linux-kernel - Re: [PATCH] drm/msm: Annotate intentional switch statement fall throughs

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Date:   Thu, 25 Jul 2019 10:50:51 -0700
From:   Rob Clark <robdclark@...il.com>
To:     Jordan Crouse <jcrouse@...eaurora.org>
Cc:     freedreno <freedreno@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        David Airlie <airlied@...ux.ie>, Sean Paul <sean@...rly.run>,
        Kees Cook <keescook@...omium.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Sharat Masetty <smasetty@...eaurora.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Douglas Anderson <dianders@...omium.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jonathan Marek <jonathan@...ek.ca>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Mamta Shukla <mamtashukla555@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH] drm/msm: Annotate intentional switch statement fall throughs

On Thu, Jul 25, 2019 at 9:53 AM Jordan Crouse <jcrouse@...eaurora.org> wrote:
>
> Explicitly mark intentional fall throughs in switch statements to keep
> -Wimplicit-fallthrough from complaining.
>
> Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>

Reviewed-by: Rob Clark <robdclark@...il.com>

> ---
>
>  drivers/gpu/drm/msm/adreno/a5xx_gpu.c   | 2 ++
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 1 +
>  drivers/gpu/drm/msm/adreno/adreno_gpu.c | 1 +
>  3 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> index 1671db4..e9c55d1 100644
> --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> @@ -59,6 +59,7 @@ static void a5xx_submit_in_rb(struct msm_gpu *gpu, struct msm_gem_submit *submit
>                 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
>                         if (priv->lastctx == ctx)
>                                 break;
> +                       /* fall-thru */
>                 case MSM_SUBMIT_CMD_BUF:
>                         /* copy commands into RB: */
>                         obj = submit->bos[submit->cmd[i].idx].obj;
> @@ -149,6 +150,7 @@ static void a5xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
>                 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
>                         if (priv->lastctx == ctx)
>                                 break;
> +                       /* fall-thru */
>                 case MSM_SUBMIT_CMD_BUF:
>                         OUT_PKT7(ring, CP_INDIRECT_BUFFER_PFE, 3);
>                         OUT_RING(ring, lower_32_bits(submit->cmd[i].iova));
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index be39cf0..dc8ec2c 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -115,6 +115,7 @@ static void a6xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
>                 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
>                         if (priv->lastctx == ctx)
>                                 break;
> +                       /* fall-thru */
>                 case MSM_SUBMIT_CMD_BUF:
>                         OUT_PKT7(ring, CP_INDIRECT_BUFFER_PFE, 3);
>                         OUT_RING(ring, lower_32_bits(submit->cmd[i].iova));
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index 9acbbc0..048c8be 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -428,6 +428,7 @@ void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
>                         /* ignore if there has not been a ctx switch: */
>                         if (priv->lastctx == ctx)
>                                 break;
> +                       /* fall-thru */
>                 case MSM_SUBMIT_CMD_BUF:
>                         OUT_PKT3(ring, adreno_is_a430(adreno_gpu) ?
>                                 CP_INDIRECT_BUFFER_PFE : CP_INDIRECT_BUFFER_PFD, 2);
> --
> 2.7.4
>