linux-kernel - Re: SYSFS "errors"

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Message-ID: <20130218194031.GD16622@pd.tnic>
Date:	Mon, 18 Feb 2013 20:40:32 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: SYSFS "errors"

On Mon, Feb 18, 2013 at 08:47:35PM +0200, Felipe Balbi wrote:
> On Mon, Feb 18, 2013 at 06:45:27PM +0100, Borislav Petkov wrote:
> > On Mon, Feb 18, 2013 at 07:27:00PM +0200, Felipe Balbi wrote:
> > > No such device - /sys/devices/system/edac/mc/mc0/sdram_scrub_rate
> > 
> > Looks like your edac module doesn't allow scrub rate setting. Which edac
> > driver is that? dmesg?
> 
> $ lsmod | grep -i edac
> i7core_edac            22414  0 
> edac_core              43453  2 i7core_edac

Ok, that would be those i7s which reportedly do
not support reading/setting the scrub rate, see
27100db0e0d381d24b6f3cb1a4f439996e7c00c8, for example.

So this is as expected.

Maybe it would be more correct if the core would return "N/A" or
"unsupported" or something to that effect in such cases, to conform with
the readable flag of the sysfs file.

Hmm.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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