From: David Daney <ddaney@caviumnetworks.com>
To: cdhmanning@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 4/9] Add yaffs ecc, mtd access and nand abstraction code
Date: Wed, 03 Nov 2010 10:05:13 -0700 [thread overview]
Message-ID: <4CD19649.9060300@caviumnetworks.com> (raw)
In-Reply-To: <1288803204-3849-5-git-send-email-cdhmanning@gmail.com>
On 11/03/2010 09:53 AM, cdhmanning@gmail.com wrote:
> From: Charles Manning<cdhmanning@gmail.com>
[...]
> --- /dev/null
> +++ b/fs/yaffs2/yaffs_ecc.c
[...]
> +
> +/* Count the bits in an unsigned char or a U32 */
> +
> +static int yaffs_count_bits(unsigned char x)
> +{
> + int r = 0;
> + while (x) {
> + if (x& 1)
> + r++;
> + x>>= 1;
> + }
> + return r;
> +}
> +
> +static int yaffs_count_bits32(unsigned x)
> +{
> + int r = 0;
> + while (x) {
> + if (x& 1)
> + r++;
> + x>>= 1;
> + }
> + return r;
> +}
> +
These two can probably be replaced with the standard hweight32() and
hweight8().
David Daney
next prev parent reply other threads:[~2010-11-03 17:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-03 16:53 [PATCH 0/9] Add yaffs2 file system cdhmanning
2010-11-03 16:53 ` [PATCH 1/9] Add yaffs Kconfig and Makefile cdhmanning
2010-11-03 17:46 ` Greg KH
2010-11-03 17:55 ` David Daney
2010-11-03 18:06 ` Greg KH
2010-11-04 20:58 ` Charles Manning
2010-11-04 22:36 ` Greg KH
2010-11-05 0:14 ` Ryan Mallon
2010-11-06 1:50 ` Valdis.Kletnieks
2010-11-07 20:59 ` Charles Manning
2010-11-07 21:45 ` Chris Snook
2010-11-07 22:22 ` Charles Manning
2010-11-08 10:24 ` Chris Snook
2010-11-08 21:22 ` Charles Manning
2010-11-08 22:15 ` Chris Snook
2010-11-03 16:53 ` [PATCH 2/9] Add yaffs allocator, bitmap and attrib source cdhmanning
2010-11-04 23:01 ` Jesper Juhl
2010-11-07 22:42 ` Charles Manning
2010-11-03 16:53 ` [PATCH 3/9] Add yaffs checkpointing, blockinfo, nameval and os context cdhmanning
2010-11-03 16:53 ` [PATCH 4/9] Add yaffs ecc, mtd access and nand abstraction code cdhmanning
2010-11-03 17:05 ` David Daney [this message]
2010-11-03 16:53 ` [PATCH 5/9] Add yaffs_guts.c cdhmanning
2010-11-03 16:53 ` [PATCH 6/9] Add some yaffs include files cdhmanning
2010-11-03 17:10 ` David Daney
2010-11-03 17:16 ` Charles Manning
2010-11-09 17:12 ` Arnd Bergmann
2010-11-03 16:53 ` [PATCH 7/9] Add yaffs tag access code cdhmanning
2010-11-03 17:16 ` David Daney
2010-11-03 17:17 ` Paulo Marques
2010-11-03 16:53 ` [PATCH 8/9] Add yaffs verification and version specific code cdhmanning
2010-11-03 16:53 ` [PATCH 9/9] Add yaffs kernel glue cdhmanning
2010-11-09 16:57 ` Arnd Bergmann
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