usb-serial: possible irq lock inversion (PPP vs. usb/serial)
=========================================================
[ INFO: possible irq lock inversion dependency detected ]
diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c
index 789771e..1e07dfa 100644
--- a/drivers/usb/serial/safe_serial.c
+++ b/drivers/usb/serial/safe_serial.c
@@ -298,14 +298,14 @@
dbg ("%s - write request of 0 bytes", __FUNCTION__);
return (0);
}
- 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);
packet_length = port->bulk_out_size; // get max packetsize