include/linux/wwan.h:103: warning: No description found for return value of 'wwan_create_port'
include/linux/wwan.h:145: warning: No description found for return value of 'wwan_port_get_drvdata'
include/linux/wwan.h:107: warning: No description found for return value of 'wwan_create_port'
include/linux/wwan.h:149: warning: No description found for return value of 'wwan_port_get_drvdata'