linux-kernel - Lots of "EDD information not available" messages

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Message-ID: <21080.3305.184337.222292@hertz.ikp.physik.tu-darmstadt.de>
Date:	Fri, 11 Oct 2013 16:36:25 +0200
From:	bon@...ktron.ikp.physik.tu-darmstadt.de
To:	linux-kernel@...r.kernel.org
Subject: Lots of "EDD information not available" messages

Hello,

running X86-64 on Intel motherboard DL87-RH with Opensuse-12.3 results in
lots of messages like

kernel: [  459.263752] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
kernel: [  459.263753] EDD information not available.
...

until I rename edd.ko. This happens still with "kernel of the day"
3.12.0-rc3-6.g9f1b1d6-desktop.

dmidecode list EDD:

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
...
                EDD is supported
...

so I guess this is the reason why probably sysfs tries to load
edd.ko. However 

edd_init(void)

sees ZERO devices and so denies to load.

        if (!edd_num_devices()) {
                printk(KERN_INFO "EDD information not available.\n");
                return -ENODEV;
        }

Probably the next action on sysfs tries to load edd.ko again. It this a
resonable explanation? What to do against it?

Thanks 

-- 
Uwe Bonnes                bon@...ktron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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