linux-kernel - Re: [PATCH] serial: xuartps: add _

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Message-ID: <2877098.2SVXFizf2K@wuerfel>
Date:	Thu, 07 May 2015 11:27:39 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-serial@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Michal Simek <michal.simek@...inx.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Sören Brinkmann <soren.brinkmann@...inx.com>
Subject: Re: [PATCH] serial: xuartps: add __init to earlycon write method

On Thursday 07 May 2015 18:14:43 you wrote:
> 2015-05-07 18:08 GMT+09:00 Arnd Bergmann <arnd@...db.de>:
> > On Thursday 07 May 2015 18:02:39 Masahiro Yamada wrote:
> >> @@ -1075,7 +1075,8 @@ static void cdns_uart_console_putchar(struct uart_port *port, int ch)
> >>         writel(ch, port->membase + CDNS_UART_FIFO_OFFSET);
> >>  }
> >>
> >> -static void cdns_early_write(struct console *con, const char *s, unsigned n)
> >> +static void __init cdns_early_write(struct console *con, const char *s,
> >> +                                   unsigned n)
> >>  {
> >>         struct earlycon_device *dev = con->data;
> >>
> >>
> >
> > Why?
> >
> 
> I thought this function is used during the early boot stage.
> 
> I am seeing drivers/tty/serial/8250/8250_early.c
> for reference.
> 
> All the functions in this file are marked as __init.
> 
> Perhaps, am I misunderstanding?
> 

Makes sense, please explain that in the commit message and send the
patch again.

	Arnd
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