+#define DEFINE_OFFLOAD_TRIGGER(trigger_name, trigger) \
+	static ssize_t trigger_name##_show(struct device *dev, \
+				struct device_attribute *attr, char *buf) \
+	{ \
+		struct led_classdev *led_cdev = led_trigger_get_led(dev); \
+		int val; \
+		val = led_cdev->hw_control_configure(led_cdev, trigger, BLINK_MODE_READ); \
+		return sprintf(buf, "%d\n", val ? 1 : 0); \
+	} \
+	static ssize_t trigger_name##_store(struct device *dev, \
+					struct device_attribute *attr, \
+					const char *buf, size_t size) \
+	{ \
+		struct led_classdev *led_cdev = led_trigger_get_led(dev); \
+		unsigned long state; \
+		int cmd, ret; \
+		ret = kstrtoul(buf, 0, &state); \
+		if (ret) \
+			return ret; \
+		cmd = !!state ? BLINK_MODE_ENABLE : BLINK_MODE_DISABLE; \
+		/* Update the configuration with every change */ \
+		led_cdev->hw_control_configure(led_cdev, trigger, cmd); \
+		return size; \
+	} \
+	DEVICE_ATTR_RW(trigger_name)

These are pretty big macro magic functions. And there is little actual
macro in them. So make them simple functions which call helpers

	static ssize_t trigger_name##_show(struct device *dev, \
				struct device_attribute *attr, char *buf) \
	{ \
		return trigger_generic_store(dev, attr, buf, size, trigger); \
	} \
	static ssize_t trigger_name##_store(struct device *dev, \
					struct device_attribute *attr, \
					const char *buf, size_t size) \
	{ \
		return trigger_generic_store(dev, attr, buf, size, trigger); \
	} \

+/* The attrs will be placed dynamically based on the supported triggers */
+static struct attribute *phy_activity_attrs[PHY_ACTIVITY_MAX_TRIGGERS + 1];
+
+static int offload_phy_activity_activate(struct led_classdev *led_cdev)
+{
+	u32 checked_list = 0;
+	int i, trigger, ret;
+
+	/* Scan the supported offload triggers and expose them in sysfs if supported */
+	for (trigger = 0, i = 0; trigger < PHY_ACTIVITY_MAX_TRIGGERS; trigger++) {
+		if (!(checked_list & BLINK_TX) &&
+		    led_trigger_blink_mode_is_supported(led_cdev, BLINK_TX)) {
+			phy_activity_attrs[i++] = &dev_attr_blink_tx.attr;
+			checked_list |= BLINK_TX;
+		}

Please re-write this using tables, rather than all this repeated code.

       Andrew