linux-kernel - Re: [PATCH v2 3/7] tty: serial: samsung: constify s3c24xx_serial_drv

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Date:   Mon, 7 Mar 2022 09:33:19 +0100
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/7] tty: serial: samsung: constify
 s3c24xx_serial_drv_data

On 07. 03. 22, 9:09, Krzysztof Kozlowski wrote:
> The driver data (struct s3c24xx_serial_drv_data) is only used to
> initialize the driver properly and is not modified.  Make it const.
...
> @@ -2755,9 +2755,9 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
>   	},
>   	.fifosize = { 256, 64, 16, 16 },
>   };
> -#define S5PV210_SERIAL_DRV_DATA ((kernel_ulong_t)&s5pv210_serial_drv_data)
> +#define S5PV210_SERIAL_DRV_DATA (&s5pv210_serial_drv_data)
>   #else
> -#define S5PV210_SERIAL_DRV_DATA	(kernel_ulong_t)NULL
> +#define S5PV210_SERIAL_DRV_DATA	NULL

Yet, I still don't see why the switch from ulong->ptr happens in this 
"constify it" patch?

thanks,
-- 
-- 
js
suse labs