From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-kernel@vger.kernel.org,
Denys Vlasenko <vda.linux@googlemail.com>
Subject: Re: [PATCHv2] fat: don't use custom hex_to_bin()
Date: Wed, 28 Sep 2011 08:15:55 +0900 [thread overview]
Message-ID: <87bou5inkk.fsf@devron.myhome.or.jp> (raw)
In-Reply-To: <CAHp75Vcdnx28i0s4sKUf+MCruMNq-zdX55f45TcTR7AcO4foSw@mail.gmail.com> (Andy Shevchenko's message of "Tue, 27 Sep 2011 21:06:12 +0300")
Andy Shevchenko <andy.shevchenko@gmail.com> writes:
> Actually here we will change endianess.
> So, my question is what endianess is right here? If the original code
> okay, then patch should be rewritten like this:
>
> rc = hex2bin(op++, ip + 3, 1);
> if (rc < 0)
> return -EINVAL;
>
> rc = hex2bin(op++, ip + 1, 1);
> if (rc < 0)
> return -EINVAL;
Original code may work only for little endian. Well, anyway, the output
should be wchar_t (u16) of native endian.
So, I think it should be something like
u8 uc[2];
if (hex2bin(uc, ip + 1, 2) < 0)
return -EINVAL;
*(wchar_t *)op = uc[0] << 8 | uc[1];
This should be readable more.
Thanks.
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
next prev parent reply other threads:[~2011-09-27 23:16 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-23 11:32 [PATCH] alsa: 6fire: don't use custom hex_to_bin() Andy Shevchenko
2011-09-23 11:32 ` [PATCH] fat: " Andy Shevchenko
2011-09-23 12:05 ` Denys Vlasenko
2011-09-23 12:11 ` Andy Shevchenko
2011-09-27 11:48 ` [PATCHv2] " Andy Shevchenko
2011-09-27 17:19 ` OGAWA Hirofumi
2011-09-27 17:52 ` Andy Shevchenko
2011-09-27 18:06 ` Andy Shevchenko
2011-09-27 23:15 ` OGAWA Hirofumi [this message]
2011-09-29 13:07 ` Andy Shevchenko
2011-09-29 14:43 ` OGAWA Hirofumi
2011-09-29 14:54 ` Andy Shevchenko
2011-09-29 15:19 ` OGAWA Hirofumi
2011-09-29 15:10 ` [PATCHv4] " Andy Shevchenko
2011-09-29 15:37 ` Joe Perches
2011-09-29 18:27 ` OGAWA Hirofumi
2011-09-29 18:41 ` Joe Perches
2011-09-29 19:35 ` OGAWA Hirofumi
2011-09-29 13:15 ` [PATCHv3] " Andy Shevchenko
2011-09-29 14:51 ` OGAWA Hirofumi
2011-09-23 13:22 ` [PATCH] alsa: 6fire: " Takashi Iwai
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