usb-serial: possible irq lock inversion (PPP vs. usb/serial)
=========================================================
[ INFO: possible irq lock inversion dependency detected ]
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 1727135..21cbaa0 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -175,14 +175,14 @@
/* only do something if we have a bulk out endpoint */
if (serial->num_bulk_out) {
- spin_lock(&port->lock);
+ spin_lock_bh(&port->lock);
if (port->write_urb_busy) {
- spin_unlock(&port->lock);
+ spin_unlock_bh(&port->lock);
dbg("%s - already writing", __FUNCTION__);
return 0;
}
port->write_urb_busy = 1;
- spin_unlock(&port->lock);
+ spin_unlock_bh(&port->lock);
count = (count > port->bulk_out_size) ? port->bulk_out_size : count;