linux-kernel - Re: [PATCH 2/2] serial: 8250_platform: fix uart_8250

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Message-ID: <ZrM9HlzTjX0MjbM5@sunil-laptop>
Date: Wed, 7 Aug 2024 14:53:42 +0530
From: Sunil V L <sunilvl@...tanamicro.com>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH 2/2] serial: 8250_platform: fix uart_8250_port initializer

Hi Arnd,

On Wed, Aug 07, 2024 at 09:57:44AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The first element in uart_8250_port is a structure, so initializing
> it to 0 causes a warning on newer compilers:
> 
> drivers/tty/serial/8250/8250_platform.c: In function 'serial8250_platform_probe':
> drivers/tty/serial/8250/8250_platform.c:111:40: error: excess elements in struct initializer [-Werror]
>   111 |         struct uart_8250_port uart = { 0 };
> 
> Use the modern empty {} initializer instead that works on all
> supported compilers.
> 
> Fixes: d9e5a0ce2f16 ("serial: 8250_platform: Enable generic 16550A platform devices")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/tty/serial/8250/8250_platform.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_platform.c b/drivers/tty/serial/8250/8250_platform.c
> index c9ef988d58b3..2a3765334843 100644
> --- a/drivers/tty/serial/8250/8250_platform.c
> +++ b/drivers/tty/serial/8250/8250_platform.c
> @@ -108,7 +108,7 @@ void __init serial8250_isa_init_ports(void)
>  static int serial8250_platform_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> -	struct uart_8250_port uart = { 0 };
> +	struct uart_8250_port uart = { };
Thanks! I was not sure about this. So, I sent a patch to use memset just
couple of hours ago. I sent different fix for other ACPI_PTR issue as
well. But I think your fixes are better.

Reviewed-by: Sunil V L <sunilvl@...tanamicro.com>

Thanks!
Sunil