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path: root/drivers/tty/serial/nwpserial.c
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Diffstat (limited to 'drivers/tty/serial/nwpserial.c')
-rw-r--r--drivers/tty/serial/nwpserial.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index 549c70a2a63e..693bc6c2561e 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -149,7 +149,10 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
tty_insert_flip_char(port, ch, TTY_NORMAL);
} while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
+ spin_unlock(&up->port.lock);
tty_flip_buffer_push(port);
+ spin_lock(&up->port.lock);
+
ret = IRQ_HANDLED;
/* clear interrupt */