Function at include/linux/usb/serial.h, line 122 References: drivers/usb/serial/ark3116.c, line 138 drivers/usb/serial/belkin_sa.c, line 132 drivers/usb/serial/ch341.c, line 411 drivers/usb/serial/cp210x.c, line 1884 drivers/usb/serial/cyberjack.c, line 114 drivers/usb/serial/cypress_m8.c, line 493 drivers/usb/serial/digi_acceleport.c, line 1224 drivers/usb/serial/f81232.c, line 954 drivers/usb/serial/f81534.c, line 1421 drivers/usb/serial/ftdi_sio.c, line 2264 drivers/usb/serial/garmin_gps.c, line 1390 drivers/usb/serial/io_edgeport.c, line 3021 drivers/usb/serial/io_ti.c, line 2574 drivers/usb/serial/iuu_phoenix.c, line 90 drivers/usb/serial/keyspan.c, line 2950 drivers/usb/serial/keyspan_pda.c, line 704 drivers/usb/serial/kl5kusb105.c, line 229 drivers/usb/serial/kobil_sct.c, line 140 drivers/usb/serial/mct_u232.c, line 398 drivers/usb/serial/metro-usb.c, line 254 drivers/usb/serial/mos7720.c, line 1905 drivers/usb/serial/mos7840.c, line 1587 drivers/usb/serial/mxuport.c, line 1140 drivers/usb/serial/omninet.c, line 121 drivers/usb/serial/opticon.c, line 366 drivers/usb/serial/oti6858.c, line 340 drivers/usb/serial/pl2303.c, line 527 drivers/usb/serial/quatech2.c, line 705 drivers/usb/serial/sierra.c, line 899 drivers/usb/serial/sierra.c, line 909 drivers/usb/serial/spcp8x5.c, line 165 drivers/usb/serial/ssu100.c, line 349 drivers/usb/serial/symbolserial.c, line 158 drivers/usb/serial/ti_usb_3410_5052.c, line 619 drivers/usb/serial/upd78f0730.c, line 169 drivers/usb/serial/usb_wwan.c, line 482 drivers/usb/serial/usb_wwan.c, line 508 drivers/usb/serial/whiteheat.c, line 294 drivers/usb/serial/whiteheat.c, line 342 include/linux/usb/serial.h, line 122