linux-kernel - Re: [PATCH -next] serial: 8250: Fix serial port driver for OF platform devices

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Date:	Thu, 07 Jan 2016 11:38:19 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] serial: 8250: Fix serial port driver for OF platform devices

On Wednesday 06 January 2016 16:23:41 Guenter Roeck wrote:
> Commit afd7f88f1577 ("serial: 8250: move of_serial code to 8250 directory")
> moved the serial port driver for Open Firmware platform devices from one
> directory to another, but a mixup in Kconfig options resulted in the driver
> never being built. This results in runtime failures for some xtensa,
> openrisc, and powerpc configurations.
> 
> Fixes: afd7f88f1577 ("serial: 8250: move of_serial code to 8250 directory")
> Cc: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
> It might make sense to merge this patch with the commit introducing the problem.

Acked-by: Arnd Bergmann <arnd@...db.de>

> 
>  drivers/tty/serial/8250/8250_of.c | 3 +--
>  drivers/tty/serial/8250/Kconfig   | 5 +++++
>  2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
> index d66fd24f87cf..33021c1f7d55 100644
> --- a/drivers/tty/serial/8250/8250_of.c
> +++ b/drivers/tty/serial/8250/8250_of.c
> @@ -18,10 +18,9 @@
>  #include <linux/of_address.h>
>  #include <linux/of_irq.h>
>  #include <linux/of_platform.h>
> -#include <linux/nwpserial.h>
>  #include <linux/clk.h>
>  
> -#include "8250/8250.h"
> +#include "8250.h"
>  
>  struct of_serial_info {
>  	struct clk *clk;
> diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
> index b03cb5175113..e5ab94e381fb 100644
> --- a/drivers/tty/serial/8250/Kconfig
> +++ b/drivers/tty/serial/8250/Kconfig
> @@ -378,9 +378,14 @@ config SERIAL_8250_MID
>  	  present on the UART found on Intel Medfield SOC and various other
>  	  Intel platforms.
>  
> +config SERIAL_8250_OF
> +	tristate
> +	depends on SERIAL_8250 && OF
> +
>  config SERIAL_OF_PLATFORM
>  	tristate "Devicetree based probing for 8250 ports"
>  	depends on SERIAL_8250 && OF
> +	select SERIAL_8250_OF
>  	help
>  	  This option is used for all 8250 compatible serial ports that
>  	  are probed through devicetree, including Open Firmware based
> 

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