linux-kernel - Re: converting appletouch to usb autosuspend again...

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Date:	Sun, 24 Aug 2008 20:39:48 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Soeren Sonnenburg <kernel@....de>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Jiri Kosina <jikos@...os.cz>
Subject: Re: converting appletouch to usb autosuspend again...

Am Samstag 23 August 2008 23:00:18 schrieb Soeren Sonnenburg:
> Dear all,
> 
> I wonder whether anyone else tried to get appletouch usb autosuspend to
> work. I've seen Oliver's patch but as it kept oopsing on me and I

You might post the oops. I haven't seen it.

> couldn't parse the usb_mark_last_busy logic I came up with the attached
> patch against (current git; at least didn't oops for me over the last
> several days and suspend/resume cycles).
> 
> However things I don't understand, 
> 
> a) is autosuspend on the appletouch driver used at all (how can I find
> out)

Compile your kernel with CONFIG_USB_DEBUG and autosuspend will be logged.
You need to activate autosuspend via sysfs.

> b) do I need dev->intf->needs_remote_wakeup = 1; ?

Yes.

> c) is line 33 in the patch safe to do ?

Why do you want to add it?

> And while we are at it I am still seeing these X falls back to hid mouse
> mode, only switching to console and back resolves this (looks like this
> only worked in previous kernels as resume from s2ram took a lot longer
> due to the IDE driver doing a couple of resets) - is there anything one
> could do about it?

Post a log.

	Regards
		Oliver

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