linux-kernel - Re: [01/12] efi: Do not include <linux/screen

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Date:   Wed, 5 Jul 2023 10:00:06 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Sui Jingfeng <suijingfeng@...ngson.cn>, arnd@...db.de,
        deller@....de, daniel@...ll.ch, airlied@...il.com
Cc:     linux-hyperv@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-sh@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-mips@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-riscv@...ts.infradead.org, Will Deacon <will@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>, linux-arch@...r.kernel.org,
        linux-hexagon@...r.kernel.org, linux-staging@...ts.linux.dev,
        Russell King <linux@...linux.org.uk>,
        linux-csky@...r.kernel.org, loongarch@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-alpha@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [01/12] efi: Do not include <linux/screen_info.h> from EFI header

Hi

Am 05.07.23 um 03:40 schrieb Sui Jingfeng:
> Hi, Thomas
> 
> 
> I love your patch, LoongArch also have UEFI GOP support,
> 
> Maybe the arch/loongarch/kernel/efi.c don't include the '#include 
> <linux/screen_info.h>' explicitly.

Oh, thank you for testing. I try to build arch/ changes on all of the 
affected platforms, but I cannot build for all of them. I have no means 
of building for loongarch ATM.

I'll update the patch according to your feedback.

Best regards
Thomas

> 
> 
> ```
> 
> diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c
> index 3d448fef3af4..04f4d217aefb 100644
> --- a/arch/loongarch/kernel/efi.c
> +++ b/arch/loongarch/kernel/efi.c
> @@ -19,6 +19,7 @@
>   #include <linux/memblock.h>
>   #include <linux/reboot.h>
>   #include <linux/uaccess.h>
> +#include <linux/screen_info.h>
> 
>   #include <asm/early_ioremap.h>
>   #include <asm/efi.h>
> ```
> 
> 
> On 2023/6/29 19:45, Thomas Zimmermann wrote:
>> The header file <linux/efi.h> does not need anything from
>> <linux/screen_info.h>. Declare struct screen_info and remove
>> the include statements. Update a number of source files that
>> require struct screen_info's definition.
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
>> Cc: Ard Biesheuvel <ardb@...nel.org>
>> Cc: Russell King <linux@...linux.org.uk>
>> Cc: Catalin Marinas <catalin.marinas@....com>
>> Cc: Will Deacon <will@...nel.org>
>> Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
> 
> With the above issue solved, please take my R-B if you would like.
> 
> 
> Reviewed-by: Sui Jingfeng <suijingfeng@...ngson.cn>
> 
>> ---
>>   arch/arm/kernel/efi.c                         | 2 ++
>>   arch/arm64/kernel/efi.c                       | 1 +
>>   drivers/firmware/efi/libstub/efi-stub-entry.c | 2 ++
>>   drivers/firmware/efi/libstub/screen_info.c    | 2 ++
>>   include/linux/efi.h                           | 3 ++-
>>   5 files changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c
>> index e2b9d2618c672..e94655ef16bb3 100644
>> --- a/arch/arm/kernel/efi.c
>> +++ b/arch/arm/kernel/efi.c
>> @@ -5,6 +5,8 @@
>>   #include <linux/efi.h>
>>   #include <linux/memblock.h>
>> +#include <linux/screen_info.h>
>> +
>>   #include <asm/efi.h>
>>   #include <asm/mach/map.h>
>>   #include <asm/mmu_context.h>
>> diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
>> index baab8dd3ead3c..3afbe503b066f 100644
>> --- a/arch/arm64/kernel/efi.c
>> +++ b/arch/arm64/kernel/efi.c
>> @@ -9,6 +9,7 @@
>>   #include <linux/efi.h>
>>   #include <linux/init.h>
>> +#include <linux/screen_info.h>
>>   #include <asm/efi.h>
>>   #include <asm/stacktrace.h>
>> diff --git a/drivers/firmware/efi/libstub/efi-stub-entry.c 
>> b/drivers/firmware/efi/libstub/efi-stub-entry.c
>> index cc4dcaea67fa6..2f1902e5d4075 100644
>> --- a/drivers/firmware/efi/libstub/efi-stub-entry.c
>> +++ b/drivers/firmware/efi/libstub/efi-stub-entry.c
>> @@ -1,6 +1,8 @@
>>   // SPDX-License-Identifier: GPL-2.0-only
>>   #include <linux/efi.h>
>> +#include <linux/screen_info.h>
>> +
>>   #include <asm/efi.h>
>>   #include "efistub.h"
>> diff --git a/drivers/firmware/efi/libstub/screen_info.c 
>> b/drivers/firmware/efi/libstub/screen_info.c
>> index 4be1c4d1f922b..a51ec201ca3cb 100644
>> --- a/drivers/firmware/efi/libstub/screen_info.c
>> +++ b/drivers/firmware/efi/libstub/screen_info.c
>> @@ -1,6 +1,8 @@
>>   // SPDX-License-Identifier: GPL-2.0
>>   #include <linux/efi.h>
>> +#include <linux/screen_info.h>
>> +
>>   #include <asm/efi.h>
>>   #include "efistub.h"
>> diff --git a/include/linux/efi.h b/include/linux/efi.h
>> index 571d1a6e1b744..360895a5572c0 100644
>> --- a/include/linux/efi.h
>> +++ b/include/linux/efi.h
>> @@ -24,10 +24,11 @@
>>   #include <linux/range.h>
>>   #include <linux/reboot.h>
>>   #include <linux/uuid.h>
>> -#include <linux/screen_info.h>
>>   #include <asm/page.h>
>> +struct screen_info;
>> +
>>   #define EFI_SUCCESS        0
>>   #define EFI_LOAD_ERROR        ( 1 | (1UL << (BITS_PER_LONG-1)))
>>   #define EFI_INVALID_PARAMETER    ( 2 | (1UL << (BITS_PER_LONG-1)))
> 

-- 
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)

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