Re: [PATCH -next] drm/amd/display: Fix old-style declaration

From: Yuehaibing
Date: Tue Nov 12 2019 - 02:51:49 EST


On 2019/11/12 10:39, Joe Perches wrote:
> On Mon, 2019-11-11 at 20:28 +0800, YueHaibing wrote:
>> Fix a build warning:
>>
>> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:75:1:
>> warning: 'static' is not at beginning of declaration [-Wold-style-declaration]
> []
>> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> []
>> @@ -69,7 +69,7 @@
>> #define DC_LOGGER \
>> dc->ctx->logger
>>
>> -const static char DC_BUILD_ID[] = "production-build";
>> +static const char DC_BUILD_ID[] = "production-build";
>
> DC_BUILD_ID is used exactly once.
> Maybe just use it directly and remove DC_BUILD_ID instead?

commit be61df574256ae8c0dbd45ac148ca7260a0483c0
Author: Jun Lei <Jun.Lei@xxxxxxx>
Date: Thu Sep 13 09:32:26 2018 -0400

drm/amd/display: Add DC build_id to determine build type

[why]
Sometimes there are indications that the incorrect driver is being
loaded in automated tests. This change adds the ability for builds to
be tagged with a string, and picked up by the test infrastructure.

[how]
dc.c will allocate const for build id, which is init-ed with default
value, indicating production build. For test builds, build server will
find/replace this value. The test machine will then verify this value.

It seems DC_BUILD_ID is used by the build server, so maybe we should keep it.

>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> index 1fdba13..803dc14 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
> @@ -69,8 +69,6 @@
> #define DC_LOGGER \
> dc->ctx->logger
>
> -const static char DC_BUILD_ID[] = "production-build";
> -
> /**
> * DOC: Overview
> *
> @@ -815,7 +813,7 @@ struct dc *dc_create(const struct dc_init_data *init_params)
> if (dc->res_pool->dmcu != NULL)
> dc->versions.dmcu_version = dc->res_pool->dmcu->dmcu_version;
>
> - dc->build_id = DC_BUILD_ID;
> + dc->build_id = "production-build";
>
> DC_LOG_DC("Display Core initialized\n");
>
>
>
>
> .
>