linux-kernel - Re: USB disconnects every 30 seconds (2.6.27-rc8)

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Message-Id: <1223110086.11272.44.camel@violet.holtmann.net>
Date:	Sat, 04 Oct 2008 10:48:06 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Dave Hansen <dave@...1.net>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Thomas Gleixner <tglx@...utronix.de>, gregkh <gregkh@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: USB disconnects every 30 seconds (2.6.27-rc8)

Hi Dave,

> OK, here's output with both Thomas/Hugh's timing fix as well as the USB
> snooping turned on.  The disconnects still happen, but I did get some
> good snoop output:
> 
> Oct  3 16:01:59 nimitz kernel: [  180.273883] usb usb7: opened by process 6485: hald-addon-usb-
> Oct  3 16:01:59 nimitz kernel: [  180.273894] usb usb7: usbdev_ioctl: CONNECTINFO
> Oct  3 16:01:59 nimitz kernel: [  180.273935] usb usb7: opened by process 6485: hald-addon-usb-
> 
> grepping for hald:
> dave@...itz:~$ ps aux | grep hald
> 111       6407  0.5  0.1   6340  4352 ?        Ss   15:59   0:00 /usr/sbin/hald
> root      6411  0.0  0.0   3348  1152 ?        S    15:59   0:00 hald-runner
> root      6485  0.1  0.0   2996  1140 ?        S    15:59   0:00 hald-addon-usb-csr: listening on 'MX700 Optical Mouse'
> ...
> 
> If I kill off 'hald-addon-usb-csr', then the resets stop happening.

the addon is for some weird handling of CSR based HID devices in their
Bluetooth/USB HID proxy devices or so.

Alan, that is the vendor request you saw. Don't ask me what exactly this
one does. I really have no idea.

Regards

Marcel


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