linux-kernel - Re: 2.6.33: Xorg+khubd lockup (D-state) BUG / ioctl EVIOCGNAME failed: Inappropriate ioctl for device / PreInit returned NULL

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Date:	Mon, 29 Mar 2010 07:45:37 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Alan Stern <stern@...land.harvard.edu>
cc:	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	Alan Piszcz <ap@...arrain.com>
Subject: Re: 2.6.33: Xorg+khubd lockup (D-state) BUG / ioctl EVIOCGNAME
 failed: Inappropriate ioctl for device / PreInit returned NULL



On Thu, 25 Mar 2010, Alan Stern wrote:

> On Thu, 25 Mar 2010, Justin Piszcz wrote:
>
> No, it all looks normal.  As a check you could compare this with the
> file contents while the mouse is still operating normally.  About the
> only difference should be the "hcca frame" line, which changes
> constantly.
>
> I guess the next test should be to wait for the mouse to stop working,
> unplug the mouse, and then see once again what these files contain.
>
> Alan Stern

Done, here is the output:

BEFORE UNPLUG:

# cat ./kernel/debug/usb/ohci/0000:00:0b.0/periodic
size = 32
  0 [117]: ed8/f674a040 (ls dev2 ep1in-int qlen 1 max 8 00083082)
  1 [ 98]: ed8/f674a0c0 (ls dev3 ep1in-int qlen 1 max 5 00053083)
  8 [117]: ed8/f674a040
  9 [ 98]: ed8/f674a0c0
16 [117]: ed8/f674a040
17 [ 98]: ed8/f674a0c0
24 [117]: ed8/f674a040
25 [ 98]: ed8/f674a0c0

UNPLUG:

# cat ./kernel/debug/usb/ohci/0000:00:0b.0/periodic
size = 32
  0 [117]: ed8/f674a040 (ls dev2 ep1in-int qlen 1 max 8 00083082)
  8 [117]: ed8/f674a040
16 [117]: ed8/f674a040
24 [117]: ed8/f674a040

AFTER PLUG BACK IN:

# cat ./kernel/debug/usb/ohci/0000:00:0b.0/periodic
size = 32
  0 [117]: ed8/f674a040 (ls dev2 ep1in-int qlen 1 max 8 00083082)
  8 [117]: ed8/f674a040
16 [117]: ed8/f674a040
24 [117]: ed8/f674a040

KERNEL MESSAGES:

[   30.569377] usb 2-5:1.0: uevent
[   30.572365] usb 2-6:1.0: uevent
[ 1053.663314] usb usb1: uevent
[ 1053.663404] usb 1-0:1.0: uevent
[ 1053.663455] usb usb2: uevent
[ 1053.663530] usb 2-0:1.0: uevent
[ 1053.663582] usb 2-5: uevent
[ 1053.663656] usb 2-5:1.0: uevent
[ 1053.663706] usb 2-6: uevent
[ 1053.663777] usb 2-6:1.0: uevent
[333937.016444] hub 2-0:1.0: state 7 ports 8 chg 0000 evt 0040
[333937.016453] ohci_hcd 0000:00:0b.0: GetStatus roothub.portstatus [5] = 0x00030300 PESC CSC LSDA PPS
[333937.016458] hub 2-0:1.0: port 6, status 0300, change 0003, 1.5 Mb/s
[333937.016461] usb 2-6: USB disconnect, address 3
[333937.016463] usb 2-6: unregistering device
[333937.016465] usb 2-6: usb_disable_device nuking all URBs
[333937.016472] ohci_hcd 0000:00:0b.0: shutdown urb f6a2d540 ep1in-intr

Justin.

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