diff options
| -rw-r--r-- | drivers/usb/gadget/function/u_serial.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 41dee7c8cc7c..ab544f6824be 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1505,6 +1505,13 @@ void gserial_suspend(struct gserial *gser) spin_unlock_irqrestore(&serial_port_lock, flags); if (!gserial_wakeup_host(gser)) return; + + /* Check if port is valid after acquiring lock back */ + spin_lock_irqsave(&serial_port_lock, flags); + if (!port) { + spin_unlock_irqrestore(&serial_port_lock, flags); + return; + } } spin_lock(&port->port_lock); |