[PATCH 4/5] USB: serial: export usb_serial_generic_chars_in_buffer

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Export generic chars_in_buffer implementation so it can be used in
subdrivers in combination with checks of any hardware buffers.

Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
---
 drivers/usb/serial/generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 9b026bf..e52fad9 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -266,6 +266,7 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty)
 	dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
 	return chars;
 }
+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)
-- 
1.7.12

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