drm/i915: reduce indent in i9xx_hpd_irq_handler

Bail out early if nothing to do. No functional changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_irq.c

@@ -1756,28 +1756,29 @@ static void i9xx_hpd_irq_handler(struct drm_device *dev)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
 
-	if (hotplug_status) {
-		I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
-		/*
-		 * Make sure hotplug status is cleared before we clear IIR, or else we
-		 * may miss hotplug events.
-		 */
-		POSTING_READ(PORT_HOTPLUG_STAT);
+	if (!hotplug_status)
+		return;
 
-		if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
-			u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
+	I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
+	/*
+	 * Make sure hotplug status is cleared before we clear IIR, or else we
+	 * may miss hotplug events.
+	 */
+	POSTING_READ(PORT_HOTPLUG_STAT);
 
-			intel_hpd_irq_handler(dev, hotplug_trigger, 0, hpd_status_g4x);
-		} else {
-			u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
+	if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
+		u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
 
-			intel_hpd_irq_handler(dev, hotplug_trigger, 0, hpd_status_i915);
-		}
+		intel_hpd_irq_handler(dev, hotplug_trigger, 0, hpd_status_g4x);
+	} else {
+		u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
 
-		if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)) &&
-		    hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X)
-			dp_aux_irq_handler(dev);
+		intel_hpd_irq_handler(dev, hotplug_trigger, 0, hpd_status_i915);
 	}
+
+	if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)) &&
+	    hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X)
+		dp_aux_irq_handler(dev);
 }
 
 static irqreturn_t valleyview_irq_handler(int irq, void *arg)