Error: Cannot open file include/linux/usb/mctp-usb.h
include/uapi/linux/usb/ch9.h:475: warning: No description found for return value of 'usb_endpoint_num'
include/uapi/linux/usb/ch9.h:487: warning: No description found for return value of 'usb_endpoint_type'
include/uapi/linux/usb/ch9.h:498: warning: No description found for return value of 'usb_endpoint_dir_in'
include/uapi/linux/usb/ch9.h:510: warning: No description found for return value of 'usb_endpoint_dir_out'
include/uapi/linux/usb/ch9.h:522: warning: No description found for return value of 'usb_endpoint_xfer_bulk'
include/uapi/linux/usb/ch9.h:535: warning: No description found for return value of 'usb_endpoint_xfer_control'
include/uapi/linux/usb/ch9.h:549: warning: No description found for return value of 'usb_endpoint_xfer_int'
include/uapi/linux/usb/ch9.h:563: warning: No description found for return value of 'usb_endpoint_xfer_isoc'
include/uapi/linux/usb/ch9.h:577: warning: No description found for return value of 'usb_endpoint_is_bulk_in'
include/uapi/linux/usb/ch9.h:590: warning: No description found for return value of 'usb_endpoint_is_bulk_out'
include/uapi/linux/usb/ch9.h:603: warning: No description found for return value of 'usb_endpoint_is_int_in'
include/uapi/linux/usb/ch9.h:616: warning: No description found for return value of 'usb_endpoint_is_int_out'
include/uapi/linux/usb/ch9.h:629: warning: No description found for return value of 'usb_endpoint_is_isoc_in'
include/uapi/linux/usb/ch9.h:642: warning: No description found for return value of 'usb_endpoint_is_isoc_out'
include/uapi/linux/usb/ch9.h:653: warning: No description found for return value of 'usb_endpoint_maxp'
include/uapi/linux/usb/ch9.h:665: warning: No description found for return value of 'usb_endpoint_maxp_mult'
include/uapi/linux/usb/ch9.h:476: warning: No description found for return value of 'usb_endpoint_num'
include/uapi/linux/usb/ch9.h:488: warning: No description found for return value of 'usb_endpoint_type'
include/uapi/linux/usb/ch9.h:499: warning: No description found for return value of 'usb_endpoint_dir_in'
include/uapi/linux/usb/ch9.h:511: warning: No description found for return value of 'usb_endpoint_dir_out'
include/uapi/linux/usb/ch9.h:523: warning: No description found for return value of 'usb_endpoint_xfer_bulk'
include/uapi/linux/usb/ch9.h:536: warning: No description found for return value of 'usb_endpoint_xfer_control'
include/uapi/linux/usb/ch9.h:550: warning: No description found for return value of 'usb_endpoint_xfer_int'
include/uapi/linux/usb/ch9.h:564: warning: No description found for return value of 'usb_endpoint_xfer_isoc'
include/uapi/linux/usb/ch9.h:578: warning: No description found for return value of 'usb_endpoint_is_bulk_in'
include/uapi/linux/usb/ch9.h:591: warning: No description found for return value of 'usb_endpoint_is_bulk_out'
include/uapi/linux/usb/ch9.h:604: warning: No description found for return value of 'usb_endpoint_is_int_in'
include/uapi/linux/usb/ch9.h:617: warning: No description found for return value of 'usb_endpoint_is_int_out'
include/uapi/linux/usb/ch9.h:630: warning: No description found for return value of 'usb_endpoint_is_isoc_in'
include/uapi/linux/usb/ch9.h:643: warning: No description found for return value of 'usb_endpoint_is_isoc_out'
include/uapi/linux/usb/ch9.h:654: warning: No description found for return value of 'usb_endpoint_maxp'
include/uapi/linux/usb/ch9.h:666: warning: No description found for return value of 'usb_endpoint_maxp_mult'