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[Launchpad Bug Tracker <1465136@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.16.0-44.59

---------------
linux (3.16.0-44.59) utopic; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1472030

  [ Iyappan Subramanian ]

  * SAUCE: (no-up) drivers: net: xgene: fix: Out of order descriptor bytes
    read
    - LP: #1425576

  [ Upstream Kernel Changes ]

  * Revert "tools/vm: fix page-flags build"
    - LP: #1471170
  * NVMe: Add shutdown timeout as module parameter.
    - LP: #1465136
  * Drivers: hv: vmbus: Add support for VMBus panic notifier handler
    - LP: #1463584
  * Drivers: hv: vmbus: Correcting truncation error for constant
    HV_CRASH_CTL_CRASH_NOTIFY
    - LP: #1463584
  * KVM: nVMX: fix lifetime issues for vmcs02
    - LP: #1448269
  * KVM: nVMX: Fix nested vmexit ack intr before load vmcs01
    - LP: #1448269
  * mm/slab_common: support the slub_debug boot option on specific object
    size
    - LP: #1456952
  * kvm: x86: fix kvm_apic_has_events to check for NULL pointer
  * cpuidle: powernv: Populate cpuidle state details by querying the
    device-tree
    - LP: #1470404
  * cpuidle: powernv: Read target_residency value of idle states from DT if
    available
    - LP: #1470404
  * cpuidle: powernv: Avoid endianness conversions while parsing DT
    - LP: #1470404
  * cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state
    - LP: #1470404
  * iio: adis16400: Report pressure channel scale
    - LP: #1471170
  * iio: adis16400: Use != channel indices for the two voltage channels
    - LP: #1471170
  * iio: adis16400: Compute the scan mask from channel indices
    - LP: #1471170
  * iio: adis16400: Remove unused variable
    - LP: #1471170
  * iio: adis16400: Fix burst mode
    - LP: #1471170
  * iio: adis16400: Fix burst transfer for adis16448
    - LP: #1471170
  * USB: serial: ftdi_sio: Add support for a Motion Tracker Development
    Board
    - LP: #1471170
  * iio: adc: twl6030-gpadc: Fix modalias
    - LP: #1471170
  * serial: imx: Fix DMA handling for IDLE condition aborts
    - LP: #1471170
  * usb: dwc3: gadget: Fix incorrect DEPCMD and DGCMD status macros
    - LP: #1471170
  * ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion
    - LP: #1471170
  * n_tty: Fix auditing support for cannonical mode
    - LP: #1471170
  * drm/i915/hsw: Fix workaround for server AUX channel clock divisor
    - LP: #1471170
  * x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers
    - LP: #1471170
  * lib: Fix strnlen_user() to not touch memory after specified maximum
    - LP: #1471170
  * Input: elantech - fix detection of touchpads where the revision matches
    a known rate
    - LP: #1471170
  * ALSA: hda/realtek - Add a fixup for another Acer Aspire 9420
    - LP: #1471170
  * ALSA: usb-audio: add MAYA44 USB+ mixer control names
    - LP: #1471170
  * ALSA: usb-audio: fix missing input volume controls in MAYA44 USB(+)
    - LP: #1471170
  * USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle
    - LP: #1471170
  * Input: elantech - add new icbody type
    - LP: #1471170
  * MIPS: Fix enabling of DEBUG_STACKOVERFLOW
    - LP: #1471170
  * xfrm: fix a race in xfrm_state_lookup_byspi
    - LP: #1471170
  * kconfig: Fix warning "‘jump’ may be used uninitialized"
    - LP: #1471170
  * scripts/sortextable: suppress warning: `relocs_size' may be used
    uninitialized
    - LP: #1471170
  * thermal: step_wise: Revert optimization
    - LP: #1471170
  * MIPS: KVM: Do not sign extend on unsigned MMIO load
    - LP: #1471170
  * arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug
    - LP: #1471170
  * net: core: Correct an over-stringent device loop detection.
    - LP: #1471170
  * net: phy: Allow EEE for all RGMII variants
    - LP: #1471170
  * net: dp83640: fix broken calibration routine.
    - LP: #1471170
  * net: dp83640: reinforce locking rules.
    - LP: #1471170
  * unix/caif: sk_socket can disappear when state is unlocked
    - LP: #1471170
  * xen/netback: Properly initialize credit_bytes
    - LP: #1471170
  * udp: fix behavior of wrong checksums
    - LP: #1471170
  * xen: netback: read hotplug script once at start of day.
    - LP: #1471170
  * ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()
    - LP: #1471170
  * bridge: disable softirqs around br_fdb_update to avoid lockup
    - LP: #1471170
  * drm/i915: Assume dual channel LVDS if pixel clock necessitates it
    - LP: #1471170
  * Btrfs: send, add missing check for dead clone root
    - LP: #1471170
  * Btrfs: send, don't leave without decrementing clone root's
    send_progress
    - LP: #1471170
  * btrfs: incorrect handling for fiemap_fill_next_extent return
    - LP: #1471170
  * btrfs: cleanup orphans while looking up default subvolume
    - LP: #1471170
  * iommu/vt-d: Allow RMRR on graphics devices too
    - LP: #1471170
  * iommu/vt-d: Fix passthrough mode with translation-disabled devices
    - LP: #1471170
  * ata: ahci_mvebu: Fix wrongly set base address for the MBus window
    setting
    - LP: #1471170
  * virtio_pci: Clear stale cpumask when setting irq affinity
    - LP: #1471170
  * irqchip: sunxi-nmi: Fix off-by-one error in irq iterator
    - LP: #1471170
  * pata_octeon_cf: fix broken build
    - LP: #1471170
  * Input: synaptics - add min/max quirk for Lenovo S540
    - LP: #1471170
  * drm/i915: Fix DDC probe for passive adapters
    - LP: #1471170
  * cfg80211: wext: clear sinfo struct before calling driver
    - LP: #1471170
  * mm/memory_hotplug.c: set zone->wait_table to null after freeing it
    - LP: #1471170
  * ring-buffer-benchmark: Fix the wrong sched_priority of producer
    - LP: #1471170
  * block: fix ext_dev_lock lockdep report
    - LP: #1471170
  * iser-target: Fix variable-length response error completion
    - LP: #1471170
  * iser-target: release stale iser connections
    - LP: #1471170
  * ALSA: hda - adding a DAC/pin preference map for a HP Envy TS machine
    - LP: #1471170
  * drm/mgag200: Reject non-character-cell-aligned mode widths
    - LP: #1471170
  * crypto: caam - fix uninitialized state->buf_dma field
    - LP: #1471170
  * crypto: caam - improve initalization for context state saves
    - LP: #1471170
  * crypto: caam - fix RNG buffer cache alignment
    - LP: #1471170
  * tracing: Have filter check for balanced ops
    - LP: #1471170
  * drm/radeon: fix freeze for laptop with Turks/Thames GPU.
    - LP: #1471170
  * Linux 3.16.7-ckt14
    - LP: #1471170

 -- Brad Figg <brad.figg@xxxxxxxxxxxxx>  Mon, 06 Jul 2015 17:48:28 -0700

** Changed in: linux (Ubuntu Utopic)
       Status: Fix Committed => Fix Released

** Changed in: linux-lts-utopic (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1465136

Title:
  NVMe shutdown and suspend delay time is too short

Status in linux package in Ubuntu:
  Fix Released
Status in linux-lts-utopic package in Ubuntu:
  Fix Released
Status in linux-lts-utopic source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Released

Bug description:
  A hardware vendor reported that NVMe didn't implement power management
  correctly during shutdown/restart and suspend/resume as below:

  =================================
  However, when it comes to shutdown/restart, the Power Management Events (PME) are not correctly implemented.

  When the host (Linux/Driver) sends the PME_TURN_OFF message it should
  wait for PME_TO_ACK from the device.

  Microsoft Windows versions typically wait for 5 seconds.

  The Linux OSes doesn't wait for the PME_TO_ACK from the device and
  simply turns off the system instantly immediately after the
  shutdown/restart.

  This is not the way to treat PCIe storage devices. The host should allow the device to properly shutdown.  Otherwise the disk will go in to rebuild during next power on which takes a while resulting in OS finding the device not responding and disabling it and not loading the driver for it.
  =================================

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