linux-kernel - regression: a0d4922 causes PCI host constroller problems

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Date:	Fri, 16 Jan 2009 09:05:25 +0100
From:	Simon Holm Thøgersen <odie@...aau.dk>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: regression: a0d4922 causes PCI host constroller problems

commit a0d4922 ("USB: fix up suspend and resume for PCI host
controllers") causes a lot of these two lines to be logged:

uhci_hcd 0000:00:1d.2: host system error, PCI problems?
uhci_hcd 0000:00:1d.2: host controller process error, something bad
happened!

Normally they appear on resume after suspend to disk, but sometimes I'm
not even sure I had to suspend to disk to see them. Also, it seems like
they don't trigger if X has not been started, or at least they are much
less likely to.

Reverting the patch restores normal operation.

No USB devices were attached BTW.

Simon Holm Thøgersen

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