1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index cf2213bae0e0..fb3b6b7b9065 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -826,6 +826,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
         spin_lock_irqsave(&priv->lock, flags);
         priv->line_status = data[status_idx];
         spin_unlock_irqrestore(&priv->lock, flags);
+        wake_up_interruptible (&priv->delta_msr_wait);
 
 exit:
         return;