
Signed-off-by: NRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1503532705-3692-1-git-send-email-oscar.mateo@intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/1503532705-3692-1-git-send-email-oscar.mateo@intel.com

drivers/gpu/drm/i915/i915_irq.c

@@ -336,7 +336,7 @@ void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask)
 	__gen6_mask_pm_irq(dev_priv, mask);
 }
 
-void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
+static void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
 {
 	i915_reg_t reg = gen6_pm_iir(dev_priv);
 
@@ -347,7 +347,7 @@ void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
 	POSTING_READ(reg);
 }
 
-void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
+static void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
@@ -357,7 +357,7 @@ void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
 	/* unmask_pm_irq provides an implicit barrier (POSTING_READ) */
 }
 
-void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask)
+static void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
@@ -405,7 +405,7 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
 	synchronize_irq(dev_priv->drm.irq);
 
 	/* Now that we will not be generating any more work, flush any
-	 * outsanding tasks. As we are called on the RPS idle path,
+	 * outstanding tasks. As we are called on the RPS idle path,
 	 * we will reset the GPU to minimum frequencies, so the current
 	 * state of the worker can be discarded.
 	 */

drivers/gpu/drm/i915/intel_drv.h

@@ -1206,11 +1206,8 @@ void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
 /* i915_irq.c */
 void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
 void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
-void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 mask);
 void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
 void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
-void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
-void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
 void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
 void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
 void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);