Symbol: FTDI_RS0_DSR
drivers/usb/serial/ftdi_sio.c
1102
#define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
drivers/usb/serial/ftdi_sio.c
2425
if (diff_status & FTDI_RS0_DSR)