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/usb_wwan.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 8536578..92c9fa2 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -312,6 +312,7 @@ static void usb_wwan_outdat_callback(struct urb *urb)
struct usb_wwan_port_private *portdata;
struct usb_wwan_intf_private *intfdata;
int i;
+ unsigned long flags;
port = urb->context;
intfdata = port->serial->private;
@@ -319,9 +320,9 @@ static void usb_wwan_outdat_callback(struct urb *urb)
usb_serial_port_softint(port);
usb_autopm_put_interface_async(port->serial->interface);
portdata = usb_get_serial_port_data(port);
- spin_lock(&intfdata->susp_lock);
+ spin_lock_irqsave(&intfdata->susp_lock, flags);
intfdata->in_flight--;
- spin_unlock(&intfdata->susp_lock);
+ spin_unlock_irqrestore(&intfdata->susp_lock, flags);
for (i = 0; i < N_OUT_URB; ++i) {
if (portdata->out_urbs[i] == urb) {
--
1.7.9.5
--
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