diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index f5b4c98..21ee647 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -461,8 +461,7 @@
 static u32 intel_panel_compute_brightness(struct intel_connector *connector,
 					  u32 val)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 
 	WARN_ON(panel->backlight.max == 0);
@@ -480,45 +479,40 @@
 
 static u32 lpt_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 
 	return I915_READ(BLC_PWM_PCH_CTL2) & BACKLIGHT_DUTY_CYCLE_MASK;
 }
 
 static u32 pch_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 
 	return I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
 }
 
 static u32 i9xx_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 val;
 
 	val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
-	if (INTEL_INFO(dev)->gen < 4)
+	if (INTEL_INFO(dev_priv)->gen < 4)
 		val >>= 1;
 
 	if (panel->backlight.combination_mode) {
 		u8 lbpc;
 
-		pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
+		pci_read_config_byte(dev_priv->dev->pdev, PCI_LBPC, &lbpc);
 		val *= lbpc;
 	}
 
 	return val;
 }
 
-static u32 _vlv_get_backlight(struct drm_device *dev, enum pipe pipe)
+static u32 _vlv_get_backlight(struct drm_i915_private *dev_priv, enum pipe pipe)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
 	if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B))
 		return 0;
 
@@ -527,17 +521,16 @@
 
 static u32 vlv_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 
-	return _vlv_get_backlight(dev, pipe);
+	return _vlv_get_backlight(dev_priv, pipe);
 }
 
 static u32 bxt_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
-	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	return I915_READ(BXT_BLC_PWM_DUTY(panel->backlight.controller));
 }
@@ -553,8 +546,7 @@
 
 static u32 intel_panel_get_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 val = 0;
 
@@ -573,16 +565,14 @@
 
 static void lpt_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 val = I915_READ(BLC_PWM_PCH_CTL2) & ~BACKLIGHT_DUTY_CYCLE_MASK;
 	I915_WRITE(BLC_PWM_PCH_CTL2, val | level);
 }
 
 static void pch_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 tmp;
 
 	tmp = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
@@ -591,8 +581,7 @@
 
 static void i9xx_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 tmp, mask;
 
@@ -603,10 +592,10 @@
 
 		lbpc = level * 0xfe / panel->backlight.max + 1;
 		level /= lbpc;
-		pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc);
+		pci_write_config_byte(dev_priv->dev->pdev, PCI_LBPC, lbpc);
 	}
 
-	if (IS_GEN4(dev)) {
+	if (IS_GEN4(dev_priv)) {
 		mask = BACKLIGHT_DUTY_CYCLE_MASK;
 	} else {
 		level <<= 1;
@@ -619,8 +608,7 @@
 
 static void vlv_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 tmp;
 
@@ -633,8 +621,7 @@
 
 static void bxt_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 
 	I915_WRITE(BXT_BLC_PWM_DUTY(panel->backlight.controller), level);
@@ -663,8 +650,7 @@
 static void intel_panel_set_backlight(struct intel_connector *connector,
 				      u32 user_level, u32 user_max)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 hw_level;
 
@@ -690,8 +676,7 @@
 void intel_panel_set_backlight_acpi(struct intel_connector *connector,
 				    u32 user_level, u32 user_max)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 hw_level;
@@ -726,8 +711,7 @@
 
 static void lpt_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 tmp;
 
 	intel_panel_actually_set_backlight(connector, 0);
@@ -752,8 +736,7 @@
 
 static void pch_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 tmp;
 
 	intel_panel_actually_set_backlight(connector, 0);
@@ -772,8 +755,7 @@
 
 static void i965_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 tmp;
 
 	intel_panel_actually_set_backlight(connector, 0);
@@ -784,8 +766,7 @@
 
 static void vlv_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 tmp;
 
@@ -800,8 +781,7 @@
 
 static void bxt_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 tmp, val;
 
@@ -830,8 +810,7 @@
 
 void intel_panel_disable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 
 	if (!panel->backlight.present)
@@ -843,7 +822,7 @@
 	 * backlight. This will leave the backlight on unnecessarily when
 	 * another client is not activated.
 	 */
-	if (dev->switch_power_state == DRM_SWITCH_POWER_CHANGING) {
+	if (dev_priv->dev->switch_power_state == DRM_SWITCH_POWER_CHANGING) {
 		DRM_DEBUG_DRIVER("Skipping backlight disable on vga switch\n");
 		return;
 	}
@@ -860,8 +839,7 @@
 
 static void lpt_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 pch_ctl1, pch_ctl2;
 
@@ -893,8 +871,7 @@
 
 static void pch_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	enum transcoder cpu_transcoder =
@@ -940,8 +917,7 @@
 
 static void i9xx_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 ctl, freq;
 
@@ -958,7 +934,7 @@
 	ctl = freq << 17;
 	if (panel->backlight.combination_mode)
 		ctl |= BLM_LEGACY_MODE;
-	if (IS_PINEVIEW(dev) && panel->backlight.active_low_pwm)
+	if (IS_PINEVIEW(dev_priv) && panel->backlight.active_low_pwm)
 		ctl |= BLM_POLARITY_PNV;
 
 	I915_WRITE(BLC_PWM_CTL, ctl);
@@ -972,14 +948,13 @@
 	 * 855gm only, but checking for gen2 is safe, as 855gm is the only gen2
 	 * that has backlight.
 	 */
-	if (IS_GEN2(dev))
+	if (IS_GEN2(dev_priv))
 		I915_WRITE(BLC_HIST_CTL, BLM_HISTOGRAM_ENABLE);
 }
 
 static void i965_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 ctl, ctl2, freq;
@@ -1012,8 +987,7 @@
 
 static void vlv_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 ctl, ctl2;
@@ -1044,8 +1018,7 @@
 
 static void bxt_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 	u32 pwm_ctl, val;
@@ -1102,8 +1075,7 @@
 
 void intel_panel_enable_backlight(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
 
@@ -1278,8 +1250,7 @@
  */
 static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 mul, clock;
 
 	if (I915_READ(SOUTH_CHICKEN1) & SPT_PWM_GRANULARITY)
@@ -1299,8 +1270,7 @@
  */
 static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	u32 mul, clock;
 
 	if (I915_READ(SOUTH_CHICKEN2) & LPT_PWM_GRANULARITY)
@@ -1393,8 +1363,7 @@
 
 static u32 get_backlight_max_vbt(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u16 pwm_freq_hz = dev_priv->vbt.backlight.pwm_freq_hz;
 	u32 pwm;
@@ -1427,8 +1396,7 @@
  */
 static u32 get_backlight_min_vbt(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	int min;
 
@@ -1453,8 +1421,7 @@
 
 static int lpt_setup_backlight(struct intel_connector *connector, enum pipe unused)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 pch_ctl1, pch_ctl2, val;
 
@@ -1483,8 +1450,7 @@
 
 static int pch_setup_backlight(struct intel_connector *connector, enum pipe unused)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;
 
@@ -1514,17 +1480,16 @@
 
 static int i9xx_setup_backlight(struct intel_connector *connector, enum pipe unused)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 ctl, val;
 
 	ctl = I915_READ(BLC_PWM_CTL);
 
-	if (IS_GEN2(dev) || IS_I915GM(dev) || IS_I945GM(dev))
+	if (IS_GEN2(dev_priv) || IS_I915GM(dev_priv) || IS_I945GM(dev_priv))
 		panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE;
 
-	if (IS_PINEVIEW(dev))
+	if (IS_PINEVIEW(dev_priv))
 		panel->backlight.active_low_pwm = ctl & BLM_POLARITY_PNV;
 
 	panel->backlight.max = ctl >> 17;
@@ -1552,8 +1517,7 @@
 
 static int i965_setup_backlight(struct intel_connector *connector, enum pipe unused)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 ctl, ctl2, val;
 
@@ -1586,8 +1550,7 @@
 
 static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 ctl, ctl2, val;
 
@@ -1608,7 +1571,7 @@
 
 	panel->backlight.min = get_backlight_min_vbt(connector);
 
-	val = _vlv_get_backlight(dev, pipe);
+	val = _vlv_get_backlight(dev_priv, pipe);
 	panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
 	panel->backlight.enabled = (ctl2 & BLM_PWM_ENABLE) &&
@@ -1620,8 +1583,7 @@
 static int
 bxt_setup_backlight(struct intel_connector *connector, enum pipe unused)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_panel *panel = &connector->panel;
 	u32 pwm_ctl, val;
 
@@ -1699,8 +1661,7 @@
 
 int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe)
 {
-	struct drm_device *dev = connector->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 	struct intel_panel *panel = &intel_connector->panel;
 	int ret;
@@ -1755,36 +1716,35 @@
 static void
 intel_panel_init_backlight_funcs(struct intel_panel *panel)
 {
-	struct intel_connector *intel_connector =
+	struct intel_connector *connector =
 		container_of(panel, struct intel_connector, panel);
-	struct drm_device *dev = intel_connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 
-	if (IS_BROXTON(dev)) {
+	if (IS_BROXTON(dev_priv)) {
 		panel->backlight.setup = bxt_setup_backlight;
 		panel->backlight.enable = bxt_enable_backlight;
 		panel->backlight.disable = bxt_disable_backlight;
 		panel->backlight.set = bxt_set_backlight;
 		panel->backlight.get = bxt_get_backlight;
 		panel->backlight.hz_to_pwm = bxt_hz_to_pwm;
-	} else if (HAS_PCH_LPT(dev) || HAS_PCH_SPT(dev)) {
+	} else if (HAS_PCH_LPT(dev_priv) || HAS_PCH_SPT(dev_priv)) {
 		panel->backlight.setup = lpt_setup_backlight;
 		panel->backlight.enable = lpt_enable_backlight;
 		panel->backlight.disable = lpt_disable_backlight;
 		panel->backlight.set = lpt_set_backlight;
 		panel->backlight.get = lpt_get_backlight;
-		if (HAS_PCH_LPT(dev))
+		if (HAS_PCH_LPT(dev_priv))
 			panel->backlight.hz_to_pwm = lpt_hz_to_pwm;
 		else
 			panel->backlight.hz_to_pwm = spt_hz_to_pwm;
-	} else if (HAS_PCH_SPLIT(dev)) {
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
 		panel->backlight.setup = pch_setup_backlight;
 		panel->backlight.enable = pch_enable_backlight;
 		panel->backlight.disable = pch_disable_backlight;
 		panel->backlight.set = pch_set_backlight;
 		panel->backlight.get = pch_get_backlight;
 		panel->backlight.hz_to_pwm = pch_hz_to_pwm;
-	} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		if (dev_priv->vbt.has_mipi) {
 			panel->backlight.setup = pwm_setup_backlight;
 			panel->backlight.enable = pwm_enable_backlight;
@@ -1799,7 +1759,7 @@
 			panel->backlight.get = vlv_get_backlight;
 			panel->backlight.hz_to_pwm = vlv_hz_to_pwm;
 		}
-	} else if (IS_GEN4(dev)) {
+	} else if (IS_GEN4(dev_priv)) {
 		panel->backlight.setup = i965_setup_backlight;
 		panel->backlight.enable = i965_enable_backlight;
 		panel->backlight.disable = i965_disable_backlight;