[PATCH V7 2/4] USB: serial: f81232: fix interrupt worker not stop

[Ji-Ze Hong (Peter Hong)]

The F81232 will use LSR/Interrupt worker to handle LSR error & MSR
change. This patch will fix the interrupt work should stop in close()
and suspend().

Cc: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@xxxxxxxxx>
---
V7:
	1: first introduce to this series patch.

 drivers/usb/serial/f81232.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 18d3fcf2907a..7c7495ae5600 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -576,6 +576,7 @@ static void f81232_close(struct usb_serial_port *port)
 	usb_serial_generic_close(port);
 	usb_kill_urb(port->interrupt_in_urb);
 	flush_work(&port_priv->lsr_work);
+	flush_work(&port_priv->interrupt_work);
 	port_priv->is_port_open = false;
 
 	mutex_unlock(&port_priv->lock);
@@ -679,8 +680,10 @@ static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
 
 	usb_kill_urb(port->interrupt_in_urb);
 
-	if (port_priv)
+	if (port_priv) {
 		flush_work(&port_priv->lsr_work);
+		flush_work(&port_priv->interrupt_work);
+	}
 
 	return 0;
 }
-- 
2.7.4