drm/i915: Pass dev_priv to ilk_disable_lp_wm()

Get rid of another 'dev' usage by passing dev_priv instead.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-3-ville.syrjala@linux.intel.comReviewed-by: José Roberto de Souza <jose.souza@intel.com>

drivers/gpu/drm/i915/display/intel_display.c

@@ -6166,7 +6166,7 @@ static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state,
 	 *
 	 * WaCxSRDisabledForSpriteScaling:ivb
 	 */
-	if (pipe_config->disable_lp_wm && ilk_disable_lp_wm(dev) &&
+	if (pipe_config->disable_lp_wm && ilk_disable_lp_wm(dev_priv) &&
 	    old_crtc_state->hw.active)
 		intel_wait_for_vblank(dev_priv, crtc->pipe);
 

drivers/gpu/drm/i915/intel_pm.c

@@ -3592,10 +3592,8 @@ static void ilk_write_wm_values(struct drm_i915_private *dev_priv,
 	dev_priv->wm.hw = *results;
 }
 
-bool ilk_disable_lp_wm(struct drm_device *dev)
+bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv)
 {
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
 	return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
 }
 

drivers/gpu/drm/i915/intel_pm.h

@@ -54,7 +54,7 @@ void skl_write_plane_wm(struct intel_plane *plane,
 			const struct intel_crtc_state *crtc_state);
 void skl_write_cursor_wm(struct intel_plane *plane,
 			 const struct intel_crtc_state *crtc_state);
-bool ilk_disable_lp_wm(struct drm_device *dev);
+bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv);
 void intel_init_ipc(struct drm_i915_private *dev_priv);
 void intel_enable_ipc(struct drm_i915_private *dev_priv);