linux-hardening - Re: [PATCH RESEND][next] drm/nouveau: Fix fall-through warnings for Clang

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Date:   Tue, 20 Apr 2021 15:13:50 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH RESEND][next] drm/nouveau: Fix fall-through warnings for
 Clang

Hi all,

Friendly ping: who can take this, please?

Thanks
--
Gustavo

On 3/5/21 03:56, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
> of warnings by explicitly adding a couple of break statements 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>
> ---
>  drivers/gpu/drm/nouveau/nouveau_bo.c        | 1 +
>  drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 2375711877cf..62903c3b368d 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -443,6 +443,7 @@ nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t domain, bool contig)
>  			break;
>  		case TTM_PL_TT:
>  			error |= !(domain & NOUVEAU_GEM_DOMAIN_GART);
> +			break;
>  		default:
>  			break;
>  		}
> diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
> index 61e6d7412505..eb844cdcaec2 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> @@ -157,6 +157,7 @@ nouveau_conn_atomic_set_property(struct drm_connector *connector,
>  			default:
>  				break;
>  			}
> +			break;
>  		case DRM_MODE_SCALE_FULLSCREEN:
>  		case DRM_MODE_SCALE_CENTER:
>  		case DRM_MODE_SCALE_ASPECT:
>