(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
It's a post-2.6.30 regression.
On Fri, 3 Jul 2009 21:13:32 GMT bugzilla-daemon@bugzilla.kernel.org wrote:
quoted text >
http://bugzilla.kernel.org/show_bug.cgi?id=13700
>
> Summary: usb error flood in dmesg, makes kde use plenty of cpu
> - bisected
> Product: Drivers
> Version: 2.5
> Kernel Version: 2.6.30-rc1 and later
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: USB
> AssignedTo:
greg@kroah.com
> ReportedBy:
jouni.susiluoto@helsinki.fi
> Regression: Yes
>
>
> Created an attachment (id=22197)
> --> (
http://bugzilla.kernel.org/attachment.cgi?id=22197 )
> lsusb -v from nonworking system
>
> With all kernels after (copied from git-bisect...)
>
>
> 54530bded6ecf22d683423b66fc3cd6dddb249aa is first bad commit
> commit 54530bded6ecf22d683423b66fc3cd6dddb249aa
> Author: Takashi Iwai <tiwai@suse.de>
> Date: Thu Feb 5 15:55:18 2009 +0100
>
> ALSA: usb - Add missing KERN_* prefix to printk
>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
>
> :040000 040000 c9808b346d4581fd1c6df76a7a00ad29853a6250
> 5ab0b206b85c5b54c6a5809b4d14c1a86778442b M sound
I think the bisect went wrong :( That patch doesn't really do anything.
quoted text >
> I get the following errors in dmesg:
>
>
> [ 9009.206070] usb 5-2: new low speed USB device using uhci_hcd and address 101
> [ 9009.365159] usb 5-2: string descriptor 0 read error: -32
> [ 9009.387159] usb 5-2: New USB device found, idVendor=043e, idProduct=9802
> [ 9009.387167] usb 5-2: New USB device strings: Mfr=0, Product=1,
> SerialNumber=0
> [ 9009.387314] usb 5-2: configuration #1 chosen from 1 choice
> [ 9009.395821] usb 5-2: can't set config #1, error -71
> [ 9009.395931] usb 5-2: USB disconnect, address 101
> [ 9009.956068] usb 5-2: new low speed USB device using uhci_hcd and address 102
> [ 9010.115158] usb 5-2: string descriptor 0 read error: -32
> [ 9010.134159] usb 5-2: New USB device found, idVendor=043e, idProduct=9802
> [ 9010.134166] usb 5-2: New USB device strings: Mfr=0, Product=1,
> SerialNumber=0
> [ 9010.134322] usb 5-2: configuration #1 chosen from 1 choice
> [ 9010.138154] usb 5-2: can't set config #1, error -71
> [ 9010.138273] usb 5-2: USB disconnect, address 102
>
>
> With a working kernel, like 2.6.29.5, the the usb section 5-2 reads:
>
>
> [ 6.878042] usb 5-2: new low speed USB device using uhci_hcd and address 2
> [ 7.037499] usb 5-2: string descriptor 0 read error: -32
> [ 7.037546] usb 5-2: New USB device found, idVendor=043e, idProduct=9802
> [ 7.037549] usb 5-2: New USB device strings: Mfr=0, Product=1,
> SerialNumber=0
> [ 7.040584] usb 5-2: configuration #1 chosen from 1 choice
>
> lsusb for 2.6.29.5 is:
>
>
> Bus 005 Device 002: ID 043e:9802 LG Electronics USA, Inc.
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> and for later kernels, it is the same, but the first line is completely
> missing.
>
> Attached are lsusb -v from both nonworking and working systems, and .config of
> the latest tested nonworking kernel version, 2.6.31-rc1-git3.
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