Re: [PATCH 18/22] tty: mips_ejtag_fdc: Mark expected switch fall-through

[Jiri Slaby]

On 06. 03. 20, 13:47, Sergey.Semin@xxxxxxxxxxxxxxxxxxxx wrote:
> From: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
> 
> Mark mips_ejtag_fdc_encode() methods switch-case-4 as expecting to
> fall through.
> 
> This patch fixes the following warning:
> 
> drivers/tty/mips_ejtag_fdc.c: In function âmips_ejtag_fdc_encodeâ:
> drivers/tty/mips_ejtag_fdc.c:245:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    word.word &= 0x00ffffff;
>    ~~~~~~~~~~^~~~~~~~~~~~~
> drivers/tty/mips_ejtag_fdc.c:246:2: note: here
>   case 3:
>   ^~~~
> 
> Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx>
> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Cc: Paul Burton <paulburton@xxxxxxxxxx>
> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> ---
>  drivers/tty/mips_ejtag_fdc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/tty/mips_ejtag_fdc.c b/drivers/tty/mips_ejtag_fdc.c
> index 620d8488b83e..21e76a2ec182 100644
> --- a/drivers/tty/mips_ejtag_fdc.c
> +++ b/drivers/tty/mips_ejtag_fdc.c
> @@ -243,6 +243,7 @@ static struct fdc_word mips_ejtag_fdc_encode(const char **ptrs,
>  		/* Fall back to a 3 byte encoding */
>  		word.bytes = 3;
>  		word.word &= 0x00ffffff;
> +		/* Fall through */

We now have "fallthrough;", so I believe you should use that instead of
comments.

thanks,
-- 
js
suse labs