linux-kernel - Re: [PATCH 12/21] amd64_edac: add f10-and-later methods-p2

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Date:	Mon, 04 May 2009 20:25:43 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	Borislav Petkov <borislav.petkov@....com>
CC:	akpm@...ux-foundation.org, greg@...ah.com, mingo@...e.hu,
	tglx@...utronix.de, hpa@...or.com, dougthompson@...ssion.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/21] amd64_edac: add f10-and-later methods-p2

Borislav Petkov escreveu:
> +/*
> + * f10_lookup_addr_in_dct
> + *
> + *	Iterate over the DRAM DCT "base" and "mask" register looking for
> + *	a SystemAddr match on the specified 'ChannelSelect' and 'NodeID'
> + *
> + * Return:
> + *	-1  NOT FOUND
> + *	0..csrow = Chip-Select Row
> + */
> +static int f10_lookup_addr_in_dct(u32 InputAddr, u32 NodeID, u32 ChannelSelect)
> +{
> +	struct mem_ctl_info *mci;
> +	struct amd64_pvt *pvt;
> +	u32 CSBase, CSMask;
> +	int CSFound = -1;
> +	int csrow;
> +
> +	mci = mci_lookup[NodeID];
> +	if (!mci)
> +		return CSFound;
>   

It is better to use a standard error code like -EINVAL instead of using 
-1 for error.


Cheers,
Mauro.
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