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-rw-r--r--drivers/serial/sunsu.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index 0cc879eb1c0..5959e6755a8 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -269,7 +269,10 @@ static void sunsu_stop_tx(struct uart_port *port)
__stop_tx(up);
- if (up->port.type == PORT_16C950 && tty_stop /*FIXME*/) {
+ /*
+ * We really want to stop the transmitter from sending.
+ */
+ if (up->port.type == PORT_16C950) {
up->acr |= UART_ACR_TXDIS;
serial_icr_write(up, UART_ACR, up->acr);
}
@@ -283,10 +286,11 @@ static void sunsu_start_tx(struct uart_port *port)
up->ier |= UART_IER_THRI;
serial_out(up, UART_IER, up->ier);
}
+
/*
- * We only do this from uart_start
+ * Re-enable the transmitter if we disabled it.
*/
- if (tty_start && up->port.type == PORT_16C950 /*FIXME*/) {
+ if (up->port.type == PORT_16C950 && up->acr & UART_ACR_TXDIS) {
up->acr &= ~UART_ACR_TXDIS;
serial_icr_write(up, UART_ACR, up->acr);
}