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From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Wed, 16 Jan 2019 16:58:51 -0500
Message-ID: <CADnq5_PgUBbSEbAsZrhnWQszmdOmHDynUfaQ_pB+f9scuyb-vQ@mail.gmail.com>
Subject: Re: [PATCH] drm: radeon: annotate implicit fall through
To:     Mathieu Malaterre <malat@debian.org>
Cc:     Alex Deucher <alexander.deucher@amd.com>,
        "David (ChunMing) Zhou" <David1.Zhou@amd.com>,
        LKML <linux-kernel@vger.kernel.org>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>,
        David Airlie <airlied@linux.ie>,
        Maling list - DRI developers 
        <dri-devel@lists.freedesktop.org>, Daniel Vetter <daniel@ffwll.ch>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>
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On Mon, Jan 14, 2019 at 3:29 PM Mathieu Malaterre <malat@debian.org> wrote:
>
> There is a plan to build the kernel with -Wimplicit-fallthrough and
> this place in the code produced a warning (W=1).
>
> This commit remove the following warning:
>
>   drivers/gpu/drm/radeon/evergreen_cs.c:1301:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
>
> Signed-off-by: Mathieu Malaterre <malat@debian.org>
> ---
>  drivers/gpu/drm/radeon/evergreen_cs.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c
> index f471537c852f..fbf346185790 100644
> --- a/drivers/gpu/drm/radeon/evergreen_cs.c
> +++ b/drivers/gpu/drm/radeon/evergreen_cs.c
> @@ -1299,6 +1299,7 @@ static int evergreen_cs_handle_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
>                         return -EINVAL;
>                 }
>                 ib[idx] += (u32)((reloc->gpu_offset >> 8) & 0xffffffff);
> +               /* fall through */

I think this should actually be a break here.

Alex

>         case CB_TARGET_MASK:
>                 track->cb_target_mask = radeon_get_ib_value(p, idx);
>                 track->cb_dirty = true;
> --
> 2.19.2
>
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