Re: [PATCH] tty: serial/8250: remove console dependency for mediatek

Eddie Huang
2015-05-20T01:34:39Z

Hi Arnd,

On Tue, 2015-05-19 at 22:11 +0200, Arnd Bergmann wrote:
> If the mediatek serial port driver is built-in, but serial
> console is disabled in Kconfig (e.g. when the serial driver
> itself is a loadable module), we get this build error:
>
> drivers/built-in.o: In function `early_mtk8250_setup':
> undefined reference to `early_serial8250_setup'
>
> To avoid that problem, this patch encloses the early_mtk8250_setup
> function in #ifdef CONFIG_SERIAL_8250_CONSOLE, the same symbol
> that guards the early_serial8250_setup function.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
> index 4488c2bdb7ba..78883ca64ddd 100644
> --- a/drivers/tty/serial/8250/8250_mtk.c
> +++ b/drivers/tty/serial/8250/8250_mtk.c
> @@ -305,6 +305,7 @@ static struct platform_driver mtk8250_platform_driver = {
> };
> module_platform_driver(mtk8250_platform_driver);
>
> +#ifdef CONFIG_SERIAL_8250_CONSOLE
> static int __init early_mtk8250_setup(struct earlycon_device *device,
> const char *options)
> {
> @@ -317,6 +318,7 @@ static int __init early_mtk8250_setup(struct earlycon_device *device,
> }
>
> OF_EARLYCON_DECLARE(mtk8250, "mediatek,mt6577-uart", early_mtk8250_setup);
> +#endif
>
> MODULE_AUTHOR("Matthias Brugger");
> MODULE_LICENSE("GPL");
>

Acked-by: Eddie Huang <eddie.huang@mediatek.com>

Thanks your correction.

Eddie