Symbol: TTYHWDSR
src/add-ons/kernel/drivers/ports/pc_serial/SerialDevice.cpp
317
SignalControlLineState(TTYHWDSR, msr & MSR_DSR);
src/add-ons/kernel/drivers/ports/pc_serial/SerialDevice.cpp
507
SignalControlLineState(TTYHWDSR, msr & MSR_DSR);
src/add-ons/kernel/drivers/ports/usb_serial/SerialDevice.cpp
252
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWDSR, false);
src/add-ons/kernel/generic/tty/tty.cpp
2107
case TTYHWDSR: