usbaudio: unit X: unexpected type X - parse_audio_unit() fails

[Chris J Arges]

SRU Justification:

    Impact: Users of the 3.2/3.5 kernel may not be able to use their usbaudio devices.
    Fix: commit 61ac51301e6c6d4ed977d7674ce2b8e713619a9b upstream. This is already applied in 3.8.
    Testcase: Build with the fix, attach affected usbaudio devices. See if those devices work after the patch.

--

For some usbaudio devices, an unexpected type can cause parse_audio_unit() to fail.
This results in a message like the following:

[544717.685926] usb 1-1.5: new high-speed USB device number 14 using ehci_hcd
[544717.779149] usb 1-1.5: New USB device found, idVendor=1235, idProduct=8014
[544717.779154] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[544717.779157] usb 1-1.5: Product: Scarlett 18i8 USB
[544717.779160] usb 1-1.5: Manufacturer: Focusrite
[544717.779162] usb 1-1.5: SerialNumber: 00009F2B
[544717.833068] usbaudio: unit 51: unexpected type 0x09
[544717.833568] usbaudio: unit 52: unexpected type 0x09

The commit 61ac51301e6c6d4ed977d7674ce2b8e713619a9b, allows for this type to also be handled, allowing the usbaudio device to operate.

This was fixed in v3.9-rc4 and beyond; therefore precise/quantal and raring are affected. However it looks like the patch landed in stable for 3.8.x.

[Chris J Arges (arges)]

Additional information:
https://lkml.org/lkml/2013/7/17/727

[Chris J Arges (arges)]

This is already fixed in precise/raring due to upstream stable work.

[Chris J Arges (arges)]

My mistake, this actually needs to be submitted to 3.2.x stable.

[Brad Figg (brad-figg)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed' to 'verification-done'.

If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Chris J Arges (arges)]

Works for me.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.5.0-40.62

---------------
linux (3.5.0-40.62) quantal; urgency=low

  [ Brad Figg ]

  * [Config] KUSER_HELPERS = Y
  * Release Tracking Bug
    - LP: #1215129

linux (3.5.0-40.61) quantal; urgency=low

  [ Andy Whitcroft ]

  * [Packaging] supply perf with appropriate prefix to ensure use of local
    config
    - LP: #1206200
    - CVE-2013-1060

  [ John Johansen ]

  * Revert "SAUCE: (no-up) AppArmor: Disable Add PR_{GET,SET}_NO_NEW_PRIVS
    to prevent execve from granting privs"
    - LP: #1202161

  [ Joseph Salisbury ]

  * SAUCE: (no-up) intel_ips: blacklist ASUSTek G60JX laptops
    - LP: #1210848

  [ Stefan Bader ]

  * (debian) Abort build on unresolved symbols
    - LP: #1166197

  [ Tim Gardner ]

  * [Config] Include rbd and kvm in the virtual inclusion list
    - LP: #1206961

  [ Upstream Kernel Changes ]

  * ALSA: usb: Parse UAC2 extension unit like for UAC1
    - LP: #1212430
  * Btrfs: fix hash overflow handling
    - LP: #1091187, #1091188
    - CVE-2012-5375
  * [media] media: dmxdev: remove dvb_ringbuffer_flush() on writer side
    - LP: #1214956
  * writeback: Fix periodic writeback after fs mount
    - LP: #1214956
  * nfsd4: fix decoding of compounds across page boundaries
    - LP: #1214956
  * ARM: shmobile: emev2 GIO3 resource fix
    - LP: #1214956
  * uprobes: Fix return value in error handling path
    - LP: #1214956
  * tracing: Fix irqs-off tag display in syscall tracing
    - LP: #1214956
  * [CIFS] use sensible file nlink values if unprovided
    - LP: #1214956
  * ASoC: sglt5000: Fix the default value of CHIP_SSS_CTRL
    - LP: #1214956
  * ASoC: sglt5000: Fix SGTL5000_PLL_FRAC_DIV_MASK
    - LP: #1214956
  * [SCSI] megaraid_sas: fix memory leak if SGL has zero length entries
    - LP: #1214956
  * iscsi-target: Fix tfc_tpg_nacl_auth_cit configfs length overflow
    - LP: #1214956
  * dm mpath: fix ioctl deadlock when no paths
    - LP: #1214956
  * dm verity: fix inability to use a few specific devices sizes
    - LP: #1214956
  * lockd: protect nlm_blocked access in nlmsvc_retry_blocked
    - LP: #1214956
  * ext4: don't show usrquota/grpquota twice in /proc/mounts
    - LP: #1214956
  * perf: Clone child context from parent context pmu
    - LP: #1214956
  * perf: Remove WARN_ON_ONCE() check in __perf_event_enable() for valid
    scenario
    - LP: #1214956
  * perf: Fix perf_lock_task_context() vs RCU
    - LP: #1214956
  * ext4: don't allow ext4_free_blocks() to fail due to ENOMEM
    - LP: #1214956
  * drm/radeon/hdmi: make sure we have an afmt block assigned
    - LP: #1214956
  * ACPI / memhotplug: Fix a stale pointer in error path
    - LP: #1214956
  * PM / Sleep: avoid 'autosleep' in shutdown progress
    - LP: #1214956
  * radeon kms: do not flush uninitialized hotplug work
    - LP: #1214956
  * svcrdma: underflow issue in decode_write_list()
    - LP: #1214956
  * ALSA: asihpi: Fix unlocked snd_pcm_stop() call
    - LP: #1214956
  * ALSA: atiixp: Fix unlocked snd_pcm_stop() call
    - LP: #1214956
  * ALSA: 6fire: Fix unlocked snd_pcm_stop() call
    - LP: #1214956
  * ALSA: ua101: Fix unlocked snd_pcm_stop() call
    - LP: #1214956
  * ALSA: usx...