linux-kernel - Re: 2.6.21-rc6-mm1 USB related boot hang

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Message-ID: <Pine.LNX.4.64.0704121955190.12991@twin.jikos.cz>
Date:	Thu, 12 Apr 2007 20:17:47 +0200 (CEST)
From:	Jiri Kosina <jikos@...os.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Helge Hafting <helgehaf@...el.hist.no>,
	linux-kernel@...r.kernel.org,
	linux-usb-devel@...ts.sourceforge.net,
	Corey Minyard <minyard@....org>, Greg KH <greg@...ah.com>,
	Mike Galbraith <efault@....de>, Adrian Bunk <bunk@...sta.de>
Subject: Re: 2.6.21-rc6-mm1 USB related boot hang

On Thu, 12 Apr 2007, Jiri Kosina wrote:

> CONFIG_IPMI_SI=y
> hangs upon boot on the already mentioned printk from ipmi_si. With
> CONFIG_IPMI_SI=m
> the boot succeeds. When manually trying to modprobe ipmi_si after that, 
> the modprobe itself hangs, but the machine remains usable otherwise.

Actually, after approximately 6 minutes 30 seconds, the modprobe finishes 
with -ENODEV and the following is spitted into dmesg:

ipmi_si: There appears to be no BMC at this location
ACPI: PCI interrupt for device 0000:02:00.4 disabled
ipmi_si: Unable to find any System Interface(s)

Anyway I just checked that I get precisely the same behavior with plain 
2.6.21-rc6, so we can rule out -mm with this issue.

It's possible that this system has some broken KCS. I will try to narrow 
this down.

Anyway, the USB-related hang Helge is seeing is therefore a different 
story.

-- 
Jiri Kosina
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