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 <jhov...@gmail.com>
---
drivers/usb/serial/generic.c | 3 ++-
include/linux/usb/serial.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 31f7829..2b01ec8 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
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index d528b80..704a1ab 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -320,6 +320,8 @@ extern struct usb_serial_port
*usb_serial_port_get_by_minor(unsigned int minor);
extern void usb_serial_put(struct usb_serial *serial);
extern int usb_serial_generic_open(struct tty_struct *tty,
struct usb_serial_port *port);
+extern int usb_serial_generic_write_start(struct usb_serial_port *port,
+ gfp_t mem_flags);
extern int usb_serial_generic_write(struct tty_struct *tty,
struct usb_serial_port *port, const unsigned char *buf, int count);
extern void usb_serial_generic_close(struct usb_serial_port *port);
--
1.8.3.2
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