linux-kernel - Re: [PATCH v1 2/3] serial: 8250_exar: Extract exar_get

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Date:   Wed, 9 Jun 2021 14:41:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jirislaby@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: Re: [PATCH v1 2/3] serial: 8250_exar: Extract exar_get_platform()
 helper

On Tue, Jun 08, 2021 at 05:42:38PM +0300, Andy Shevchenko wrote:
> We would like to use DMI matching in other functions as well.
> Hence, extract it as exar_get_platform() helper function.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/tty/serial/8250/8250_exar.c | 20 ++++++++++++--------
>  1 file changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
> index bd4e9f6ac29c..3ffeedc29c83 100644
> --- a/drivers/tty/serial/8250/8250_exar.c
> +++ b/drivers/tty/serial/8250/8250_exar.c
> @@ -501,23 +501,27 @@ static const struct dmi_system_id exar_platforms[] = {
>  	{}
>  };
>  
> +static const struct exar8250_platform *exar_get_platform(void)
> +{
> +	const struct dmi_system_id *dmi_match;
> +
> +	dmi_match = dmi_first_match(exar_platforms);
> +	if (dmi_match)
> +		return dmi_match->driver_data;
> +
> +	return &exar8250_default_platform;
> +}
> +
>  static int
>  pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev,
>  		   struct uart_8250_port *port, int idx)
>  {
> -	const struct exar8250_platform *platform;
> -	const struct dmi_system_id *dmi_match;
> +	const struct exar8250_platform *platform = exar_get_platform();
>  	unsigned int offset = idx * 0x400;
>  	unsigned int baud = 7812500;
>  	u8 __iomem *p;
>  	int ret;
>  
> -	dmi_match = dmi_first_match(exar_platforms);
> -	if (dmi_match)
> -		platform = dmi_match->driver_data;
> -	else
> -		platform = &exar8250_default_platform;
> -
>  	port->port.uartclk = baud * 16;
>  	port->port.rs485_config = platform->rs485_config;
>  
> -- 
> 2.30.2
> 

Do not mix "fixes with features" in a single series, as I now have to
pick it apart and apply it to different branches by hand :(

Please do different series for the two different things if at all
possible.

thanks,

greg k-h