linux-kernel - Re: [PATCH 4/9] Add yaffs ecc, mtd access and nand abstraction code

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Date:	Wed, 03 Nov 2010 10:05:13 -0700
From:	David Daney <ddaney@...iumnetworks.com>
To:	cdhmanning@...il.com
CC:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 4/9] Add yaffs ecc, mtd access and nand abstraction code

On 11/03/2010 09:53 AM, cdhmanning@...il.com wrote:
> From: Charles Manning<cdhmanning@...il.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
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