USB Serial drivers can currently use the generic function
usb_serial_generic_submit_read_urbs() to submit a group of urbs when
starting up the device. The read bulk callback needs to be able to
submit a single urb. usb_serial_generic_submit_read_urb() does this,
but it is not exported and so only usable within generic functions,
in particular usb_serial_generic_read_bulk_callback().
Export this function so drivers can use it in there own read bulk
callback routine.
Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
drivers/usb/serial/generic.c | 5 +++--
include/linux/usb/serial.h | 2 ++
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 297665f..13e9b3b 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -253,8 +253,8 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct
*tty)
}
EXPORT_SYMBOL_GPL(usb_serial_generic_chars_in_buffer);
-static int usb_serial_generic_submit_read_urb(struct usb_serial_port *port,
- int index, gfp_t mem_flags)
+int usb_serial_generic_submit_read_urb(struct usb_serial_port *port,
+ int index, gfp_t mem_flags)
{
int res;
@@ -276,6 +276,7 @@ static int usb_serial_generic_submit_read_urb(struct
usb_serial_port *port,
return 0;
}
+EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urb);
int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port,
gfp_t mem_flags)
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index b9b0f7b4..a85e35b 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -337,6 +337,8 @@ extern int usb_serial_generic_get_icount(struct tty_struct
*tty,
struct serial_icounter_struct *icount);
extern int usb_serial_generic_register(void);
extern void usb_serial_generic_deregister(void);
+extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port,
+ int index, gfp_t mem_flags);
extern int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port,
gfp_t mem_flags);
extern void usb_serial_generic_process_read_urb(struct urb *urb);
--
1.7.10.4
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