aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/serial/nwpserial.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/serial/nwpserial.c')
-rw-r--r--drivers/serial/nwpserial.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/serial/nwpserial.c b/drivers/serial/nwpserial.c
index 32f3eaf0d262..9e150b19d726 100644
--- a/drivers/serial/nwpserial.c
+++ b/drivers/serial/nwpserial.c
@@ -145,11 +145,13 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
145 ch = dcr_read(up->dcr_host, UART_RX); 145 ch = dcr_read(up->dcr_host, UART_RX);
146 if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID) 146 if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID)
147 tty_insert_flip_char(tty, ch, TTY_NORMAL); 147 tty_insert_flip_char(tty, ch, TTY_NORMAL);
148 } while (dcr_read(up->dcr_host, UART_RX) & UART_LSR_DR); 148 } while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
149 149
150 tty_flip_buffer_push(tty); 150 tty_flip_buffer_push(tty);
151 ret = IRQ_HANDLED; 151 ret = IRQ_HANDLED;
152 152
153 /* clear interrupt */
154 dcr_write(up->dcr_host, UART_IIR, 1);
153out: 155out:
154 spin_unlock(&up->port.lock); 156 spin_unlock(&up->port.lock);
155 return ret; 157 return ret;