You're allowed to call gs_buf_put with a zero count, and it's not a common case that deserves optimizing. --- drivers/usb/gadget/u_serial.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 86e9ffc..427f9b6 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -881,8 +881,7 @@ static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count) port->port_num, tty, count); spin_lock_irqsave(&port->port_lock, flags); - if (count) - count = gs_buf_put(&port->port_write_buf, buf, count); + count = gs_buf_put(&port->port_write_buf, buf, count); /* treat count == 0 as flush_chars() */ if (port->port_usb) status = gs_start_tx(port); -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
