linux-kernel - Re: [PATCH] cris: kgdb: use native hex2bin

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Message-ID: <CAMuHMdXBk6vMFNOJVsxYnt8qvuQN2xveXFaSTM8tUTbiEgPArQ@mail.gmail.com>
Date:	Thu, 30 May 2013 09:57:11 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Cris <linux-cris-kernel@...s.com>
Subject: Re: [PATCH] cris: kgdb: use native hex2bin

On Tue, May 28, 2013 at 5:53 PM, Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c
> index 37e6d2c..07bccd8 100644
> --- a/arch/cris/arch-v10/kernel/kgdb.c
> +++ b/arch/cris/arch-v10/kernel/kgdb.c

> @@ -659,18 +651,6 @@ read_register (char regno, unsigned int *valptr)
>  }
>
>  /********************************** Packet I/O ******************************/
> -/* Returns the integer equivalent of a hexadecimal character. */
> -static int
> -hex (char ch)
> -{
> -       if ((ch >= 'a') && (ch <= 'f'))
> -               return (ch - 'a' + 10);
> -       if ((ch >= '0') && (ch <= '9'))
> -               return (ch - '0');
> -       if ((ch >= 'A') && (ch <= 'F'))
> -               return (ch - 'A' + 10);
> -       return (-1);
> -}

This one handles both upper and lower case hex characters, while hex2bin()
handles lower case only. Is that OK, or should hex2bin be extended?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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
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