Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
Cc: Johan Hovold <jhov...@gmail.com>
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/usb/serial/quatech2.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index a24d59a..4daa5c9 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -632,16 +632,17 @@ static void qt2_write_bulk_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct qt2_port_private *port_priv;
+ unsigned long flags;
port = urb->context;
port_priv = usb_get_serial_port_data(port);
- spin_lock(&port_priv->urb_lock);
+ spin_lock_irqsave(&port_priv->urb_lock, flags);
port_priv->urb_in_use = false;
usb_serial_port_softint(port);
- spin_unlock(&port_priv->urb_lock);
+ spin_unlock_irqrestore(&port_priv->urb_lock, flags);
}
--
1.7.9.5
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