openwrt/staging/blogic.git
11 years agoACPICA: Fix for a Store->ArgX when ArgX contains a reference to a field.
Bob Moore [Fri, 6 Sep 2013 06:27:15 +0000 (14:27 +0800)]
ACPICA: Fix for a Store->ArgX when ArgX contains a reference to a field.

This change fixes a problem where a Store operation to an ArgX object
that contained a reference to a field object did not complete the
automatic dereference and then write to the actual field object.
Instead, the object type of the field object was inadvertently changed
to match the type of the source operand. The new behavior will actually
write to the field object (buffer field or field unit), thus matching
the correct ACPI-defined behavior.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
11 years agoMerge tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Tue, 3 Sep 2013 23:24:35 +0000 (16:24 -0700)]
Merge tag 'pci-v3.12-changes' of git://git./linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:

  PCI device hotplug:
    - Use PCIe native hotplug, not ACPI hotplug, when possible (Neil Horman)
    - Assign resources on per-host bridge basis (Yinghai Lu)

  MPS (Max Payload Size):
    - Allow larger MPS settings below hotplug-capable Root Port (Yijing Wang)
    - Add warnings about unsafe MPS settings (Yijing Wang)
    - Simplify interface and messages (Bjorn Helgaas)

  SR-IOV:
    - Return -ENOSYS on non-SR-IOV devices (Stefan Assmann)
    - Update NumVFs register when disabling SR-IOV (Yijing Wang)

  Virtualization:
    - Add bus and slot reset support (Alex Williamson)
    - Fix ACS (Access Control Services) issues (Alex Williamson)

  Miscellaneous:
    - Simplify PCIe Capability accessors (Bjorn Helgaas)
    - Add pcibios_pm_ops for arch-specific hibernate stuff (Sebastian Ott)
    - Disable decoding during BAR sizing only when necessary (Zoltan Kiss)
    - Delay enabling bridges until they're needed (Yinghai Lu)
    - Split Designware support into Synopsys and Exynos parts (Jingoo Han)
    - Convert class code to use dev_groups (Greg Kroah-Hartman)
    - Cleanup Designware and Exynos I/O access wrappers (Seungwon Jeon)
    - Fix bridge I/O window alignment (Bjorn Helgaas)
    - Add pci_wait_for_pending_transaction() (Casey Leedom)
    - Use devm_ioremap_resource() in Marvell driver (Tushar Behera)

* tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (63 commits)
  PCI/ACPI: Fix _OSC ordering to allow PCIe hotplug use when available
  PCI: exynos: Add I/O access wrappers
  PCI: designware: Drop "addr" arg from dw_pcie_readl_rc()/dw_pcie_writel_rc()
  PCI: Remove pcie_cap_has_devctl()
  PCI: Support PCIe Capability Slot registers only for ports with slots
  PCI: Remove PCIe Capability version checks
  PCI: Allow PCIe Capability link-related register access for switches
  PCI: Add offsets of PCIe capability registers
  PCI: Tidy bitmasks and spacing of PCIe capability definitions
  PCI: Remove obsolete comment reference to pci_pcie_cap2()
  PCI: Clarify PCI_EXP_TYPE_PCI_BRIDGE comment
  PCI: Rename PCIe capability definitions to follow convention
  PCI: Warn if unsafe MPS settings detected
  PCI: Fix MPS peer-to-peer DMA comment syntax
  PCI: Disable decoding for BAR sizing only when it was actually enabled
  PCI: Add comment about needing pci_msi_off() even when CONFIG_PCI_MSI=n
  PCI: Add pcibios_pm_ops for optional arch-specific hibernate functionality
  PCI: Don't restrict MPS for slots below Root Ports
  PCI: Simplify MPS test for Downstream Port
  PCI: Remove unnecessary check for pcie_get_mps() failure
  ...

11 years agoMerge tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Tue, 3 Sep 2013 22:59:39 +0000 (15:59 -0700)]
Merge tag 'pm+acpi-3.12-rc1' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:

 1) ACPI-based PCI hotplug (ACPIPHP) subsystem rework and introduction
    of Intel Thunderbolt support on systems that use ACPI for signalling
    Thunderbolt hotplug events.  This also should make ACPIPHP work in
    some cases in which it was known to have problems.  From
    Rafael J Wysocki, Mika Westerberg and Kirill A Shutemov.

 2) ACPI core code cleanups and dock station support cleanups from
    Jiang Liu and Rafael J Wysocki.

 3) Fixes for locking problems related to ACPI device hotplug from
    Rafael J Wysocki.

 4) ACPICA update to version 20130725 includig fixes, cleanups, support
    for more than 256 GPEs per GPE block and a change to make the ACPI
    PM Timer optional (we've seen systems without the PM Timer in the
    field already).  One of the fixes, related to the DeRefOf operator,
    is necessary to prevent some Windows 8 oriented AML from causing
    problems to happen.  From Bob Moore, Lv Zheng, and Jung-uk Kim.

 5) Removal of the old and long deprecated /proc/acpi/event interface
    and related driver changes from Thomas Renninger.

 6) ACPI and Xen changes to make the reduced hardware sleep work with
    the latter from Ben Guthro.

 7) ACPI video driver cleanups and a blacklist of systems that should
    not tell the BIOS that they are compatible with Windows 8 (or ACPI
    backlight and possibly other things will not work on them).  From
    Felipe Contreras.

 8) Assorted ACPI fixes and cleanups from Aaron Lu, Hanjun Guo,
    Kuppuswamy Sathyanarayanan, Lan Tianyu, Sachin Kamat, Tang Chen,
    Toshi Kani, and Wei Yongjun.

 9) cpufreq ondemand governor target frequency selection change to
    reduce oscillations between min and max frequencies (essentially,
    it causes the governor to choose target frequencies proportional
    to load) from Stratos Karafotis.

10) cpufreq fixes allowing sysfs attributes file permissions to be
    preserved over suspend/resume cycles Srivatsa S Bhat.

11) Removal of Device Tree parsing for CPU device nodes from multiple
    cpufreq drivers that required some changes related to
    of_get_cpu_node() to be made in a few architectures and in the
    driver core.  From Sudeep KarkadaNagesha.

12) cpufreq core fixes and cleanups related to mutual exclusion and
    driver module references from Viresh Kumar, Lukasz Majewski and
    Rafael J Wysocki.

13) Assorted cpufreq fixes and cleanups from Amit Daniel Kachhap,
    Bartlomiej Zolnierkiewicz, Hanjun Guo, Jingoo Han, Joseph Lo,
    Julia Lawall, Li Zhong, Mark Brown, Sascha Hauer, Stephen Boyd,
    Stratos Karafotis, and Viresh Kumar.

14) Fixes to prevent race conditions in coupled cpuidle from happening
    from Colin Cross.

15) cpuidle core fixes and cleanups from Daniel Lezcano and
    Tuukka Tikkanen.

16) Assorted cpuidle fixes and cleanups from Daniel Lezcano,
    Geert Uytterhoeven, Jingoo Han, Julia Lawall, Linus Walleij,
    and Sahara.

17) System sleep tracing changes from Todd E Brandt and Shuah Khan.

18) PNP subsystem conversion to using struct dev_pm_ops for power
    management from Shuah Khan.

* tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (217 commits)
  cpufreq: Don't use smp_processor_id() in preemptible context
  cpuidle: coupled: fix race condition between pokes and safe state
  cpuidle: coupled: abort idle if pokes are pending
  cpuidle: coupled: disable interrupts after entering safe state
  ACPI / hotplug: Remove containers synchronously
  driver core / ACPI: Avoid device hot remove locking issues
  cpufreq: governor: Fix typos in comments
  cpufreq: governors: Remove duplicate check of target freq in supported range
  cpufreq: Fix timer/workqueue corruption due to double queueing
  ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT
  ACPI / thermal: Add check of "_TZD" availability and evaluating result
  cpufreq: imx6q: Fix clock enable balance
  ACPI: blacklist win8 OSI for buggy laptops
  cpufreq: tegra: fix the wrong clock name
  cpuidle: Change struct menu_device field types
  cpuidle: Add a comment warning about possible overflow
  cpuidle: Fix variable domains in get_typical_interval()
  cpuidle: Fix menu_device->intervals type
  cpuidle: CodingStyle: Break up multiple assignments on single line
  cpuidle: Check called function parameter in get_typical_interval()
  ...

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Tue, 3 Sep 2013 22:50:41 +0000 (15:50 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "The first patch is to address a long standing issue where INQUIRY
  vendor + model response data was not correctly padded with ASCII
  spaces, causing MSFT and Falconstor multipath stacks to not function
  with our LUNs.

  The second -> forth patches are additional iscsi-target regression
  fixes for the post >= v3.10 iser-target changes.  The second and third
  are failure cases that have appeared during further testing, and the
  forth is only reproducible with malformed NOP packets.

  The fifth patch is a v3.11 specific regression caused by a recent
  optimization that showed up during WRITE I/O failure testing.

  I'll be sending Patch #1 and Patch #5 to Greg-KH separately for
  stable"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix se_cmd->state_list leak regression during WRITE failure
  iscsi-target: Fix potential NULL pointer in solicited NOPOUT reject
  iscsi-target: Fix iscsit_transport reference leak during NP thread reset
  iscsi-target: Fix ImmediateData=Yes failure regression in >= v3.10
  target: Fix trailing ASCII space usage in INQUIRY vendor+model

11 years agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Tue, 3 Sep 2013 22:48:06 +0000 (15:48 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull first round of SCSI updates from James Bottomley:
 "This patch set is a set of driver updates (ufs, zfcp, lpfc, mpt2/3sas,
  qla4xxx, qla2xxx [adding support for ISP8044 + other things]).

  We also have a new driver: esas2r which has a number of static checker
  problems, but which I expect to resolve over the -rc course of 3.12
  under the new driver exception.

  We also have the error return that were discussed at LSF"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (118 commits)
  [SCSI] sg: push file descriptor list locking down to per-device locking
  [SCSI] sg: checking sdp->detached isn't protected when open
  [SCSI] sg: no need sg_open_exclusive_lock
  [SCSI] sg: use rwsem to solve race during exclusive open
  [SCSI] scsi_debug: fix logical block provisioning support when unmap_alignment != 0
  [SCSI] scsi_debug: fix endianness bug in sdebug_build_parts()
  [SCSI] qla2xxx: Update the driver version to 8.06.00.08-k.
  [SCSI] qla2xxx: print MAC via %pMR.
  [SCSI] qla2xxx: Correction to message ids.
  [SCSI] qla2xxx: Correctly print out/in mailbox registers.
  [SCSI] qla2xxx: Add a new interface to update versions.
  [SCSI] qla2xxx: Move queue depth ramp down message to i/o debug level.
  [SCSI] qla2xxx: Select link initialization option bits from current operating mode.
  [SCSI] qla2xxx: Add loopback IDC-TIME-EXTEND aen handling support.
  [SCSI] qla2xxx: Set default critical temperature value in cases when ISPFX00 firmware doesn't provide it
  [SCSI] qla2xxx: QLAFX00 make over temperature AEN handling informational, add log for normal temperature AEN
  [SCSI] qla2xxx: Correct Interrupt Register offset for ISPFX00
  [SCSI] qla2xxx: Remove handling of Shutdown Requested AEN from qlafx00_process_aen().
  [SCSI] qla2xxx: Send all AENs for ISPFx00 to above layers.
  [SCSI] qla2xxx: Add changes in initialization for ISPFX00 cards with BIOS
  ...

11 years agolockref: Relax in cmpxchg loop
Luck, Tony [Tue, 3 Sep 2013 21:49:49 +0000 (14:49 -0700)]
lockref: Relax in cmpxchg loop

While we are likley to succeed and break out of this loop, it isn't
guaranteed.  We should be power and thread friendly if we do have to
go around for a second (or third, or more) attempt.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Tue, 3 Sep 2013 18:38:36 +0000 (11:38 -0700)]
Merge tag 'tty-3.12-rc1' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial driver patches from Greg KH:
 "Here's the big tty/serial driver pull request for 3.12-rc1.

  Lots of n_tty reworks to resolve some very long-standing issues,
  removing the 3-4 different locks that were taken for every character.
  This code has been beaten on for a long time in linux-next with no
  reported regressions.

  Other than that, a range of serial and tty driver updates and
  revisions.  Full details in the shortlog"

* tag 'tty-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (226 commits)
  hvc_xen: Remove unnecessary __GFP_ZERO from kzalloc
  serial: imx: initialize the local variable
  tty: ar933x_uart: add device tree support and binding documentation
  tty: ar933x_uart: allow to build the driver as a module
  ARM: dts: msm: Update uartdm compatible strings
  devicetree: serial: Document msm_serial bindings
  serial: unify serial bindings into a single dir
  serial: fsl-imx-uart: Cleanup duplicate device tree binding
  tty: ar933x_uart: use config_enabled() macro to clean up ifdefs
  tty: ar933x_uart: remove superfluous assignment of ar933x_uart_driver.nr
  tty: ar933x_uart: use the clk API to get the uart clock
  tty: serial: cpm_uart: Adding proper request of GPIO used by cpm_uart driver
  serial: sirf: fix the amount of serial ports
  serial: sirf: define macro for some magic numbers of USP
  serial: icom: move array overflow checks earlier
  TTY: amiserial, remove unnecessary platform_set_drvdata()
  serial: st-asc: remove unnecessary platform_set_drvdata()
  msm_serial: Send more than 1 character on the console w/ UARTDM
  msm_serial: Add support for non-GSBI UARTDM devices
  msm_serial: Switch clock consumer strings and simplify code
  ...

11 years agoMerge tag 'staging-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 3 Sep 2013 18:37:57 +0000 (11:37 -0700)]
Merge tag 'staging-3.12-rc1' of git://git./linux/kernel/git/gregkh/staging

Pull staging tree merge from Greg KH:
 "Here's the bit staging tree pull request for 3.12-rc1.

  Lots of staging driver updates, and fixes.  Lustre is finally enabled
  in the build, and lots of cleanup started happening in it.  There's a
  new wireless driver in here, and 2 new TTY drivers, which cause the
  overall lines added/removed to be quite large on the "added" side.

  The IIO driver updates are also coming through here, as they are tied
  to the staging iio drivers"

* tag 'staging-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (942 commits)
  staging: dwc2: make dwc2_core_params documentation more complete
  staging: dwc2: validate the value for phy_utmi_width
  staging: dwc2: interpret all hwcfg and related register at init time
  staging: dwc2: properly mask the GRXFSIZ register
  staging: dwc2: remove redundant register reads
  staging: dwc2: re-use hptxfsiz variable
  staging: dwc2: simplify debug output in dwc_hc_init
  staging: dwc2: add missing shift
  staging: dwc2: simplify register shift expressions
  staging: dwc2: only read the snpsid register once
  staging: dwc2: unshift non-bool register value constants
  staging: dwc2: fix off-by-one in check for max_packet_count parameter
  staging: dwc2: remove specific fifo size constants
  Staging:BCM:DDRInit.c:Renaming __FUNCTION__
  staging: bcm: remove Version.h file.
  staging: rtl8188eu: off by one in rtw_set_802_11_add_wep()
  staging: r8188eu: copying one byte too much
  staging: rtl8188eu: || vs && typo
  staging: r8188eu: off by one bugs
  staging: crystalhd: Resolve sparse 'different base types' warnings.
  ...

11 years agoMerge tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 3 Sep 2013 18:37:15 +0000 (11:37 -0700)]
Merge tag 'driver-core-3.12-rc1' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here's the big driver core pull request for 3.12-rc1.

  Lots of tiny changes here fixing up the way sysfs attributes are
  created, to try to make drivers simpler, and fix a whole class race
  conditions with creations of device attributes after the device was
  announced to userspace.

  All the various pieces are acked by the different subsystem
  maintainers"

* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
  firmware loader: fix pending_fw_head list corruption
  drivers/base/memory.c: introduce help macro to_memory_block
  dynamic debug: line queries failing due to uninitialized local variable
  sysfs: sysfs_create_groups returns a value.
  debugfs: provide debugfs_create_x64() when disabled
  rbd: convert bus code to use bus_groups
  firmware: dcdbas: use binary attribute groups
  sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
  driver core: add #include <linux/sysfs.h> to core files.
  HID: convert bus code to use dev_groups
  Input: serio: convert bus code to use drv_groups
  Input: gameport: convert bus code to use drv_groups
  driver core: firmware: use __ATTR_RW()
  driver core: core: use DEVICE_ATTR_RO
  driver core: bus: use DRIVER_ATTR_WO()
  driver core: create write-only attribute macros for devices and drivers
  sysfs: create __ATTR_WO()
  driver-core: platform: convert bus code to use dev_groups
  workqueue: convert bus code to use dev_groups
  MEI: convert bus code to use dev_groups
  ...

11 years agoMerge tag 'char-misc-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Tue, 3 Sep 2013 18:36:27 +0000 (11:36 -0700)]
Merge tag 'char-misc-3.12-rc1' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc patches from Greg KH:
 "Here is the big char/misc driver pull request for 3.12-rc1

  Lots of driver updates all over the char/misc tree, full details in
  the shortlog"

* tag 'char-misc-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (62 commits)
  drivers: uio: Kconfig: add MMU dependancy for UIO
  drivers: uio: Add driver for Humusoft MF624 DAQ PCI card
  drivers: uio_pdrv_genirq: use dev_get_platdata()
  drivers: uio_pruss: use dev_get_platdata()
  drivers: uio_dmem_genirq: use dev_get_platdata()
  drivers: parport: Kconfig: exclude h8300 for PARPORT_PC
  drivers: misc: ti-st: fix potential race if st_kim_start fails
  Drivers: hv: vmbus: Do not attempt to negoatiate a new version prematurely
  misc: vmw_balloon: Remove braces to fix build for clang.
  Drivers: hv: vmbus: Fix a bug in the handling of channel offers
  vme: vme_ca91cx42.c: fix to pass correct device identity to free_irq()
  VMCI: Add support for virtual IOMMU
  VMCI: Remove non-blocking/pinned queuepair support
  uio: uio_pruss: remove unnecessary platform_set_drvdata()
  parport: amiga: remove unnecessary platform_set_drvdata()
  vme: vme_vmivme7805.c: add missing __iomem annotation
  vme: vme_ca91cx42.c: add missing __iomem annotation
  vme: vme_tsi148.c: add missing __iomem annotation
  drivers/misc/hpilo: Correct panic when an AUX iLO is detected
  uio: drop unused vma_count member in uio_device struct
  ...

11 years agoMerge tag 'usb-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Tue, 3 Sep 2013 18:35:32 +0000 (11:35 -0700)]
Merge tag 'usb-3.12-rc1' of git://git./linux/kernel/git/gregkh/usb

Pull USB patches from Greg KH:
 "Here's the big USB driver pull request for 3.12-rc1

  Lots of USB driver fixes and updates.  Nothing major, just the normal
  xhci, gadget, and other driver changes.  Full details in the shortlog"

* tag 'usb-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (352 commits)
  usbcore: fix incorrect type in assignment in descriptors_changed()
  usbcore: compare and release one bos descriptor in usb_reset_and_verify_device()
  ehci: remove debugging statement with ehci statistics in ehci_stop()
  ehci: remove duplicate debug_async_open() prototype in ehci-dbg.c
  ehci: enable debugging code when CONFIG_DYNAMIC_DEBUG is set
  ehci: remove ehci_vdbg() verbose debugging statements
  Documentation sysfs-bus-usb: Document which files are used by libusb
  Documentation sysfs-bus-usb: Document the speed file used by libusb
  Documentation sysfs-bus-usb: Move files with known users to stable
  USB: fix build error when CONFIG_PM_SLEEP isn't enabled
  usb: r8a66597-hcd: use platform_{get,set}_drvdata()
  usb: phy-tegra-usb: use platform_{get,set}_drvdata()
  usb: acm gadget: Null termintate strings table
  dma: cppi41: off by one in desc_to_chan()
  xhci: Fix warning introduced by disabling runtime PM.
  dev-core: fix build break when DEBUG is enabled
  USB: OHCI: Allow runtime PM without system sleep
  usb: ohci-at91: remove unnecessary dev_set_drvdata()
  usb: renesas_usbhs: use platform_{get,set}_drvdata()
  usb: fotg210-udc: use platform_{get,set}_drvdata()
  ...

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Tue, 3 Sep 2013 17:46:26 +0000 (10:46 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull first batch of s390 updates from Martin Schwidefsky:
 "The most interesting change is that Martin converted s390 to generic
  hardirqs.  Which means that all current architectures have been
  converted and that CONFIG_GENERIC_HARDIRQS can be removed.  Martin
  prepared a patch for that already (see genirq branch), but the best
  time to merge that is probably at the end of the merge window / begin
  of -rc1.

  Another patch converts s390 to software referenced bits instead of
  relying on the reference bit in the storage key.  Therefore s390
  doesn't use storage keys anymore, except for kvm.

  Besides that we have improvements, cleanups and fixes in PCI, DASD and
  all over the place."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (32 commits)
  s390/pci: use virtual memory for iommu bitmap
  s390/cio: fix unlocked access of global bitmap
  s390/pci: update function handle after resume from hibernate
  s390/pci: try harder to modify a function
  s390/pci: split lpf
  s390/hibernate: add early resume function
  s390/pci: add recover sysfs knob
  s390/pci: use claim_resource
  s390/pci/hotplug: convert to be builtin only
  s390/mm: implement software referenced bits
  s390/dasd: fix statistics for recovered requests
  s390/tx: allow program interruption filtering in user space
  s390/pgtable: fix mprotect for single-threaded KVM guests
  s390/time: return with irqs disabled from psw_idle
  s390/kprobes: add support for compare and branch instructions
  s390/switch_to: fix save_access_regs() / restore_access_regs()
  s390/bitops: fix inline assembly constraints
  s390/dasd: enable raw_track_access reads without direct I/O
  s390/mm: introduce ptep_flush_lazy helper
  s390/time: clock comparator revalidation
  ...

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Tue, 3 Sep 2013 17:45:29 +0000 (10:45 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:
 "Summary:
   - Kill harmless warning messages when running a multi-platform kernel
     on Atari
   - Correct virt/phys mixups that didn't actually hurt due to identity
     mappings"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/atari: ARAnyM - Always use physical addresses in NatFeat calls
  m68k: Ignore disabled HSYNC interrupt on Atari for irqs_disabled()

11 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Tue, 3 Sep 2013 17:43:35 +0000 (10:43 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 - new driver for HTU21D (humidity sensor)
 - add support for Fam16h (Kabini) to k10temp
 - add support for NCT6102D/6106D and NCT6791D to nct6775 driver
 - add support for ADS1115 to ads1015 driver
 - add support for hibernate to w83627ehf and nct6775 drivers
 - some minor cleanups

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (htu21) Add Measurement Specialties HTU21D support
  hwmon: Change my email address.
  hwmon: (k10temp) Add support for Fam16h (Kabini)
  hwmon: (adt7462) ADT7462_REG_VOLT_MAX() should return 0
  hwmon: (ads1015) Add support for ADS1115
  hwmon: (w83627ehf) Add support for hibernate
  hwmon: (nct6775) Add support for hibernate
  hwmon: use dev_get_platdata()
  hwmon: (nct6775) Fix size of data->temp array
  hwmon: (nct6775) Avoid using device platform data outside probe function
  hwmon: (nct6775) Add support for NCT6791D
  hwmon: (nct6775) Add support for beep attributes
  hwmon: (nct6775) Add support for critical low/high temperature limits on NCT6106
  hwmon: (nct6775) Add support for NCT6102D/6106D
  hwmon: (nct6775) Support two SuperIO chips in the same system
  hwmon: (nct6775) Allocate attributes dynamically from templates
  hwmon: (coretemp) Atom CPUs don't support TjMax; no warning needed

11 years agoipc/msg.c: Fix lost wakeup in msgsnd().
Manfred Spraul [Tue, 3 Sep 2013 14:00:08 +0000 (16:00 +0200)]
ipc/msg.c: Fix lost wakeup in msgsnd().

The check if the queue is full and adding current to the wait queue of
pending msgsnd() operations (ss_add()) must be atomic.

Otherwise:
 - the thread that performs msgsnd() finds a full queue and decides to
   sleep.
 - the thread that performs msgrcv() first reads all messages from the
   queue and then sleeps, because the queue is empty.
 - the msgrcv() calls do not perform any wakeups, because the msgsnd()
   task has not yet called ss_add().
 - then the msgsnd()-thread first calls ss_add() and then sleeps.

Net result: msgsnd() and msgrcv() both sleep forever.

Observed with msgctl08 from ltp with a preemptible kernel.

Fix: Call ipc_lock_object() before performing the check.

The patch also moves security_msg_queue_msgsnd() under ipc_lock_object:
 - msgctl(IPC_SET) explicitely mentions that it tries to expunge any
   pending operations that are not allowed anymore with the new
   permissions.  If security_msg_queue_msgsnd() is called without locks,
   then there might be races.
 - it makes the patch much simpler.

Reported-and-tested-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: stable@vger.kernel.org # for 3.11
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'regulator-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Tue, 3 Sep 2013 17:09:29 +0000 (10:09 -0700)]
Merge tag 'regulator-v3.12' of git://git./linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "Not much exciting going on with the regulator API this time around,
  lots of driver fixes and enhancements - the main thing is the addition
  of a new API to help make the stubbing code do the right thing for
  missing regulator mappings.

  Highlights:

   - A new regulator_get_optional() API call for regulators that can be
     absent in normal operation.  This currently does nothing but will
     be used to improve the stubbing code for unspecified regulators,
     helping avoid some of the issues we've seen with adding new
     regulator support.
   - Helpers for devices with multiple linear ranges of voltages in the
     same regulator.
   - Moved the helpers into a separate file since core.c is getting
     rather large.
   - New drivers for Dialog DA9210 and DA9063, Freescale pfuze100 and
     Marvell 88pm800"

* tag 'regulator-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (70 commits)
  regulator: da9063: Statize da9063_ldo_lim_event
  regulator: lp872x: Make REGULATOR_LP872X depend on I2C rather than I2C=y
  regulator: tps65217: Convert to use linear ranges
  regulator: da9063: Use IS_ERR to check return value of regulator_register()
  regulator: da9063: Optimize da9063_set_current_limit implementation
  regulator: build: Allow most regulators to be built as modules
  regulator: Add devm_regulator_get_exclusive()
  regulator: da9063: Add Dialog DA9063 voltage regulators support.
  regulator: ti-abb: simplify platform_get_resource_byname/devm_ioremap_resource
  hwmon: (sht15) Use devm_regulator_get_optional()
  regulator: core: Use bool for exclusivitity flag
  regulator: 88pm800: forever loop in pm800_regulator_probe()
  cpufreq: cpufreq-cpu0: Use devm_regulator_get_optional()
  regulator: da9210: Remove redundant MODULE_ALIAS
  regulator: 88pm800: Fix checking whether num_regulator is valid
  regulator: s2mps11: Fix setting ramp_delay
  regulator: s2mps11: Fix wrong arguments for regmap_update_bits() call
  regulator: palmas: Update the DT binding doc for smps10 out1 and out2
  regulator: palmas: model SMPS10 as two regulators
  regulator: core: Move list_voltage_{linear,linear_range,table} to helpers.c
  ...

11 years agoMerge tag 'spi-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Tue, 3 Sep 2013 17:08:25 +0000 (10:08 -0700)]
Merge tag 'spi-v3.12' of git://git./linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Business as usual for SPI - some new drivers, lots of fixes and
  updates to existing drivers plus some new framework features.  Notable
  changes are:

   - Support for dual and quad data lines, commonly used by flash chips
     to improve performance, from Wang Yuhang.
   - Factored out a common pattern for runtime PM implementation into
     the core saving a bunch of code.
   - A particularly nice set of updates to the ep93xx driver from
     H Hartley Sweeten, modernising it and reducing the code size a lot.
   - New drivers for Blackfin v3, EFM32, Freescale DSPI and TI QSPI"

* tag 'spi-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (133 commits)
  spi/qspi: fix missing unlock on error in ti_qspi_start_transfer_one()
  spi: quad: fix the name of DT property
  spi: core: Fix spi_register_master error handling
  spi: efm32: Fix build error
  spi: altera: Use DIV_ROUND_UP to calculate hw->bytes_per_word
  spi: rspi: Add spi_master_get() call to prevent use after free
  spi: quad: Make DT properties optional
  spi: quad: Fix missing return
  spi: Use dev_get_drvdata at appropriate places
  spi: use dev_get_platdata()
  spi: nuc900: Fix mode_bits setting
  spi: simplify devm_request_mem_region/devm_ioremap
  spi: altera: Simplify altera_spi_txrx implementation for noirq case
  spi: spi-rspi: fix inconsistent spin_lock_irqsave
  spi/qspi: Add compatible string for am4372.
  spi/qspi: Fix device table entry
  spi/sirf: fix the misunderstanding about len of spi_transfer
  spi/qspi: Add dual/quad spi read support
  spi: sirf: fix error return code in spi_sirfsoc_probe()
  spi: bcm2835: Add spi_master_get() call to prevent use after free
  ...

11 years agoMerge tag 'regmap-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Tue, 3 Sep 2013 17:07:40 +0000 (10:07 -0700)]
Merge tag 'regmap-v3.12' of git://git./linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "A quiet release for regmap, some cleanups, fixes and:

   - Improved node coalescing for rbtree, reducing memory usage and
     improving performance during syncs.
   - Support for registering multiple register patches.
   - A quirk for handling interrupts that need to be clear when masked
     in regmap-irq"

* tag 'regmap-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: rbtree: Make cache_present bitmap per node
  regmap: rbtree: Reduce number of nodes, take 2
  regmap: rbtree: Simplify adjacent node look-up
  regmap: debugfs: Fix continued read from registers file
  regcache-rbtree: Fix reg_stride != 1
  regmap: Allow multiple patches to be registered
  regmap: regcache: allow read-only regs to be cached
  regmap: fix regcache_reg_present() for empty cache
  regmap: core: allow a virtual range to cover its own data window
  regmap: irq: document mask/wake_invert flags
  regmap: irq: make flags bool and put them in a bitfield
  regmap: irq: Allow to acknowledge masked interrupts during initialization
  regmap: Provide __acquires/__releases annotations

11 years agoMerge branch 'lockref' (locked reference counts)
Linus Torvalds [Tue, 3 Sep 2013 15:08:21 +0000 (08:08 -0700)]
Merge branch 'lockref' (locked reference counts)

Merge lockref infrastructure code by me and Waiman Long.

I already merged some of the preparatory patches that didn't actually do
any semantic changes earlier, but this merges the actual _reason_ for
those preparatory patches.

The "lockref" structure is a combination "spinlock and reference count"
that allows optimized reference count accesses.  In particular, it
guarantees that the reference count will be updated AS IF the spinlock
was held, but using atomic accesses that cover both the reference count
and the spinlock words, we can often do the update without actually
having to take the lock.

This allows us to avoid the nastiest cases of spinlock contention on
large machines under heavy pathname lookup loads.  When updating the
dentry reference counts on a large system, we'll still end up with the
cache line bouncing around, but that's much less noticeable than
actually having to spin waiting for the lock.

* lockref:
  lockref: implement lockless reference count updates using cmpxchg()
  lockref: uninline lockref helper functions
  vfs: reimplement d_rcu_to_refcount() using lockref_get_or_lock()
  vfs: use lockref_get_not_zero() for optimistic lockless dget_parent()
  lockref: add 'lockref_get_or_lock() helper

11 years ago[SCSI] sg: push file descriptor list locking down to per-device locking
Vaughan Cao [Thu, 29 Aug 2013 02:00:39 +0000 (10:00 +0800)]
[SCSI] sg: push file descriptor list locking down to per-device locking

Push file descriptor list locking down to per-device locking. Let sg_index_lock
only protect device lookup.
sdp->detached is also set and checked with this lock held.

Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] sg: checking sdp->detached isn't protected when open
Vaughan Cao [Thu, 29 Aug 2013 02:00:38 +0000 (10:00 +0800)]
[SCSI] sg: checking sdp->detached isn't protected when open

@detached is set under the protection of sg_index_lock. Without getting the
lock, new sfp will be added during sg removal and there is no chance for it
to be picked out. So check with sg_index_lock held in sg_add_sfp().

Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] sg: no need sg_open_exclusive_lock
Vaughan Cao [Thu, 29 Aug 2013 02:00:37 +0000 (10:00 +0800)]
[SCSI] sg: no need sg_open_exclusive_lock

Open exclusive check is protected by o_sem, no need sg_open_exclusive_lock.
@exclude is used to record which type of rwsem we are holding.

Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] sg: use rwsem to solve race during exclusive open
Vaughan Cao [Thu, 29 Aug 2013 02:00:36 +0000 (10:00 +0800)]
[SCSI] sg: use rwsem to solve race during exclusive open

A race condition may happen if two threads are both trying to open the same sg
with O_EXCL simultaneously. It's possible that they both find fsds list is
empty and get_exclude(sdp) returns 0, then they both call set_exclude() and
break out from wait_event_interruptible and resume open.

Now use rwsem to protect this process. Exclusive open gets write lock and
others get read lock. The lock will be held until file descriptor is closed.
This also leads 'exclude' only a status rather than a check mark.

Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] scsi_debug: fix logical block provisioning support when unmap_alignment != 0
Akinobu Mita [Mon, 26 Aug 2013 13:08:41 +0000 (22:08 +0900)]
[SCSI] scsi_debug: fix logical block provisioning support when unmap_alignment != 0

Commit b90ebc3d5c41c9164ae04efd2e4f8204c2a186f1 ("[SCSI] scsi_debug:
fix logical block provisioning support") fixed several issues with
logical block provisioning support, but it still doesn't properly fix
the cases when unmap_alignment > 0.

For example, load scsi_debug module with the following module parameters
and make all blocks mapped by filling the storage with zero.

        # modprobe scsi_debug lbpu=1 unmap_alignment=1 unmap_granularity=4
        # dd if=/dev/zero of=$DEV

Then, try to unmap the first unmappable blocks at lba=1, but GET LBA STATUS
unexpectedly reports that the last UNMAP has done nothing.

        # sg_unmap --lba=1 --num=4 $DEV
        # sg_get_lba_status --lba=1 $DEV
        descriptor LBA: 0x0000000000000001  blocks: 16383  mapped

The problem is in map_index_to_lba(), which should return the first
LBA which is corresponding to a given index of provisioning map
(map_storep).

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] scsi_debug: fix endianness bug in sdebug_build_parts()
Akinobu Mita [Mon, 26 Aug 2013 13:08:40 +0000 (22:08 +0900)]
[SCSI] scsi_debug: fix endianness bug in sdebug_build_parts()

With module parameter num_parts > 0, partition table is built on the
ramdisk storage when loading the driver.  Unfortunately, there is an
endianness bug in sdebug_build_parts().  So the partition table is not
correctly initialized on big-endian systems.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Tested-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Update the driver version to 8.06.00.08-k.
Saurav Kashyap [Tue, 27 Aug 2013 05:37:55 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Update the driver version to 8.06.00.08-k.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: print MAC via %pMR.
Andy Shevchenko [Tue, 27 Aug 2013 05:37:54 +0000 (01:37 -0400)]
[SCSI] qla2xxx: print MAC via %pMR.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Correction to message ids.
Saurav Kashyap [Tue, 27 Aug 2013 05:37:53 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Correction to message ids.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Correctly print out/in mailbox registers.
Joe Carnuccio [Fri, 23 Aug 2013 14:25:37 +0000 (07:25 -0700)]
[SCSI] qla2xxx: Correctly print out/in mailbox registers.

At mailbox/buffer debug level, print the correct values of the
outgoing and incoming mailbox registers.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add a new interface to update versions.
Sawan Chandak [Tue, 27 Aug 2013 05:37:51 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add a new interface to update versions.

On any Adapter when we flash through FC/FCoE without card reset option it still
shows the Running FW version in Flashed FW version. This new interface will be
used by API to instruct the driver to update its cache versions.

Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Move queue depth ramp down message to i/o debug level.
Chad Dupuis [Tue, 27 Aug 2013 05:37:50 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Move queue depth ramp down message to i/o debug level.

Unless there is a need to observe them, the queue depth ramp up/down messages
are a nuisance and may cause the system to become unresponsive so move it a
non-default logging level.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Select link initialization option bits from current operating mode.
Joe Carnuccio [Tue, 27 Aug 2013 05:37:49 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Select link initialization option bits from current operating mode.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add loopback IDC-TIME-EXTEND aen handling support.
Santosh Vernekar [Tue, 27 Aug 2013 05:37:48 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add loopback IDC-TIME-EXTEND aen handling support.

Earlier IDC-TIME-EXTEND aen was a nop and ignored by driver.
We now have to handle the aen so that other protocol drivers can use time
extension during some loopback operations.

Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Set default critical temperature value in cases when ISPFX00 firmware...
Armen Baloyan [Tue, 27 Aug 2013 05:37:47 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Set default critical temperature value in cases when ISPFX00 firmware doesn't provide it

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: QLAFX00 make over temperature AEN handling informational, add log...
Armen Baloyan [Tue, 27 Aug 2013 05:37:46 +0000 (01:37 -0400)]
[SCSI] qla2xxx: QLAFX00 make over temperature AEN handling informational, add log for normal temperature AEN

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Correct Interrupt Register offset for ISPFX00
Armen Baloyan [Tue, 27 Aug 2013 05:37:45 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Correct Interrupt Register offset for ISPFX00

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Remove handling of Shutdown Requested AEN from qlafx00_process_aen().
Armen Baloyan [Tue, 27 Aug 2013 05:37:44 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Remove handling of Shutdown Requested AEN from qlafx00_process_aen().

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Send all AENs for ISPFx00 to above layers.
Armen Baloyan [Tue, 27 Aug 2013 05:37:43 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Send all AENs for ISPFx00 to above layers.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add changes in initialization for ISPFX00 cards with BIOS
Armen Baloyan [Tue, 27 Aug 2013 05:37:42 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add changes in initialization for ISPFX00 cards with BIOS

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add changes to support extended IOs for ISPFX00
Armen Baloyan [Tue, 27 Aug 2013 05:37:41 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add changes to support extended IOs for ISPFX00

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add missing FCP statistics to sysfs interface.
Joe Carnuccio [Tue, 27 Aug 2013 05:37:40 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add missing FCP statistics to sysfs interface.

Add the missing FCP statistics to sysfs.
Add reset FCP statistics functionality via sysfs.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Make log message that prints when a completion status requires a...
Chad Dupuis [Tue, 27 Aug 2013 05:37:39 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Make log message that prints when a completion status requires a port down more readable.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add critical temperature handling for ISPFX00.
Armen Baloyan [Tue, 27 Aug 2013 05:37:38 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add critical temperature handling for ISPFX00.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Notify ISPFX00 firmware when driver is unloaded or system is shut...
Armen Baloyan [Tue, 27 Aug 2013 05:37:37 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Notify ISPFX00 firmware when driver is unloaded or system is shut down.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Reconfigure thermal temperature.
Joe Carnuccio [Tue, 27 Aug 2013 05:37:36 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Reconfigure thermal temperature.

For supported ISPS, Read asic temperature by calling the
GET PARAMS (type C) mailbox command.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add setting of driver version string for vendor application.
Joe Carnuccio [Tue, 27 Aug 2013 05:37:35 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add setting of driver version string for vendor application.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Remove QL_DEBUG_LEVEL_17 defines from qla_nx.c.
Chad Dupuis [Tue, 27 Aug 2013 05:37:34 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Remove QL_DEBUG_LEVEL_17 defines from qla_nx.c.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add ISPFX00 specific bus reset routine.
Armen Baloyan [Tue, 27 Aug 2013 05:37:33 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add ISPFX00 specific bus reset routine.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Perform warm reset every 2 minutes if firmware load fails for ISPFX00.
Armen Baloyan [Tue, 27 Aug 2013 05:37:32 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Perform warm reset every 2 minutes if firmware load fails for ISPFX00.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Set factory reset recovery timeout to 10 min. for ISPFX00.
Armen Baloyan [Tue, 27 Aug 2013 05:37:31 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Set factory reset recovery timeout to 10 min. for ISPFX00.

Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Correct multiqueue offset calculations.
Andrew Vasquez [Tue, 27 Aug 2013 05:37:30 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Correct multiqueue offset calculations.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Fix incorrect test after list_for_each_entry() exits.
Joe Carnuccio [Tue, 27 Aug 2013 05:37:29 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Fix incorrect test after list_for_each_entry() exits.

list_for_each_entry() never leaves the iterator pointing to null.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Add support for ISP8044.
Atul Deshmukh [Tue, 27 Aug 2013 05:37:28 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Add support for ISP8044.

[jejb: checkpatch fixes]
Signed-off-by: Atul Deshmukh <atul.deshmukh@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla2xxx: Print some variables to hexadecimal string via %*phN format
Oleksandr Khoshaba [Tue, 27 Aug 2013 05:37:27 +0000 (01:37 -0400)]
[SCSI] qla2xxx: Print some variables to hexadecimal string via %*phN format

The patch changes a specifier used to output some variables. Instead of using
stack for each byte the '%*ph[CN]' allows to take a one pointer and prints
entire buffer as a hexadecimal string with the separator ':' or ''.

Signed-off-by: Oleksandr Khoshaba <Oleksandr.Khoshaba@gmail.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt3sas: Remove phys on topology change
Jan Vesely [Thu, 1 Aug 2013 10:01:31 +0000 (12:01 +0200)]
[SCSI] mpt3sas: Remove phys on topology change

Signed-off-by: Jan Vesely <jvesely@redhat.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Remove phys on topology change.
Jan Vesely [Thu, 1 Aug 2013 10:01:30 +0000 (12:01 +0200)]
[SCSI] mpt2sas: Remove phys on topology change.

Signed-off-by: Jan Vesely <jvesely@redhat.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] bfa: firmware update to 3.2.1.1
Rasesh Mody [Fri, 23 Aug 2013 23:05:57 +0000 (16:05 -0700)]
[SCSI] bfa: firmware update to 3.2.1.1

This patch updates the firmware to address the thermal notification issue

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver
Bradley Grove [Fri, 23 Aug 2013 14:35:45 +0000 (10:35 -0400)]
[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver

This is a new driver for ATTO Technology's ExpressSAS series of hardware RAID
adapters.  It supports the following adapters:

    - ExpressSAS R60F
    - ExpressSAS R680
    - ExpressSAS R608
    - ExpressSAS R644

Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] eata_pio: off by one in eata_pio_detect()
Dan Carpenter [Fri, 23 Aug 2013 12:11:31 +0000 (15:11 +0300)]
[SCSI] eata_pio: off by one in eata_pio_detect()

Smatch complains that the reg_IRQ[] array only has MAXIRQ (16) elements
so we are one space beyond the end of the array here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Update driver version to 5.04.00-k1
Vikas Chaudhary [Fri, 23 Aug 2013 07:40:21 +0000 (03:40 -0400)]
[SCSI] qla4xxx: Update driver version to 5.04.00-k1

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Return error if minidump data collection fails
Vikas Chaudhary [Fri, 23 Aug 2013 07:40:20 +0000 (03:40 -0400)]
[SCSI] qla4xxx: Return error if minidump data collection fails

Return error from function qla4_8xxx_collect_md_data()
if minidump data collection fails.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Fix the minidump data collection check in for loop
Santosh Vernekar [Fri, 23 Aug 2013 07:40:19 +0000 (03:40 -0400)]
[SCSI] qla4xxx: Fix the minidump data collection check in for loop

Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Add pex-dma support for capturing minidump
Santosh Vernekar [Fri, 23 Aug 2013 07:40:18 +0000 (03:40 -0400)]
[SCSI] qla4xxx: Add pex-dma support for capturing minidump

Add pex-dma support for ISP8324 and ISP8042 to improve
the minidump capture time.

Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] zfcp: enable FCP hardware data router by default
Steffen Maier [Thu, 22 Aug 2013 15:49:34 +0000 (17:49 +0200)]
[SCSI] zfcp: enable FCP hardware data router by default

Enabling the data router support by default
can increase performance in certain situations.
It is safe to do so and tolerated in LPAR and under z/VM
in case there is no data router support in that environment.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] zfcp: dead code removal
Martin Peschke [Thu, 22 Aug 2013 15:49:33 +0000 (17:49 +0200)]
[SCSI] zfcp: dead code removal

Get rid of unused function zfcp_fsf_get_req and corresponding
prototype definition.

Commit a54ca0f62f953898b05549391ac2a8a4dad6482b in v2.6.28
"[SCSI] zfcp: Redesign of the debug tracing for HBA records."
accidentally introduced this code which was dead in the first place.

Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] zfcp: cleanup use of obsolete strict_strto* functions
Martin Peschke [Thu, 22 Aug 2013 15:49:32 +0000 (17:49 +0200)]
[SCSI] zfcp: cleanup use of obsolete strict_strto* functions

strict_strtoul and friends are obsolete. Use kstrtoul functions
instead.

Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] zfcp: consistently use appropriate SBAL flag definitions
Martin Peschke [Thu, 22 Aug 2013 15:49:31 +0000 (17:49 +0200)]
[SCSI] zfcp: consistently use appropriate SBAL flag definitions

minor cleanup for status read request

Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt3sas: Added a driver module parameter max_msix_vectors
Sreekanth Reddy [Wed, 14 Aug 2013 12:53:20 +0000 (18:23 +0530)]
[SCSI] mpt3sas: Added a driver module parameter max_msix_vectors

Added a driver module parameter max_msix_vectors. Using this module parameter
the maximum number of MSI-X vectors could be set.

The number of MSI-X vectors used would be the minimum of MSI-X vectors
supported by the HBA, the number of CPU cores and the value set to
max_msix_vectors module parameter.

The default value of this module parameter is set to 8. The default value of
this parameter is set to 8 inorder to reduce the amount of memory required for
Reply Descriptor Post queue.  This is because with the higher MSI-X vectors,
some times kernel is not able to allocate the requested amount of memory and
crash is observed. To overcome this problem, the default value is set to 8.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Update driver version to 5.04.00-k0
Vikas Chaudhary [Fri, 16 Aug 2013 11:03:05 +0000 (07:03 -0400)]
[SCSI] qla4xxx: Update driver version to 5.04.00-k0

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Update Copyright header
Vikas Chaudhary [Fri, 16 Aug 2013 11:03:04 +0000 (07:03 -0400)]
[SCSI] qla4xxx: Update Copyright header

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Implementation of ACB configuration during Loopback for ISP8042
Nilesh Javali [Fri, 16 Aug 2013 11:03:03 +0000 (07:03 -0400)]
[SCSI] qla4xxx: Implementation of ACB configuration during Loopback for ISP8042

While loopback diagnostic is in progress, disable the ACB which resets
all the active connections to target. Disable ACB would filter out all
the DHCP multicast and broadcast packets which otherwise cause the
diagnostic test to take longer time to complete or failures in some
other cases.

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] qla4xxx: Added support for ISP8042
Vikas Chaudhary [Fri, 16 Aug 2013 11:03:02 +0000 (07:03 -0400)]
[SCSI] qla4xxx: Added support for ISP8042

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Bump driver version to v16.100.00.00
Sreekanth Reddy [Thu, 25 Jul 2013 06:03:40 +0000 (11:33 +0530)]
[SCSI] mpt2sas: Bump driver version to v16.100.00.00

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Fix for kernel panic when driver loads with HBA connected to non...
Sreekanth Reddy [Thu, 25 Jul 2013 06:02:51 +0000 (11:32 +0530)]
[SCSI] mpt2sas: Fix for kernel panic when driver loads with HBA connected to non LUN 0 configured expander

With some enclosures when LUN 0 is not created but LUN 1 or LUN X is created
then SCSI scan procedure calls target_alloc, slave_alloc call back functions
for LUN 0 and slave_destory() for same LUN 0.

In these kind of cases within slave_destroy, pointer to scsi_target in
_sas_device structure is set to NULL, following which when slave_alloc for
LUN 1 is called then starget would not be set properly for this LUN.
So, scsi_target pointer pointing to NULL value would lead to a crash later
in the discovery procedure.

To solve this issue set the sas_device's scsi_target pointer to scsi_device's
scsi_target if it is NULL earlier in slave_alloc callback function.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: when Async scanning is enabled then while scanning, devices are remov...
Sreekanth Reddy [Thu, 25 Jul 2013 06:01:12 +0000 (11:31 +0530)]
[SCSI] mpt2sas: when Async scanning is enabled then while scanning, devices are removed but their transport layer entries are not removed

When Async scanning mode is enabled and device scanning is in progress then
devices should not be removed. But in actuality, devices are removed but
their transport layer entries are not removed. This causes error to add
the same device to the transport layer after host reset or diagnostic
reset.

So, in this patch, modified the code in such a way that device is not removed
when Async scanning mode is enabled and device scanning is in progress.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Infinite loop can occur if MPI2_IOCSTATUS_CONFIG_INVALID_PAGE is...
Sreekanth Reddy [Thu, 25 Jul 2013 05:59:45 +0000 (11:29 +0530)]
[SCSI] mpt2sas: Infinite loop can occur if MPI2_IOCSTATUS_CONFIG_INVALID_PAGE is not returned

Infinite loop can occur if IOCStatus is not equal to
MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value in the while loops in functions
_scsih_search_responding_sas_devices,
_scsih_search_responding_raid_devices and
_scsih_search_responding_expanders

So, Instead of checking for MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value,
in this patch code is modified to check for IOCStatus not equals to
MPI2_IOCSTATUS_SUCCESS to break the while loop.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: The copyright in driver sources is updated for the year 2013
Sreekanth Reddy [Thu, 25 Jul 2013 05:58:01 +0000 (11:28 +0530)]
[SCSI] mpt2sas: The copyright in driver sources is updated for the year 2013

The copyright in driver sources is updated for the year 2013.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: MPI2 Rev X (2.00.16) specifications
Sreekanth Reddy [Thu, 25 Jul 2013 05:56:56 +0000 (11:26 +0530)]
[SCSI] mpt2sas: MPI2 Rev X (2.00.16) specifications

Change set in MPI2 Rev x specification and 2.00.26 header files

1. Added two new AbortType values for TargetModeAbort Request: one to abort
   all IOs from a single initiator and other to abort only Command IUs.

2. Added Use Slot Information during Port Enable Event Reply flag to the Flags
   field of Manufacturing Page 7.

3. Added OEM Identifier to BiosOptions bits of BIOS Page 1.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Change in MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED notification...
Sreekanth Reddy [Thu, 25 Jul 2013 05:55:57 +0000 (11:25 +0530)]
[SCSI] mpt2sas: Change in MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED notification methodology

The intent of this patch is to perform a graceful shutdown of target drives even if
volume doesn't exits. Changes done in this patch

1. Removed the check for the presence of volumes before sending down
   MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED. Therefore, this RAID action
   would be sent if the card is IR Firmware.

2. The MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED is sent even when the
   system undergoes suspend (in addition to remove/shutdown which was already
   present)

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years ago[SCSI] mpt2sas: Null pointer deference possibility in mpt2sas_ctl_event_callback...
Sreekanth Reddy [Thu, 25 Jul 2013 05:54:35 +0000 (11:24 +0530)]
[SCSI] mpt2sas: Null pointer deference possibility in mpt2sas_ctl_event_callback function

Added a check to identify if mpi_reply is NULL in mpt2sas_ctl_event_callback()
and return without proceeding if it is the case.

Also modified the following functions to return void instead of 0 or 1
as returning those values from events perspective doesn't make sense.
* _base_async_event()
* mpt2sas_ctl_event_callback()
* mpt2sas_scsih_event_callback()

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years agoLinux 3.11
Linus Torvalds [Mon, 2 Sep 2013 20:46:10 +0000 (13:46 -0700)]
Linux 3.11

11 years agolockref: implement lockless reference count updates using cmpxchg()
Linus Torvalds [Mon, 2 Sep 2013 19:12:15 +0000 (12:12 -0700)]
lockref: implement lockless reference count updates using cmpxchg()

Instead of taking the spinlock, the lockless versions atomically check
that the lock is not taken, and do the reference count update using a
cmpxchg() loop.  This is semantically identical to doing the reference
count update protected by the lock, but avoids the "wait for lock"
contention that you get when accesses to the reference count are
contended.

Note that a "lockref" is absolutely _not_ equivalent to an atomic_t.
Even when the lockref reference counts are updated atomically with
cmpxchg, the fact that they also verify the state of the spinlock means
that the lockless updates can never happen while somebody else holds the
spinlock.

So while "lockref_put_or_lock()" looks a lot like just another name for
"atomic_dec_and_lock()", and both optimize to lockless updates, they are
fundamentally different: the decrement done by atomic_dec_and_lock() is
truly independent of any lock (as long as it doesn't decrement to zero),
so a locked region can still see the count change.

The lockref structure, in contrast, really is a *locked* reference
count.  If you hold the spinlock, the reference count will be stable and
you can modify the reference count without using atomics, because even
the lockless updates will see and respect the state of the lock.

In order to enable the cmpxchg lockless code, the architecture needs to
do three things:

 (1) Make sure that the "arch_spinlock_t" and an "unsigned int" can fit
     in an aligned u64, and have a "cmpxchg()" implementation that works
     on such a u64 data type.

 (2) define a helper function to test for a spinlock being unlocked
     ("arch_spin_value_unlocked()")

 (3) select the "ARCH_USE_CMPXCHG_LOCKREF" config variable in its
     Kconfig file.

This enables it for x86-64 (but not 32-bit, we'd need to make sure
cmpxchg() turns into the proper cmpxchg8b in order to enable it for
32-bit mode).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agolockref: uninline lockref helper functions
Linus Torvalds [Mon, 2 Sep 2013 18:58:20 +0000 (11:58 -0700)]
lockref: uninline lockref helper functions

They aren't very good to inline, since they already call external
functions (the spinlock code), and we're going to create rather more
complicated versions of them that can do the reference count updates
locklessly.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovfs: reimplement d_rcu_to_refcount() using lockref_get_or_lock()
Linus Torvalds [Mon, 2 Sep 2013 18:38:06 +0000 (11:38 -0700)]
vfs: reimplement d_rcu_to_refcount() using lockref_get_or_lock()

This moves __d_rcu_to_refcount() from <linux/dcache.h> into fs/namei.c
and re-implements it using the lockref infrastructure instead.  It also
adds a lot of comments about what is actually going on, because turning
a dentry that was looked up using RCU into a long-lived reference
counted entry is one of the more subtle parts of the rcu walk.

We also used to be _particularly_ subtle in unlazy_walk() where we
re-validate both the dentry and its parent using the same sequence
count.  We used to do it by nesting the locks and then verifying the
sequence count just once.

That was silly, because nested locking is expensive, but the sequence
count check is not.  So this just re-validates the dentry and the parent
separately, avoiding the nested locking, and making the lockref lookup
possible.

Acked-by: Waiman Long <waiman.long@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovfs: use lockref_get_not_zero() for optimistic lockless dget_parent()
Waiman Long [Mon, 2 Sep 2013 18:29:22 +0000 (11:29 -0700)]
vfs: use lockref_get_not_zero() for optimistic lockless dget_parent()

A valid parent pointer is always going to have a non-zero reference
count, but if we look up the parent optimistically without locking, we
have to protect against the (very unlikely) race against renaming
changing the parent from under us.

We do that by using lockref_get_not_zero(), and then re-checking the
parent pointer after getting a valid reference.

[ This is a re-implementation of a chunk from the original patch by
  Waiman Long: "dcache: Enable lockless update of dentry's refcount".
  I've completely rewritten the patch-series and split it up, but I'm
  attributing this part to Waiman as it's close enough to his earlier
  patch  - Linus ]

Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agolockref: add 'lockref_get_or_lock() helper
Linus Torvalds [Mon, 2 Sep 2013 18:14:19 +0000 (11:14 -0700)]
lockref: add 'lockref_get_or_lock() helper

This behaves like "lockref_get_not_zero()", but instead of doing nothing
if the count was zero, it returns with the lock held.

This allows callers to revalidate the lockref-protected data structure
if required even if the count was zero to begin with, and possibly
increment the count if it passes muster.

In particular, the dentry code wants this when it wants to turn an
RCU-protected dentry into a stable refcounted one: if the dentry count
it zero, but the sequence number still validates the dentry, we can take
a reference to it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Mon, 2 Sep 2013 17:43:13 +0000 (10:43 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "This is a bug fix for the pm80xx driver.  It turns out that when the
  new hardware support was added in 3.10 the IO command size was kept at
  the old hard coded value.  This means that the driver attaches to some
  new cards and then simply hangs the system"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] pm80xx: fix Adaptec 71605H hang

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Sep 2013 16:55:14 +0000 (09:55 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 boot fix from Peter Anvin:
 "A single very small boot fix for very large memory systems (> 0.5T)"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Fix boot crash with DEBUG_PAGE_ALLOC=y and more than 512G RAM

11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Mon, 2 Sep 2013 16:54:06 +0000 (09:54 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dma fix from Vinod Koul:
 "A fix for resolving TI_EDMA driver's build error in allmodconfig to
  have filter function built in""

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma/Kconfig: TI_EDMA needs to be boolean

11 years agoMerge remote-tracking branch 'regulator/topic/tps65912' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:23 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/tps65912' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/ti-abb' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:22 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/ti-abb' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/sec' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:21 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/sec' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/ramp' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:20 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/ramp' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/pfuze100' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:18 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/pfuze100' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/palmas' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:17 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/palmas' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/optional' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:17 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/optional' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/max8660' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:16 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/max8660' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/lp8755' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:14 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/lp8755' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/lp872x' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:13 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/lp872x' into regulator-next

11 years agoMerge remote-tracking branch 'regulator/topic/linear-range' into regulator-next
Mark Brown [Sun, 1 Sep 2013 12:50:12 +0000 (13:50 +0100)]
Merge remote-tracking branch 'regulator/topic/linear-range' into regulator-next