diff options
Diffstat (limited to 'drivers/serial/nwpserial.c')
-rw-r--r-- | drivers/serial/nwpserial.c | 4 |
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); | ||
153 | out: | 155 | out: |
154 | spin_unlock(&up->port.lock); | 156 | spin_unlock(&up->port.lock); |
155 | return ret; | 157 | return ret; |