linux-kernel - Re: USB serial regression 2.6.31.1 -> 2.6.31.2

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Date:	Sat, 10 Oct 2009 11:55:47 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Josua Dietze <digidietze@...isberghof.de>,
	Greg KH <greg@...ah.com>,
	Alan Stern <stern@...land.harvard.edu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	Hugh Blemings <hugh@...mings.org>
Subject: Re: USB serial regression 2.6.31.1 -> 2.6.31.2

Am Samstag, 10. Oktober 2009 09:41:01 schrieb Benjamin Herrenschmidt:
> suspend is a good candidate yeah, autosuspend might be causing something
> like that, I'll see what I can find. I didn't spot an obvious change to
> the USB suspend policy between those two kernels, but it could be
> trigged by one of the numerous changes that went into usb-serial.

Then you can simply test this hunch by switching it off. If that helps
please recompile with CONFIG_USB_DEBUG enabled?

But I don't understand why the stable series is affected. Autosuspend
patches didn't go into it, did they Greg?

	Regards
		Oliver

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