linux-kernel - Re: [PATCH v2] media: s5p-jpeg: rename JPEG marker constants to prevent build warnings

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Message-ID: <6c69dd69-9ace-114a-f887-3fe0fdd5d500@gmail.com>
Date:   Tue, 7 Sep 2021 09:27:04 +0200
From:   Andrzej Pietrasiewicz <andrzejtp2010@...il.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        linux-media@...r.kernel.org,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] media: s5p-jpeg: rename JPEG marker constants to
 prevent build warnings

Hi Mauro,

W dniu 07.09.2021 o 08:11, Mauro Carvalho Chehab pisze:
> Em Mon,  6 Sep 2021 21:40:22 -0700
> Randy Dunlap <rdunlap@...radead.org> escreveu:
> 
>> The use of a macro named 'RST' conflicts with one of the same name
>> in arch/mips/include/asm/mach-rc32434/rb.h. This causes build
>> warnings on some MIPS builds.
>>
>> Change the names of the JPEG marker constants to be in their own
>> namespace to fix these build warnings and to prevent other similar
>> problems in the future.
>>
>> Fixes these build warnings:
>>
>> In file included from ../drivers/media/platform/s5p-jpeg/jpeg-hw-exynos3250.c:14:
>> ../drivers/media/platform/s5p-jpeg/jpeg-core.h:43: warning: "RST" redefined
>>     43 | #define RST                             0xd0
>>        |
>> ../arch/mips/include/asm/mach-rc32434/rb.h:13: note: this is the location of the previous definition
>>     13 | #define RST             (1 << 15)
>>
>> In file included from ../drivers/media/platform/s5p-jpeg/jpeg-hw-s5p.c:13:
>> ../drivers/media/platform/s5p-jpeg/jpeg-core.h:43: warning: "RST" redefined
>>     43 | #define RST                             0xd0
>> ../arch/mips/include/asm/mach-rc32434/rb.h:13: note: this is the location of the previous definition
>>     13 | #define RST             (1 << 15)
>>
>> In file included from ../drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c:12:
>> ../drivers/media/platform/s5p-jpeg/jpeg-core.h:43: warning: "RST" redefined
>>     43 | #define RST                             0xd0
>> ../arch/mips/include/asm/mach-rc32434/rb.h:13: note: this is the location of the previous definition
>>     13 | #define RST             (1 << 15)
>>
>> In file included from ../drivers/media/platform/s5p-jpeg/jpeg-core.c:31:
>> ../drivers/media/platform/s5p-jpeg/jpeg-core.h:43: warning: "RST" redefined
>>     43 | #define RST                             0xd0
>> ../arch/mips/include/asm/mach-rc32434/rb.h:13: note: this is the location of the previous definition
>>     13 | #define RST             (1 << 15)
>>
>> Also update the kernel-doc so that the word "marker" is not
>> repeated.
>>
>> Fixes: bb677f3ac434 ("[media] Exynos4 JPEG codec v4l2 driver")
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>> Reported-by: kernel test robot <lkp@...el.com>
>> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
>> Cc: linux-media@...r.kernel.org
>> Cc: Andrzej Pietrasiewicz <andrzejtp2010@...il.com>
>> Cc: Jacek Anaszewski <jacek.anaszewski@...il.com>
>> Cc: Sylwester Nawrocki <s.nawrocki@...sung.com>
>> Cc: linux-arm-kernel@...ts.infradead.org
>> ---
>> v2: change all JPEG marker macros to be in their own namespace (as
>>      suggested by Mauro)
> 
> Applied, thanks!

You can add

Acked-by: Andrzej Pietrasiewicz <andrzejtp2010@...il.com>

> 
> Regards,
> Mauro
> 
> Thanks,
> Mauro
>