USB: serial: return errors from break handling

[platform/kernel/linux-rpi.git] / drivers / usb / serial / usb_debug.c

diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index aaf4813..6934970 100644 (file)
--- a/drivers/usb/serial/usb_debug.c
+++ b/drivers/usb/serial/usb_debug.c
@@ -47,12 +47,19 @@ MODULE_DEVICE_TABLE(usb, id_table_combined);
 /* This HW really does not support a serial break, so one will be
  * emulated when ever the break state is set to true.
  */
-static void usb_debug_break_ctl(struct tty_struct *tty, int break_state)
+static int usb_debug_break_ctl(struct tty_struct *tty, int break_state)
 {
        struct usb_serial_port *port = tty->driver_data;
+       int ret;
+
        if (!break_state)
-               return;
-       usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE);
+               return 0;
+
+       ret = usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE);
+       if (ret < 0)
+               return ret;
+
+       return 0;
 }
 
 static void usb_debug_process_read_urb(struct urb *urb)