HID_CUSTOM_MAX_CORE_ATTRS 21 drivers/hid/hid-sensor-custom.c #define HID_CUSTOM_TOTAL_ATTRS (HID_CUSTOM_MAX_CORE_ATTRS + 1) HID_CUSTOM_MAX_CORE_ATTRS 29 drivers/hid/hid-sensor-custom.c struct device_attribute sd_attrs[HID_CUSTOM_MAX_CORE_ATTRS];