| Message ID | 1373533573-12272-17-git-send-email-ming.lei@canonical.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index d997432..95e5dbf 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -630,16 +630,17 @@ 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); }
Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Cc: Johan Hovold <jhovold@gmail.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> --- drivers/usb/serial/quatech2.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)