On Fri, Aug 02, 2019 at 02:15:42PM -0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warning (Building: omap1_defconfig arm):
> 
> drivers/video/fbdev/omap/omapfb_main.c:449:23: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1549:6: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1547:3: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1545:3: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1543:3: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1540:6: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1538:3: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> drivers/video/fbdev/omap/omapfb_main.c:1535:3: warning: this statement may 
> fall through [-Wimplicit-fallthrough=]
> 
> Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>

Reviewed-by: Kees Cook <keesc...@chromium.org>

-Kees

> ---
>  drivers/video/fbdev/omap/omapfb_main.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/video/fbdev/omap/omapfb_main.c 
> b/drivers/video/fbdev/omap/omapfb_main.c
> index 90eca64e3144..702cca59bda1 100644
> --- a/drivers/video/fbdev/omap/omapfb_main.c
> +++ b/drivers/video/fbdev/omap/omapfb_main.c
> @@ -447,6 +447,7 @@ static int set_color_mode(struct omapfb_plane_struct 
> *plane,
>               return 0;
>       case 12:
>               var->bits_per_pixel = 16;
> +             /* fall through */
>       case 16:
>               if (plane->fbdev->panel->bpp == 12)
>                       plane->color_mode = OMAPFB_COLOR_RGB444;
> @@ -1534,20 +1535,27 @@ static void omapfb_free_resources(struct 
> omapfb_device *fbdev, int state)
>       case OMAPFB_ACTIVE:
>               for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
>                       unregister_framebuffer(fbdev->fb_info[i]);
> +             /* fall through */
>       case 7:
>               omapfb_unregister_sysfs(fbdev);
> +             /* fall through */
>       case 6:
>               if (fbdev->panel->disable)
>                       fbdev->panel->disable(fbdev->panel);
> +             /* fall through */
>       case 5:
>               omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
> +             /* fall through */
>       case 4:
>               planes_cleanup(fbdev);
> +             /* fall through */
>       case 3:
>               ctrl_cleanup(fbdev);
> +             /* fall through */
>       case 2:
>               if (fbdev->panel->cleanup)
>                       fbdev->panel->cleanup(fbdev->panel);
> +             /* fall through */
>       case 1:
>               dev_set_drvdata(fbdev->dev, NULL);
>               kfree(fbdev);
> -- 
> 2.22.0
> 

-- 
Kees Cook
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