Comment 0 for bug 1319457

This is a follow-up to bug 1305133

I sometimes have a USB headset plugged in to my computer. When the headset is plugged in, I get tens of messages like the following in dmesg and syslog:

May 14 11:25:24 aether kernel: [ 315.447988] retire_playback_urb: 829 callbacks suppressed
May 14 11:25:29 aether kernel: [ 320.458042] retire_playback_urb: 831 callbacks suppressed

To reproduce:
1) Plug in a USB headset

Expected results:
No "retire_playback_urb ... callbacks suppressed" spam in the kernel log (dmesg/syslog/kern.log)

Actual results:
Tens of similar "callbacks suppressed" messages in the kernel logs.

We need to integrate this patch into the kernel to completely clean up these rate-limited messages in syslog:
https://lkml.org/lkml/2014/5/2/156

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-26-generic 3.13.0-26.48
ProcVersionSignature: Ubuntu 3.13.0-26.48-generic 3.13.11
Uname: Linux 3.13.0-26-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: steve 2643 F.... pulseaudio
 /dev/snd/controlC1: steve 2643 F.... pulseaudio
 /dev/snd/controlC0: steve 2643 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed May 14 11:29:19 2014
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-precise-amd64-20130203-1
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=79084358-087f-4cee-a0be-e2f78361873f
InstallationDate: Installed on 2013-12-02 (162 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50
MachineType: Dell Inc. XPS13 9333
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-26-generic root=UUID=0b9db31c-747b-40ad-bbbd-13a9a29caece ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-26-generic N/A
 linux-backports-modules-3.13.0-26-generic N/A
 linux-firmware 1.127.2
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-02-12 (90 days ago)
dmi.bios.date: 11/11/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 0GFTRT
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd11/11/2013:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.