linux-kernel - Re: [PATCH] staging: sm750fb: fix checkpatch warning architecture specific defines should be avoided

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Message-ID: <8ec292d5-86b8-4670-8990-91deb627ee0b@suse.de>
Date: Wed, 12 Feb 2025 09:00:46 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Michael Anckaert <michael.anckaert@...il.com>,
 Sudip Mukherjee <sudipm.mukherjee@...il.com>,
 Teddy Wang <teddy.wang@...iconmotion.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "open list:STAGING - SILICON MOTION SM750 FRAME BUFFER DRIVER"
 <linux-fbdev@...r.kernel.org>,
 "open list:STAGING SUBSYSTEM" <linux-staging@...ts.linux.dev>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: sm750fb: fix checkpatch warning architecture
 specific defines should be avoided

Hi

Am 12.02.25 um 08:43 schrieb Michael Anckaert:
> Replace architecture-specific defines with CONFIG_X86 checks to improve
> portability and adhere to kernel coding standards.
>
> Fixes checkpatch warning:
> - CHECK: architecture specific defines should be avoided.
>
> Changes made:
> - Using CONFIG_X86 instead of i386 and x86.
>
> Signed-off-by: Michael Anckaert <michael.anckaert@...il.com>
> ---
>   drivers/staging/sm750fb/ddk750_chip.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/sm750fb/ddk750_chip.c b/drivers/staging/sm750fb/ddk750_chip.c
> index 02860d3ec365..67a2f60440ca 100644
> --- a/drivers/staging/sm750fb/ddk750_chip.c
> +++ b/drivers/staging/sm750fb/ddk750_chip.c
> @@ -229,7 +229,7 @@ int ddk750_init_hw(struct initchip_param *p_init_param)
>   		reg |= (VGA_CONFIGURATION_PLL | VGA_CONFIGURATION_MODE);
>   		poke32(VGA_CONFIGURATION, reg);
>   	} else {
> -#if defined(__i386__) || defined(__x86_64__)
> +#ifdef CONFIG_X86
>   		/* set graphic mode via IO method */
>   		outb_p(0x88, 0x3d4);
>   		outb_p(0x06, 0x3d5);

Maybe move the '} else {' into the ifdef to avoid the possibly empty 
else branch. I also wonder why this is only being done on x86. There are 
other systems with VGA.

In any case

Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>

Best regards
Thomas


-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)