Re: kern/46696: uhub disables port where USB keyboard attached

[kato%wide.ad.jp@localhost]

Dear Nick,

Sorry for a late response. I applied your patch to my NetBSD-6 (6.1_RC2,
sync'ed with CVS tree just now). The patch was applied successfully with
30 lines offset.

I rebooted the machine with the patched kernel 8 times, and in 5 trials
out of 8, the USB keyboard worked fine. But unfortunately in 3 trials,
the USB keyboard didn't work at all. When I unplug the USB keyboard,
and re-plug it with the same USB port, it started to work well. So the
patch improves the situation but doesn't solve the issue, at least with
NetBSD-6.1_RC2.

The alternate patch
        http://www.gson.org/netbsd/bugs/46696/usb.patch
works well even with NetBSD-6.

The diff of dmesg in these cases are:

*** dmesg.ok    Mon Mar 25 11:23:07 2013
--- dmesg.bad   Mon Mar 25 11:23:36 2013
***************
*** 151,157 ****
  acpicpu1 at cpu1: ACPI CPU
  coretemp1 at cpu1: thermal sensor, 1 C resolution
  timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
! timecounter: Timecounter "TSC" frequency 3093152640 Hz quality 3000
  uhub0 at usb0: vendor 0x8086 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
  uhub0: 2 ports with 2 removable, self powered
  uhub1 at usb1: vendor 0x8086 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
--- 151,157 ----
  acpicpu1 at cpu1: ACPI CPU
  coretemp1 at cpu1: thermal sensor, 1 C resolution
  timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
! timecounter: Timecounter "TSC" frequency 3093079200 Hz quality 3000
  uhub0 at usb0: vendor 0x8086 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
  uhub0: 2 ports with 2 removable, self powered
  uhub1 at usb1: vendor 0x8086 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
***************
*** 174,189 ****
  uhub3: single transaction translator
  uhub2: 4 ports with 4 removable, self powered
  uhub3: 6 ports with 6 removable, self powered
! uhidev0 at uhub3 port 2 configuration 1 interface 0
! uhidev0: vendor 0x04f3 product 0x0103, rev 1.10/1.07, addr 3, iclass 3/1
! ukbd0 at uhidev0
! wskbd1 at ukbd0 mux 1
! wskbd1: connecting to wsdisplay0
! uhidev1 at uhub3 port 2 configuration 1 interface 1
! uhidev1: vendor 0x04f3 product 0x0103, rev 1.10/1.07, addr 3, iclass 3/0
! uhidev1: 2 report ids
! uhid0 at uhidev1 reportid 1: input=2, output=0, feature=0
! uhid1 at uhidev1 reportid 2: input=1, output=0, feature=0
  Kernelized RAIDframe activated
  pad0: outputs: 44100Hz, 16-bit, stereo
  audio1 at pad0: half duplex, playback, capture
--- 174,180 ----
  uhub3: single transaction translator
  uhub2: 4 ports with 4 removable, self powered
  uhub3: 6 ports with 6 removable, self powered
! uhub3: device problem, disabling port 2
  Kernelized RAIDframe activated
  pad0: outputs: 44100Hz, 16-bit, stereo
  audio1 at pad0: half duplex, playback, capture



From: Nick Hudson <skrll%netbsd.org@localhost>
Subject: Re: kern/46696: uhub disables port where USB keyboard attached
Date: Tue, 19 Mar 2013 08:37:25 +0000

> Does this patch against -current fix the problem?
> 
> Thanks,
> Nick