USB: serial: export usb_serial_generic_write_start

Export usb_serial_generic_write_start which is needed when implementing
a custom resume function while still relying on the generic write
implementation.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 31f78290c0e4..2b01ec8651c2 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -129,7 +129,7 @@ int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port,
  *
  * Return: Zero on success or if busy, otherwise a negative errno value.
  */
-static int usb_serial_generic_write_start(struct usb_serial_port *port,
+int usb_serial_generic_write_start(struct usb_serial_port *port,
                                                         gfp_t mem_flags)
 {
         struct urb *urb;
@@ -184,6 +184,7 @@ retry:
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_write_start);
 
 /**
  * usb_serial_generic_write - generic write function