linux-kernel - Re: 2.6.31.4: USB/UPS connectivity issue on Intel DP55KG Motherboard [DEBUG logs included upsd/upsmon/usbhid-ups]

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Message-ID: <Pine.LNX.4.44L0.0910191016370.3899-100000@iolanthe.rowland.org>
Date:	Mon, 19 Oct 2009 10:23:32 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
cc:	USB list <linux-usb@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.31.4: USB/UPS connectivity issue on Intel DP55KG Motherboard
 [DEBUG logs included upsd/upsmon/usbhid-ups]

On Sun, 18 Oct 2009, Justin Piszcz wrote:

> I have performed all of the steps you recommended, there is also a bug in
> the docs, the directory seems to be different, or at least if you have
> everything compiled into the kernel and not using modules.

> Steps from the USB documentation:
> 
> # mount -t debugfs none_debugs /sys/kernel/debug
> #
> 
> The kernel documentation is outdated:
> 
> # ls /sys/kernel/debug/usbmon
> 0s  0u  1s  1t  1u  2s  2t  2u  3s  3t  3u  4s  4t  4u
> #
> 
> The directory is: 
> # ls /sys/kernel/debug/usb/usbmon
> 0s  0u  1s  1t  1u  2s  2t  2u

This has already been corrected in the 2.6.32-rc kernels.

However there is another respect in which the documentation is
outdated: It mentions /proc/bus/usb/devices.  That file has moved; it
is now named /sys/kernel/debug/usb/devices.  Would you like to submit a
patch fixing this?

Alan Stern

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