linux-kernel - Re: [PATCH] tools/power/cpupower: Fix initializer override in hsw_ext

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Message-ID: <209b17e8-9800-eec9-f781-8becebeddea9@kernel.org>
Date:   Fri, 27 Sep 2019 13:10:58 -0600
From:   shuah <shuah@...nel.org>
To:     Nathan Chancellor <natechancellor@...il.com>,
        Thomas Renninger <trenn@...e.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com, shuah <shuah@...nel.org>
Subject: Re: [PATCH] tools/power/cpupower: Fix initializer override in
 hsw_ext_cstates

On 9/27/19 10:26 AM, Nathan Chancellor wrote:
> When building cpupower with clang, the following warning appears:
> 
>   utils/idle_monitor/hsw_ext_idle.c:42:16: warning: initializer overrides
>   prior initialization of this subobject [-Winitializer-overrides]
>                   .desc                   = N_("Processor Package C2"),
>                                                ^~~~~~~~~~~~~~~~~~~~~~
>   ./utils/helpers/helpers.h:25:33: note: expanded from macro 'N_'
>   #define N_(String) gettext_noop(String)
>                                   ^~~~~~
>   ./utils/helpers/helpers.h:23:30: note: expanded from macro
>   'gettext_noop'
>   #define gettext_noop(String) String
>                                ^~~~~~
>   utils/idle_monitor/hsw_ext_idle.c:41:16: note: previous initialization
>   is here
>                   .desc                   = N_("Processor Package C9"),
>                                                ^~~~~~~~~~~~~~~~~~~~~~
>   ./utils/helpers/helpers.h:25:33: note: expanded from macro 'N_'
>   #define N_(String) gettext_noop(String)
>                                   ^~~~~~
>   ./utils/helpers/helpers.h:23:30: note: expanded from macro
>   'gettext_noop'
>   #define gettext_noop(String) String
>                               ^~~~~~
>   1 warning generated.
> 
> This appears to be a copy and paste or merge mistake because the name
> and id fields both have PC9 in them, not PC2. Remove the second
> assignment to fix the warning.
> 
> Fixes: 7ee767b69b68 ("cpupower: Add Haswell family 0x45 specific idle monitor to show PC8,9,10 states")
> Link: https://github.com/ClangBuiltLinux/linux/issues/718
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
> ---
>   tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c b/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c
> index 7c7451d3f494..58dbdfd4fa13 100644
> --- a/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c
> +++ b/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c
> @@ -39,7 +39,6 @@ static cstate_t hsw_ext_cstates[HSW_EXT_CSTATE_COUNT] = {
>   	{
>   		.name			= "PC9",
>   		.desc			= N_("Processor Package C9"),
> -		.desc			= N_("Processor Package C2"),
>   		.id			= PC9,
>   		.range			= RANGE_PACKAGE,
>   		.get_count_percent	= hsw_ext_get_count_percent,
> 

Looks good to me. I will queue this up for 5.4-rc2 or rc3.

thanks,
-- Shuah