linux-kernel - Re: [PATCH] platform/x86: hp-bioscfg: Removed needless asm-generic

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Date: Wed, 20 Dec 2023 11:24:49 -0800
From: Nick Desaulniers <ndesaulniers@...gle.com>
To: Tanzir Hasan <tanzirh@...gle.com>
Cc: Jorge Lopez <jorge.lopez2@...com>, Hans de Goede <hdegoede@...hat.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH] platform/x86: hp-bioscfg: Removed needless asm-generic

On Tue, Dec 19, 2023 at 10:10:52PM +0000, Tanzir Hasan wrote:
> asm-generic/posix-types.h is obtained through bioscfg.h so there is no
> need to include it.

I verified that by:
1. building with V=1
2. taking the compiler invocation and adding -H

. drivers/platform/x86/hp/hp-bioscfg/bioscfg.h
.. ./include/linux/wmi.h
... ./include/linux/device.h
.... ./include/linux/dev_printk.h
..... ./include/linux/compiler.h
...... ./arch/x86/include/generated/asm/rwonce.h
....... ./include/asm-generic/rwonce.h
........ ./include/linux/kasan-checks.h
......... ./include/linux/types.h
.......... ./include/uapi/linux/types.h
........... ./arch/x86/include/generated/uapi/asm/types.h
............ ./arch/x86/include/asm/posix_types.h
............. ./arch/x86/include/uapi/asm/posix_types_64.h
.............. ./include/uapi/asm-generic/posix_types.h

> It is also an asm-generic file which should be
> avoided if possible.

Correct, though there is a linux/posix_types.h file.

biocfg.h hasn't seen any changes since introduction; perhaps some reference was
removed in follow up changes to passwdobj-attributes.c, but nothing stood out.

Regardless, this file builds just fine without either (asm/posix_types.h or
linux/posix_types.h), and asm-generic should not be used (as suggested by Al).

Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
Tested-by: Nick Desaulniers <ndesaulniers@...gle.com>

> 
> Suggest-by: Al Viro <viro@...iv.linux.org.uk>
> Signed-off-by: Tanzir Hasan <tanzirh@...gle.com>
> ---
>  drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> index 03d0188804ba..f7efe217a4bb 100644
> --- a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> +++ b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> @@ -7,7 +7,6 @@
>   */
>  
>  #include "bioscfg.h"
> -#include <asm-generic/posix_types.h>
>  
>  GET_INSTANCE_ID(password);
>  /*
> 
> ---
> base-commit: 3fb7c66ac51a87984e043d9f47b7a509e3f53906
> change-id: 20231219-hp-password-19068dc438b5
> 
> Best regards,
> -- 
> Tanzir Hasan <tanzirh@...gle.com>
>