Re: [PATCH] fbdev: sh7760fb: document fallthrough cases

[Geert Uytterhoeven]

On Mon, Nov 15, 2021 at 7:33 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
> Fix fallthrough warnings in sh776fb.c:
>
> ../drivers/video/fbdev/sh7760fb.c: In function 'sh7760fb_get_color_info':
> ../drivers/video/fbdev/sh7760fb.c:138:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
>   138 |                 lgray = 1;
> ../drivers/video/fbdev/sh7760fb.c:143:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
>   143 |                 lgray = 1;
>
> Just document the current state of code execution/flow.
>
> Fixes: 4a25e41831ee ("video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver")
> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Section 30.4.4 ("Data Format") of the SH7760 Group Hardware
Manual confirms fall-through is appropriate here (especially for
the odd 6 bpp mode).

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds