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 410 drivers/usb/serial/cp210x.c, line 1714 drivers/usb/serial/cyberjack.c, line 114 drivers/usb/serial/cypress_m8.c, line 493 drivers/usb/serial/digi_acceleport.c, line 1223 drivers/usb/serial/f81232.c, line 962 drivers/usb/serial/f81534.c, line 1399 drivers/usb/serial/ftdi_sio.c, line 2275 drivers/usb/serial/garmin_gps.c, line 1390 drivers/usb/serial/io_edgeport.c, line 3076 drivers/usb/serial/io_ti.c, line 2616 drivers/usb/serial/iuu_phoenix.c, line 90 drivers/usb/serial/keyspan.c, line 2970 drivers/usb/serial/keyspan_pda.c, line 670 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 1754 drivers/usb/serial/mos7840.c, line 1607 drivers/usb/serial/mxuport.c, line 1140 drivers/usb/serial/omninet.c, line 119 drivers/usb/serial/opticon.c, line 383 drivers/usb/serial/oti6858.c, line 340 drivers/usb/serial/pl2303.c, line 444 drivers/usb/serial/quatech2.c, line 720 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 364 drivers/usb/serial/symbolserial.c, line 158 drivers/usb/serial/ti_usb_3410_5052.c, line 625 drivers/usb/serial/upd78f0730.c, line 172 drivers/usb/serial/usb_wwan.c, line 527 drivers/usb/serial/usb_wwan.c, line 553 drivers/usb/serial/whiteheat.c, line 295 drivers/usb/serial/whiteheat.c, line 343 include/linux/usb/serial.h, line 122