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[Launchpad Bug Tracker <1240038@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.11.0-13.20

---------------
linux (3.11.0-13.20) saucy; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1242793

  [ Paolo Pisati ]

  * [Config] amhf: VIRTIO_CONSOLE=y
    - LP: #1237982
  * [Config] AHCI_IMX=y
    - LP: #1240038

  [ Tim Gardner ]

  * [Config] CONFIG_USB_OTG=n for all arches
    - LP: #1047527
  * dm-raid4-5: Fix compile issues
    - LP: #1241086
  * [Config] CONFIG_DM_RAID45=m
    - LP: #1241086

  [ Upstream Kernel Changes ]

  * Revert "cw1200: Don't perform SPI transfers in interrupt context"
    - LP: #1237530
  * block: Fix bio_copy_data()
    - LP: #1237530
  * sysv: Add forgotten superblock lock init for v7 fs
    - LP: #1237530
  * bcache: Fix a dumb journal discard bug
    - LP: #1237530
  * bcache: Strip endline when writing the label through sysfs
    - LP: #1237530
  * bcache: Fix for when no journal entries are found
    - LP: #1237530
  * bcache: Fix a writeback performance regression
    - LP: #1237530
  * bcache: Fix a flush/fua performance bug
    - LP: #1237530
  * bcache: Fix a dumb CPU spinning bug in writeback
    - LP: #1237530
  * bcache: Fix a shrinker deadlock
    - LP: #1237530
  * bcache: Fix for handling overlapping extents when reading in a btree
    node
    - LP: #1237530
  * bcache: Fix flushes in writeback mode
    - LP: #1237530
  * kernel/reboot.c: re-enable the function of variable reboot_default
    - LP: #1237530
  * x86/reboot: Add quirk to make Dell C6100 use reboot=pci automatically
    - LP: #1237530
  * tools lib lk: Uninclude linux/magic.h in debugfs.c
    - LP: #1237530
  * x86, efi: Don't map Boot Services on i386
    - LP: #1237530
  * mei: make me client counters less error prone
    - LP: #1237530
  * mei: bus: stop wait for read during cl state transition
    - LP: #1237530
  * mei: cancel stall timers in mei_reset
    - LP: #1237530
  * tty: Fix SIGTTOU not sent with tcflush()
    - LP: #1237530
  * serial: tegra: fix tty-kref leak
    - LP: #1237530
  * serial: pch_uart: fix tty-kref leak in rx-error path
    - LP: #1237530
  * serial: pch_uart: fix tty-kref leak in dma-rx path
    - LP: #1237530
  * ARM: 7837/3: fix Thumb-2 bug in AES assembler code
    - LP: #1237530
  * staging: vt6656: [BUG] main_usb.c oops on device_close move flag
    earlier.
    - LP: #1237530
  * staging: vt6656: [BUG] iwctl_siwencodeext return if device not open
    - LP: #1237530
  * drm/i915/tv: clear adjusted_mode.flags
    - LP: #1237530
  * cw1200: Use a threaded oneshot irq handler for cw1200_spi
    - LP: #1237530
  * xhci: Ensure a command structure points to the correct trb on the
    command ring
    - LP: #1237530
  * xhci: Fix oops happening after address device timeout
    - LP: #1237530
  * USB: fix PM config symbol in uhci-hcd, ehci-hcd, and xhci-hcd
    - LP: #1237530
  * xhci: Fix race between ep halt and URB cancellation
    - LP: #1237530
  * USB: OHCI: accept very late isochronous URBs
    - LP: #1237530
  * USB: UHCI: accept very late isochronous URBs
    - LP: #1237530
  * USB: Fix breakage in ffs_fs_mount()
    - LP: #1237530
  * fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy
    - LP: #1237530
  * usb: dwc3: pci: add support for BayTrail
    - LP: #1237530
  * usb: dwc3: add support for Merrifield
    - LP: #1237530
  * usb/core/devio.c: Don't reject control message to endpoint with wrong
    direction bit
    - LP: #1237530
  * driver core : Fix use after free of dev->parent in device_shutdown
    - LP: #1237530
  * dm snapshot: workaround for a false positive lockdep warning
    - LP: #1237530
  * dm-snapshot: fix performance degradation due to small hash size
    - LP: #1237530
  * dm mpath: disable WRITE SAME if it fails
    - LP: #1237530
  * drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
    - LP: #1237530
  * drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
    - LP: #1237530
  * drm/radeon/cik: Fix printing of client name on VM protection fault
    - LP: #1237530
  * drm/radeon/cik: Fix encoding of number of banks in tiling configuration
    info
    - LP: #1237530
  * drm/radeon/cik: fix overflow in vram fetch
    - LP: #1237530
  * drm/radeon: avoid UVD corruption on AGP cards using GPU gart
    - LP: #1237530
  * drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2)
    - LP: #1237530
  * drm/radeon: don't set default clocks for SI when DPM is disabled
    - LP: #1237530
  * drm/radeon: disable tests/benchmarks if accel is disabled
    - LP: #1237530
  * drm/radeon: add missing hdmi callbacks for rv6xx
    - LP: #1237530
  * drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
    - LP: #1237530
  * hwmon: (applesmc) Check key count before proceeding
    - LP: #1237530
  * ALSA: compress: Fix compress device unregister.
    - LP: #1237530
  * irq: Always define devm_{request_threaded,free}_irq()
    - LP: #1237530
  * Linux 3.11.4
    - LP: #1237530
  * ARM: dtsi: enable ahci sata on imx6q platforms
    - LP: #1240038
  * nfsd4: fix leak of inode reference on delegation failure
    - LP: #1240072
  * HID: fix data access in implement()
    - LP: #1240072
  * HID: fix unused rsize usage
    - LP: #1240072
  * sh_eth: fix napi_{en|dis}able() calls racing against interrupts
    - LP: #1240072
  * caif: Add missing braces to multiline if in cfctrl_linkup_request
    - LP: #1240072
  * tcp: Add missing braces to do_tcp_setsockopt
    - LP: #1240072
  * ipv6/exthdrs: accept tlv which includes only padding
    - LP: #1240072
  * net: fib: fib6_add: fix potential NULL pointer dereference
    - LP: #1240072
  * net: sctp: fix bug in sctp_poll for SOCK_SELECT_ERR_QUEUE
    - LP: #1240072
  * net: sctp: fix smatch warning in sctp_send_asconf_del_ip
    - LP: #1240072
  * net: fix multiqueue selection
    - LP: #1240072
  * net: flow_dissector: fix thoff for IPPROTO_AH
    - LP: #1240072
  * net_sched: htb: fix a typo in htb_change_class()
    - LP: #1240072
  * r8169: enforce RX_MULTI_EN for the 8168f.
    - LP: #1240072
  * netpoll: Should handle ETH_P_ARP other than ETH_P_IP in
    netpoll_neigh_reply
    - LP: #1240072
  * netpoll: fix NULL pointer dereference in netpoll_cleanup
    - LP: #1240072
  * tuntap: correctly handle error in tun_set_iff()
    - LP: #1240072
  * net: sctp: fix ipv6 ipsec encryption bug in sctp_v6_xmit
    - LP: #1240072
  * xen-netback: count number required slots for an skb more carefully
    - LP: #1240072
  * resubmit bridge: fix message_age_timer calculation
    - LP: #1240072
  * bridge: Clamp forward_delay when enabling STP
    - LP: #1240072
  * bridge: use br_port_get_rtnl within rtnl lock
    - LP: #1240072
  * bridge: fix NULL pointer deref of br_port_get_rcu
    - LP: #1240072
  * ip6_tunnels: raddr and laddr are inverted in nl msg
    - LP: #1240072
  * net: sctp: rfc4443: do not report ICMP redirects to user space
    - LP: #1240072
  * ethernet/arc/arc_emac: Fix huge delays in large file copies
    - LP: #1240072
  * vxlan: Avoid creating fdb entry with NULL destination
    - LP: #1240072
  * batman-adv: set the TAG flag for the vid passed to BLA
    - LP: #1240072
  * net:dccp: do not report ICMP redirects to user space
    - LP: #1240072
  * ip: use ip_hdr() in __ip_make_skb() to retrieve IP header
    - LP: #1240072
  * ip: generate unique IP identificator if local fragmentation is allowed
    - LP: #1240072
  * skge: fix invalid value passed to pci_unmap_sigle
    - LP: #1240072
  * ipv6: udp packets following an UFO enqueued packet need also be handled
    by UFO
    - LP: #1240072
  * via-rhine: fix VLAN priority field (PCP, IEEE 802.1p)
    - LP: #1240072
  * IPv6 NAT: Do not drop DNATed 6to4/6rd packets
    - LP: #1240072
  * net: net_secret should not depend on TCP
    - LP: #1240072
  * ip_tunnel: Do not use stale inner_iph pointer.
    - LP: #1240072
  * dm9601: fix IFF_ALLMULTI handling
    - LP: #1240072
  * bonding: Fix broken promiscuity reference counting issue
    - LP: #1240072
  * ipv6: gre: correct calculation of max_headroom
    - LP: #1240072
  * ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put
    - LP: #1240072
  * ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put
    - LP: #1240072
  * ll_temac: Reset dma descriptors indexes on ndo_open
    - LP: #1240072
  * ip_tunnel: Fix a memory corruption in ip_tunnel_xmit
    - LP: #1240072
  * ip_tunnel_core: Change __skb_push back to skb_push
    - LP: #1240072
  * sit: allow to use rtnl ops on fb tunnel
    - LP: #1240072
  * ip6tnl: allow to use rtnl ops on fb tunnel
    - LP: #1240072
  * avr32: fix clockevents kernel warning
    - LP: #1240072
  * regulator: ti-abb: Fix bias voltage glitch in transition to bypass mode
    - LP: #1240072
  * fs/binfmt_elf.c: prevent a coredump with a large vm_map_count from
    Oopsing
    - LP: #1240072
  * gpio/omap: maintain GPIO and IRQ usage separately
    - LP: #1240072
  * gpio/omap: auto-setup a GPIO when used as an IRQ
    - LP: #1240072
  * ASoC: max98095: a couple array underflows
    - LP: #1240072
  * ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()
    - LP: #1240072
  * ASoC: ab8500-codec: info leak in anc_status_control_put()
    - LP: #1240072
  * ARM: kvm: rename cpu_reset to avoid name clash
    - LP: #1240072
  * ARM: mach-integrator: Add stub for pci_v3_early_init() for !CONFIG_PCI
    - LP: #1240072
  * iommu/arm-smmu: fix a signedness bug
    - LP: #1240072
  * iommu/arm-smmu: fix iommu_present() test in init
    - LP: #1240072
  * iommu/arm-smmu: don't enable SMMU device until probing has completed
    - LP: #1240072
  * powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in
    iommu_init_table()
    - LP: #1240072
  * powerpc/perf: Fix handling of FAB events
    - LP: #1240072
  * powerpc/tm: Switch out userspace PPR and DSCR sooner
    - LP: #1240072
  * powerpc/tm: Turn interrupts hard off in tm_reclaim()
    - LP: #1240072
  * powerpc/vio: Fix modalias_show return values
    - LP: #1240072
  * powerpc: Fix parameter clobber in csum_partial_copy_generic()
    - LP: #1240072
  * powerpc: Fix memory hotplug with sparse vmemmap
    - LP: #1240072
  * powerpc/sysfs: Disable writing to PURR in guest mode
    - LP: #1240072
  * powerpc: Restore registers on error exit from
    csum_partial_copy_generic()
    - LP: #1240072
  * fuse: wait for writeback in fuse_file_fallocate()
    - LP: #1240072
  * fuse: fix fallocate vs. ftruncate race
    - LP: #1240072
  * brcmfmac: obtain platform data upon module initialization
    - LP: #1240072
  * Bluetooth: Fix security level for peripheral role
    - LP: #1240072
  * Bluetooth: Fix encryption key size for peripheral role
    - LP: #1240072
  * Bluetooth: Add a new PID/VID 0cf3/e005 for AR3012.
    - LP: #1240072
  * Bluetooth: Add support for BCM20702A0 [0b05, 17cb]
    - LP: #1240072
  * Bluetooth: Introduce a new HCI_RFKILLED flag
    - LP: #1240072
  * Bluetooth: Fix rfkill functionality during the HCI setup stage
    - LP: #1240072
  * nilfs2: fix issue with race condition of competition between segments
    for dirty blocks
    - LP: #1240072
  * ipc/sem.c: fix race in sem_lock()
    - LP: #1240072
  * ipc,msg: prevent race with rmid in msgsnd,msgrcv
    - LP: #1240072
  * ipc: fix race with LSMs
    - LP: #1240072
  * sparc64: Fix buggy strlcpy() conversion in ldom_reboot().
    - LP: #1240072
  * sparc: fix ldom_reboot buffer overflow harder
    - LP: #1240072
  * sparc64: Remove RWSEM export leftovers
    - LP: #1240072
  * sparc64: Fix ITLB handler of null page
    - LP: #1240072
  * esp_scsi: Fix tag state corruption when autosensing.
    - LP: #1240072
  * sparc64: Fix off by one in trampoline TLB mapping installation loop.
    - LP: #1240072
  * sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall
    - LP: #1240072
  * sparc32: Fix exit flag passed from traced sys_sigreturn
    - LP: #1240072
  * mm: Fix generic hugetlb pte check return type.
    - LP: #1240072
  * mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages
    snapshotting) was ignored
    - LP: #1240072
  * kernel/kmod.c: check for NULL in call_usermodehelper_exec()
    - LP: #1240072
  * staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice
    - LP: #1240072
  * NFSv4.1: nfs4_fl_prepare_ds - fix bugs when the connect attempt fails
    - LP: #1240072
  * mwifiex: fix NULL pointer dereference in usb suspend handler
    - LP: #1240072
  * mwifiex: fix hang issue for USB chipsets
    - LP: #1240072
  * mwifiex: fix PCIe hs_cfg cancel cmd timeout
    - LP: #1240072
  * usb: chipidea: add Intel Clovertrail pci id
    - LP: #1240072
  * USB: serial: option: Ignore card reader interface on Huawei E1750
    - LP: #1240072
  * xen/hvc: allow xenboot console to be used again
    - LP: #1240072
  * ib_srpt: Destroy cm_id before destroying QP.
    - LP: #1240072
  * ib_srpt: always set response for task management
    - LP: #1240072
  * rtlwifi: Align private space in rtl_priv struct
    - LP: #1240072
  * p54usb: add USB ID for Corega WLUSB2GTST USB adapter
    - LP: #1240072
  * mm: avoid reinserting isolated balloon pages into LRU lists
    - LP: #1240072
  * iscsi-target: Only perform wait_for_tasks when performing shutdown
    - LP: #1240072
  * net: Update the sysctl permissions handler to test effective uid/gid
    - LP: #1240072
  * irq: Force hardirq exit's softirq processing on its own stack
    - LP: #1240072
  * drm/radeon: fix hdmi callbacks for rv6xx (incorrectly added to r520)
    - LP: #1240072
  * dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet
    - LP: #1240072
  * dmaengine: imx-dma: fix callback path in tasklet
    - LP: #1240072
  * dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic
    - LP: #1240072
  * ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()
    - LP: #1240072
  * xfs: fix node forward in xfs_node_toosmall
    - LP: #1240072
  * drm/nouveau/bios/init: stub opcode 0xaa
    - LP: #1240072
  * ARM: tegra: unify Tegra's Kconfig a bit more
    - LP: #1240072
  * ALSA: hda - Fix GPIO for Acer Aspire 3830TG
    - LP: #1240072
  * ARM: multi_v7_defconfig: enable ARM_ATAG_DTB_COMPAT
    - LP: #1240072
  * HID: wiimote: fix FF deadlock
    - LP: #1240072
  * mmc: fix null pointer use in mmc_blk_remove_req
    - LP: #1240072
  * tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT
    - LP: #1240072
  * s390: fix system call restart after inferior call
    - LP: #1240072
  * Btrfs: reset ret in record_one_backref
    - LP: #1240072
  * Btrfs: change how we queue blocks for backref checking
    - LP: #1240072
  * Btrfs: skip subvol entries when checking if we've created a dir already
    - LP: #1240072
  * Btrfs: remove ourselves from the cluster list under lock
    - LP: #1240072
  * HID: roccat: add support for KonePureOptical v2
    - LP: #1240072
  * HID: add Holtek USB ID 04d9:a081 SHARKOON DarkGlider
    - LP: #1240072
  * HID: uhid: add devname module alias
    - LP: #1240072
  * HID: uhid: allocate static minor
    - LP: #1240072
  * net: qmi_wwan: add new Qualcomm devices
    - LP: #1240072
  * bcache: Fix a null ptr deref regression
    - LP: #1240072
  * Linux 3.11.5
    - LP: #1240072
  * ALSA: snd-usb-usx2y: remove bogus frame checks
    - LP: #1242700
  * ALSA: hda - hdmi: Fix channel map switch not taking effect
    - LP: #1242700
  * ALSA: hda - Add fixup for ASUS N56VZ
    - LP: #1242700
  * ALSA: hda - Fix microphone for Sony VAIO Pro 13 (Haswell model)
    - LP: #1227093, #1242700
  * random: run random_int_secret_init() run after all late_initcalls
    - LP: #1242700
  * vfs: allow O_PATH file descriptors for fstatfs()
    - LP: #1242700
  * i2c: omap: Clear ARDY bit twice
    - LP: #1242700
  * hwmon: (applesmc) Always read until end of data
    - LP: #1242700
  * Btrfs: use right root when checking for hash collision
    - LP: #1242700
  * ext4: fix memory leak in xattr
    - LP: #1242700
  * KVM: PPC: Book3S HV: Fix typo in saving DSCR
    - LP: #1242700
  * parisc: fix interruption handler to respect pagefault_disable()
    - LP: #1242700
  * ARC: Fix __udelay calculation
    - LP: #1242700
  * ARC: Handle zero-overhead-loop in unaligned access handler
    - LP: #1242700
  * ARC: Fix 32-bit wrap around in access_ok()
    - LP: #1242700
  * ARC: Workaround spinlock livelock in SMP SystemC simulation
    - LP: #1242700
  * ARC: Fix signal frame management for SA_SIGINFO
    - LP: #1242700
  * ARC: Ignore ptrace SETREGSET request for synthetic register "stop_pc"
    - LP: #1242700
  * watchdog: ts72xx_wdt: locking bug in ioctl
    - LP: #1242700
  * watchdog: kempld_wdt: Fix bit mask definition
    - LP: #1242700
  * MIPS: stack protector: Fix per-task canary switch
    - LP: #1242700
  * drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()
    - LP: #1242700
  * compiler/gcc4: Add quirk for 'asm goto' miscompilation bug
    - LP: #1242700
  * ALSA: hda - Fix mono speakers and headset mic on Dell Vostro 5470
    - LP: #1236228, #1242700
  * drm/i915/hsw: Disable L3 caching of atomic memory operations.
    - LP: #1242700
  * drm/i915: Only apply DPMS to the encoder if enabled
    - LP: #1242700
  * drm/i915: fix rps.vlv_work initialization
    - LP: #1242700
  * drm/radeon/dpm: off by one in si_set_mc_special_registers()
    - LP: #1242700
  * drm/radeon: forever loop on error in radeon_do_test_moves()
    - LP: #1242700
  * drm/radeon: fix typo in CP DMA register headers
    - LP: #1242700
  * drm/radeon: fix hw contexts for SUMO2 asics
    - LP: #1242700
  * ipc,shm: introduce lockless functions to obtain the ipc object
    - LP: #1242700
  * ipc,shm: shorten critical region in shmctl_down
    - LP: #1242700
  * ipc: drop ipcctl_pre_down
    - LP: #1242700
  * ipc,shm: introduce shmctl_nolock
    - LP: #1242700
  * ipc,shm: make shmctl_nolock lockless
    - LP: #1242700
  * ipc,shm: shorten critical region for shmctl
    - LP: #1242700
  * ipc,shm: cleanup do_shmat pasta
    - LP: #1242700
  * ipc,shm: shorten critical region for shmat
    - LP: #1242700
  * ipc: rename ids->rw_mutex
    - LP: #1242700
  * ipc,msg: drop msg_unlock
    - LP: #1242700
  * ipc: document general ipc locking scheme
    - LP: #1242700
  * ipc, shm: guard against non-existant vma in shmdt(2)
    - LP: #1242700
  * ipc: drop ipc_lock_by_ptr
    - LP: #1242700
  * ipc, shm: drop shm_lock_check
    - LP: #1242700
  * ipc: drop ipc_lock_check
    - LP: #1242700
  * ipc/sem.c: optimize sem_lock()
    - LP: #1242700
  * ipc/sem.c: synchronize the proc interface
    - LP: #1242700
  * ipc/sem.c: update sem_otime for all operations
    - LP: #1242700
  * x86: avoid remapping data in parse_setup_data()
    - LP: #1242700
  * Linux 3.11.6
    - LP: #1242700
 -- Brad Figg <brad.figg@xxxxxxxxxxxxx>   Mon, 21 Oct 2013 10:21:14 -0700

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

-- 
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https://bugs.launchpad.net/bugs/1240038

Title:
  imx6: sata fixes

Status in “linux” package in Ubuntu:
  Fix Committed
Status in “linux” source package in Saucy:
  Fix Released

Bug description:
  SRU Justification:

  Impact:

  /dev/sda doesn't show up on imx6 board and while support for the sata controller was submitted upstream[1], we were missing a dts snippet that didn't make the 3.11 window (but entered as part of 3.12, thus i cherry-picked plus some mechanical 
  modification to make it apply).

  Moreover, building this driver as a module triggers an error when
  loading:

  [    3.447345] sysfs: cannot create duplicate filename '/bus/platform/devices/ahci'
  [    3.454799] Modules linked in: ahci_imx(F+) xor(F+) zlib_deflate(F) libcrc32c(F)
  [    3.462343] CPU: 0 PID: 193 Comm: modprobe Tainted: GF            3.11.0-13-generic #20~imx6sata
  [    3.471223] [<c001dd70>] (unwind_backtrace+0x0/0x138) from [<c00184dc>] (show_stack+0x10/0x14)
  [    3.479916] [<c00184dc>] (show_stack+0x10/0x14) from [<c065c710>] (dump_stack+0x74/0x90)
  [    3.488040] [<c065c710>] (dump_stack+0x74/0x90) from [<c004e2fc>] (warn_slowpath_common+0x68/0x8c)
  [    3.497066] [<c004e2fc>] (warn_slowpath_common+0x68/0x8c) from [<c004e3b4>] (warn_slowpath_fmt+0x30/0x40)
  [    3.498634]    32regs    :   709.200 MB/sec
  [    3.498640] xor: using function: arm4regs (1087.600 MB/sec)
  [    3.516510] [<c004e3b4>] (warn_slowpath_fmt+0x30/0x40) from [<c01a901c>] (sysfs_add_one+0x84/0xa4)
  [    3.525557] [<c01a901c>] (sysfs_add_one+0x84/0xa4) from [<c01a9c20>] (sysfs_do_create_link_sd+0xd0/0x200)
  [    3.535207] [<c01a9c20>] (sysfs_do_create_link_sd+0xd0/0x200) from [<c03bb5a8>] (bus_add_device+0xc4/0x17c)
  [    3.545004] [<c03bb5a8>] (bus_add_device+0xc4/0x17c) from [<c03b98d8>] (device_add+0x38c/0x668)
  [    3.553770] [<c03b98d8>] (device_add+0x38c/0x668) from [<c03bdc3c>] (platform_device_add+0xbc/0x258)
  [    3.562958] [<c03bdc3c>] (platform_device_add+0xbc/0x258) from [<bf01234c>] (imx_ahci_probe+0x17c/0x1e8 [ahci_imx])
  [    3.573456] [<bf01234c>] (imx_ahci_probe+0x17c/0x1e8 [ahci_imx]) from [<c03bd7a8>] (platform_drv_probe+0x18/0x1c)
  [    3.583774] [<c03bd7a8>] (platform_drv_probe+0x18/0x1c) from [<c03bc378>] (driver_probe_device+0x130/0x374)
  [    3.593562] [<c03bc378>] (driver_probe_device+0x130/0x374) from [<c03ba718>] (bus_for_each_drv+0x44/0x8c)
  [    3.603174] [<c03ba718>] (bus_for_each_drv+0x44/0x8c) from [<c03bc1dc>] (device_attach+0x70/0x88)
  [    3.612093] [<c03bc1dc>] (device_attach+0x70/0x88) from [<c03bb6e4>] (bus_probe_device+0x84/0xa8)
  [    3.621018] [<c03bb6e4>] (bus_probe_device+0x84/0xa8) from [<c03b992c>] (device_add+0x3e0/0x668)
  [    3.629853] [<c03b992c>] (device_add+0x3e0/0x668) from [<c03bdc3c>] (platform_device_add+0xbc/0x258)
  [    3.639031] [<c03bdc3c>] (platform_device_add+0xbc/0x258) from [<bf01234c>] (imx_ahci_probe+0x17c/0x1e8 [ahci_imx])
  [    3.649509] [<bf01234c>] (imx_ahci_probe+0x17c/0x1e8 [ahci_imx]) from [<c03bd7a8>] (platform_drv_probe+0x18/0x1c)
  [    3.659810] [<c03bd7a8>] (platform_drv_probe+0x18/0x1c) from [<c03bc378>] (driver_probe_device+0x130/0x374)
  [    3.669588] [<c03bc378>] (driver_probe_device+0x130/0x374) from [<c03bc648>] (__driver_attach+0x8c/0x90)
  [    3.679106] [<c03bc648>] (__driver_attach+0x8c/0x90) from [<c03ba7b4>] (bus_for_each_dev+0x54/0x88)
  [    3.688175] [<c03ba7b4>] (bus_for_each_dev+0x54/0x88) from [<c03bb914>] (bus_add_driver+0xe8/0x260)
  [    3.697266] [<c03bb914>] (bus_add_driver+0xe8/0x260) from [<c03bcb44>] (driver_register+0x78/0x14c)
  [    3.706353] [<c03bcb44>] (driver_register+0x78/0x14c) from [<c0008814>] (do_one_initcall+0xe0/0x198)
  [    3.715532] [<c0008814>] (do_one_initcall+0xe0/0x198) from [<c00a9844>] (load_module+0x1074/0x1778)
  [    3.724617] [<c00a9844>] (load_module+0x1074/0x1778) from [<c00aa004>] (SyS_init_module+0xbc/0x120)
  [    3.733707] [<c00aa004>] (SyS_init_module+0xbc/0x120) from [<c00146c0>] (ret_fast_syscall+0x0/0x30)
  [    3.742781] ---[ end trace 17860721d4bad439 ]---
  [    3.748403] ahci-imx: probe of ahci failed with error -17
  [    3.763773] Request for unknown module key 'Magrathea: Glacier signing key: ec957d9a18384eacadf7527998f7b9343803c433' err -11
  [    3.768979] platform ahci: failed to claim resource 0
  [    3.769006] ahci-imx: probe of ahci failed with error -16

  as it appears it's the same driver that tries to create the same
  sysfile multiple times, failing:

  root@ubuntu-desktop:~# cat /sys/bus/platform/devices/ahci/uevent
  OF_NAME=sata
  OF_FULLNAME=/soc/sata@02200000
  OF_COMPATIBLE_0=fsl,imx6q-ahci
  OF_COMPATIBLE_N=1
  MODALIAS=of:NsataT<NULL>Cfsl,imx6q-ahci

  Statically compiling support for AHCI_IMX works workaround this
  problem (and all the other kernel supporting this board - indeed -
  compile this driver statically BTW), so until a proper fix is found, i
  propose to compile it in.

  Fix:

  apply the two patches below

  Testcase:

  compile a patched kernel and boot it

  [1] http://www.spinics.net/lists/linux-ide/msg45823.html

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