linux-hardening - Re: [PATCH][next] drm/amd/pm: Fix fall-through warning for Clang

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Message-ID: <CADnq5_OSFqq9KxZ17B7abeUfdUOR1ix4OFHjxkgzWdm7FzPfgA@mail.gmail.com>
Date:   Fri, 4 Jun 2021 12:56:03 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Kees Cook <keescook@...omium.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] drm/amd/pm: Fix fall-through warning for Clang

Applied.  Thanks!

Alex

On Fri, Jun 4, 2021 at 1:05 AM Gustavo A. R. Silva
<gustavoars@...nel.org> wrote:
>
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> by explicitly adding a break statement instead of letting the code fall
> through to the next case.
>
> Link: https://github.com/KSPP/linux/issues/115
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
> JFYI: We had thousands of these sorts of warnings and now we are down
>       to just 22 in linux-next. This is one of those last remaining
>       warnings. :)
>
>  drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> index 8f71f6a4bb49..43c3f6e755e7 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> @@ -831,6 +831,7 @@ static int smu10_dpm_force_dpm_level(struct pp_hwmgr *hwmgr,
>                 break;
>         case AMD_DPM_FORCED_LEVEL_MANUAL:
>                 data->fine_grain_enabled = 1;
> +               break;
>         case AMD_DPM_FORCED_LEVEL_PROFILE_EXIT:
>         default:
>                 break;
> --
> 2.27.0
>