linux-kernel - Re: [PATCH] serial: 8250: remove return statements from void function

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Date:	Sun, 24 May 2015 12:46:09 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:	linux-serial@...r.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Jiri Slaby <jslaby@...e.cz>,
	Peter Hurley <peter@...leysoftware.com>,
	Alan Cox <alan@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
	Tony Lindgren <tony@...mide.com>,
	Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
Subject: Re: [PATCH] serial: 8250: remove return statements from void function

On Mon, May 11, 2015 at 12:30:22PM +0900, Masahiro Yamada wrote:
> serial8250_set_mctrl() is a void type function.  Returning something
> does not look nice.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
> 
>  drivers/tty/serial/8250/8250_core.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
> index 4882027..146f56c 100644
> --- a/drivers/tty/serial/8250/8250_core.c
> +++ b/drivers/tty/serial/8250/8250_core.c
> @@ -2019,8 +2019,9 @@ EXPORT_SYMBOL_GPL(serial8250_do_set_mctrl);
>  static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
>  {
>  	if (port->set_mctrl)
> -		return port->set_mctrl(port, mctrl);
> -	return serial8250_do_set_mctrl(port, mctrl);
> +		port->set_mctrl(port, mctrl);
> +	else
> +		serial8250_do_set_mctrl(port, mctrl);
>  }

You just changed the logic here!
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