linux-kernel - Re: [PATCH v1 1/1] serial: max3100: Convert to_max3100

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Message-ID: <0efff014-43a2-b1e2-6690-515a6b2a3edd@linux.intel.com>
Date: Thu, 11 Apr 2024 14:20:29 +0300 (EEST)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
    LKML <linux-kernel@...r.kernel.org>, 
    linux-serial <linux-serial@...r.kernel.org>, 
    Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH v1 1/1] serial: max3100: Convert to_max3100_port() to be
 static inline

On Wed, 10 Apr 2024, Andy Shevchenko wrote:

> As Jiri rightfully pointed out the current to_max3100_port() macro
> implementation is fragile in a sense that it expects the variable
> name to be port, otherwise it blow up the build.
> 
> Change this to be static inline to prevent bad compilation.
> 
> Suggested-by: Jiri Slaby <jirislaby@...nel.org>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/tty/serial/max3100.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
> index 1e6b5763ce3f..07ee001640bb 100644
> --- a/drivers/tty/serial/max3100.c
> +++ b/drivers/tty/serial/max3100.c
> @@ -111,7 +111,10 @@ struct max3100_port {
>  	struct timer_list	timer;
>  };
>  
> -#define to_max3100_port(port)	container_of(port, struct max3100_port, port)
> +static inline struct max3100_port *to_max3100_port(struct uart_port *port)
> +{
> +	return container_of(port, struct max3100_port, port);
> +}
>  
>  static struct max3100_port *max3100s[MAX_MAX3100]; /* the chips */
>  static DEFINE_MUTEX(max3100s_lock);		   /* race on probe */
> 

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

It seems liteuart has the same trap.

-- 
 i.