linux-kernel - Re: [PATCH] serial: max310x: add comments for membase address workaround

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Message-ID: <2023080417-surname-sizzling-591e@gregkh>
Date:   Fri, 4 Aug 2023 15:07:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Hugo Villeneuve <hugo@...ovil.com>
Cc:     Jiri Slaby <jirislaby@...nel.org>, linux-serial@...r.kernel.org,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] serial: max310x: add comments for membase address
 workaround

On Thu, Aug 03, 2023 at 10:05:51AM -0400, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@...onoff.com>
> 
> Add comments about workaround used to configure membase address. This
> follows suggestions made during review of a sc16is7xx driver patch to
> add the same workaround.
> 
> Link: https://lore.kernel.org/lkml/2936e18f-44ea-faed-9fa0-2ddefe7c3194@linux.intel.com
> Link: https://lore.kernel.org/lkml/20230801131655.80bd8f97f018dda6155d65f6@hugovil.com/
> Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
> ---
>  drivers/tty/serial/max310x.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
> index 416d553b73a7..5903dd033fd0 100644
> --- a/drivers/tty/serial/max310x.c
> +++ b/drivers/tty/serial/max310x.c
> @@ -1369,6 +1369,11 @@ static int max310x_probe(struct device *dev, const struct max310x_devtype *devty
>  		s->p[i].port.flags	= UPF_FIXED_TYPE | UPF_LOW_LATENCY;
>  		s->p[i].port.iotype	= UPIO_PORT;
>  		s->p[i].port.iobase	= i;
> +		/*
> +		 * Use all ones as membase to make sure uart_configure_port() in
> +		 * serial_core.c does not abort for SPI/I2C devices where the
> +		 * membase address is not applicable.
> +		 */
>  		s->p[i].port.membase	= (void __iomem *)~0;
>  		s->p[i].port.uartclk	= uartclk;
>  		s->p[i].port.rs485_config = max310x_rs485_config;
> 
> base-commit: 426263d5fb400ccde5444748693dc75bda18f01e
> -- 
> 2.30.2
> 

Meta-comment, your email system is not correct and is not able to be
verified as I get the following when attempting to apply your patch:

---
  ✗ [PATCH] serial: max310x: add comments for membase address workaround
  ---
  ✗ BADSIG: DKIM/hugovil.com

Please fix up for future submissions.

thanks,

greg k-h