linux-kernel - Re: 2,6.26-rc4-git2 - long pause during boot

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Message-ID: <Pine.LNX.4.44L0.0806091040440.2943-100000@iolanthe.rowland.org>
Date:	Mon, 9 Jun 2008 10:46:44 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Chris Clayton <chris2553@...glemail.com>
cc:	James Bottomley <James.Bottomley@...senpartnership.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	SCSI development list <linux-scsi@...r.kernel.org>,
	Hannes Reinecke <hare@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	USB list <linux-usb@...r.kernel.org>,
	<linux1394-devel@...ts.sourceforge.net>
Subject: Re: 2,6.26-rc4-git2 - long pause during boot

On Sun, 8 Jun 2008, Chris Clayton wrote:

> > The odd thing is that it occurs in the middle of USB initialisation from
> >
> 
> Because of this oddity, I've also built 2.6.26-rc5-git2 with verbose USB 
> debugging on. A boot log from that kernel is attached. You will see lots of 
> ETIME errors from usb. A log from a similarly verbose 2.6.25.5 kernel does not 
> show these errors. usb-devel added to cc list.

In fact the log shows that the 30-second delay occurs in the middle of
ohci1394 (Firewire) initialization, not USB initialization:

Jun  8 05:26:35 upstairs kernel: ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[22]  MMIO=[fbfff000-fbfff7ff]  Max Packet=[2048]  IR/IT contexts=[4/8] 
Jun  8 05:26:35 upstairs kernel: ohci_hcd 0000:02:0a.0: urb f71cb680 path 2 ep1in 5e160000 cc 5 --> status -62 
Jun  8 05:26:35 upstairs kernel: hub 1-2:1.0: transfer --> -62 
Jun  8 05:27:08 upstairs kernel: driver: '0000:02:0b.0': driver_bound: bound to device 'ohci1394' 
Jun  8 05:27:08 upstairs kernel: bus: 'pci': really_probe: bound device 0000:02:0b.0 to driver ohci1394 

Those -62 errors from ohci_hcd are red herrings.  To test this, try 
booting with "nousb".

Alan Stern

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