tty/serial/serial_core.c

1230 	struct uart_icount cprev, cnow;
1247 		memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));
1252 		if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1253 		    ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1254 		    ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
1255 		    ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
1268 		cprev = cnow;
1287 	struct uart_icount cnow;
1294 	memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));
1298 	icount->cts         = cnow.cts;
1299 	icount->dsr         = cnow.dsr;
1300 	icount->rng         = cnow.rng;
1301 	icount->dcd         = cnow.dcd;
1302 	icount->rx          = cnow.rx;
1303 	icount->tx          = cnow.tx;
1304 	icount->frame       = cnow.frame;
1305 	icount->overrun     = cnow.overrun;
1306 	icount->parity      = cnow.parity;
1307 	icount->brk         = cnow.brk;
1308 	icount->buf_overrun = cnow.buf_overrun;