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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@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2012-10-29 10:56:25 +01:00 • committed by Greg Kroah-Hartman
parent a4afff6b32
commit 428d998855
1 changed files with 1 additions and 0 deletions
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drivers/usb/serial/generic.c
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@ -262,6 +262,7 @@ 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)