diff options
| author | Michal Meloun <mmel@FreeBSD.org> | 2016-02-12 05:14:58 +0000 |
|---|---|---|
| committer | Michal Meloun <mmel@FreeBSD.org> | 2016-02-12 05:14:58 +0000 |
| commit | 3c7b90774d09d8d7c367e4144f7d57b9bfb87498 (patch) | |
| tree | 6f1e287d4a72ba38816337d3e1c0563312cf69d2 /sys/dev/uart/uart_dev_ns8250.c | |
| parent | 4b9a5d61f20e0a2430fe4e755620eb223d502d5e (diff) | |
Notes
Diffstat (limited to 'sys/dev/uart/uart_dev_ns8250.c')
| -rw-r--r-- | sys/dev/uart/uart_dev_ns8250.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/dev/uart/uart_dev_ns8250.c b/sys/dev/uart/uart_dev_ns8250.c index 3bba676c5dc6..9802294d3038 100644 --- a/sys/dev/uart/uart_dev_ns8250.c +++ b/sys/dev/uart/uart_dev_ns8250.c @@ -708,6 +708,7 @@ ns8250_bus_ipend(struct uart_softc *sc) if (iir & IIR_TXRDY) { ipend |= SER_INT_TXIDLE; uart_setreg(bas, REG_IER, ns8250->ier); + uart_barrier(bas); } else ipend |= SER_INT_SIGCHG; } @@ -979,12 +980,12 @@ ns8250_bus_transmit(struct uart_softc *sc) uart_lock(sc->sc_hwmtx); while ((uart_getreg(bas, REG_LSR) & LSR_THRE) == 0) ; - uart_setreg(bas, REG_IER, ns8250->ier | IER_ETXRDY); - uart_barrier(bas); for (i = 0; i < sc->sc_txdatasz; i++) { uart_setreg(bas, REG_DATA, sc->sc_txbuf[i]); uart_barrier(bas); } + uart_setreg(bas, REG_IER, ns8250->ier | IER_ETXRDY); + uart_barrier(bas); if (broken_txfifo) ns8250_drain(bas, UART_DRAIN_TRANSMITTER); else |