Commit graph

21460 commits

Author SHA1 Message Date
Marek Vasut
5aa9a2cbc0 [ARM] wm97xx_batt: remove now useless header file
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2010-08-05 14:32:15 +08:00
stephen hemminger
d7100da026 ppp: make channel_ops const
The PPP channel ops structure should be const.
Cleanup the declarations to use standard C99 format.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-04 21:53:17 -07:00
Changli Gao
f9599ce111 sk_buff: introduce pskb_network_may_pull()
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-04 21:53:14 -07:00
Benjamin Herrenschmidt
42a0ae2282 Merge commit 'kumar/next' into next 2010-08-05 10:17:29 +10:00
Chris Wilson
fca3ec01e0 drm,io-mapping: Specify slot to use for atomic mappings
This is required should we ever attempt to use an io-mapping where
KM_USER0 is verboten, such as inside an IRQ context.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-05 08:48:53 +10:00
Linus Torvalds
3cfc2c42c1 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (48 commits)
  Documentation: update broken web addresses.
  fix comment typo "choosed" -> "chosen"
  hostap:hostap_hw.c Fix typo in comment
  Fix spelling contorller -> controller in comments
  Kconfig.debug: FAIL_IO_TIMEOUT: typo Faul -> Fault
  fs/Kconfig: Fix typo Userpace -> Userspace
  Removing dead MACH_U300_BS26
  drivers/infiniband: Remove unnecessary casts of private_data
  fs/ocfs2: Remove unnecessary casts of private_data
  libfc: use ARRAY_SIZE
  scsi: bfa: use ARRAY_SIZE
  drm: i915: use ARRAY_SIZE
  drm: drm_edid: use ARRAY_SIZE
  synclink: use ARRAY_SIZE
  block: cciss: use ARRAY_SIZE
  comment typo fixes: charater => character
  fix comment typos concerning "challenge"
  arm: plat-spear: fix typo in kerneldoc
  reiserfs: typo comment fix
  update email address
  ...
2010-08-04 15:31:02 -07:00
Linus Torvalds
5cf65713f8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (30 commits)
  Revert "HID: add support for the Wacom Intuos 4 wireless"
  HID: fix up Kconfig entry for ACRUX driver
  HID: add ACRUX game controller force feedback support
  HID: Force input registration for "VEC footpedal"
  HID: add HID_QUIRK_HIDINPUT_FORCE
  HID: hid-input.c: indentation fixes
  HID: hiddev: use usb_find_interface, get rid of BKL
  HID: ignore digitizer usage Undefined (0x00)
  HID: Add support for Conceptronic CLLRCMCE
  HID: hid-ids.h: Whitespace fixup, align using TABs
  HID: picolcd: implement refcounting of framebuffer
  HID: picolcd: do not reallocate memory on depth change
  HID: picolcd: Add minimal palette required by fbcon on 8bpp
  HID: magicmouse: Correct parsing of large X and Y motions.
  HID: magicmouse: report last touch up
  HID: picolcd: fix deferred_io init/cleanup to fb ordering
  HID: hid-ids.h: keep vendor ids in alphabetical order
  HID: add proper support for Elecom BM084 bluetooth mouse
  HID: magicmouse: enable horizontal scrolling
  HID: magicmouse: add param for scroll speed
  ...
2010-08-04 15:23:49 -07:00
Linus Torvalds
b7c8e55db7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (39 commits)
  random: Reorder struct entropy_store to remove padding on 64bits
  padata: update API documentation
  padata: Remove padata_get_cpumask
  crypto: pcrypt - Update pcrypt cpumask according to the padata cpumask notifier
  crypto: pcrypt - Rename pcrypt_instance
  padata: Pass the padata cpumasks to the cpumask_change_notifier chain
  padata: Rearrange set_cpumask functions
  padata: Rename padata_alloc functions
  crypto: pcrypt - Dont calulate a callback cpu on empty callback cpumask
  padata: Check for valid cpumasks
  padata: Allocate cpumask dependend recources in any case
  padata: Fix cpu index counting
  crypto: geode_aes - Convert pci_table entries to PCI_VDEVICE (if PCI_ANY_ID is used)
  pcrypt: Added sysfs interface to pcrypt
  padata: Added sysfs primitives to padata subsystem
  padata: Make two separate cpumasks
  padata: update documentation
  padata: simplify serialization mechanism
  padata: make padata_do_parallel to return zero on success
  padata: Handle empty padata cpumasks
  ...
2010-08-04 15:23:14 -07:00
Linus Torvalds
ffd386a9a8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: allow limited allocation before slab is online
  percpu: make @dyn_size always mean min dyn_size in first chunk init functions
2010-08-04 15:17:52 -07:00
Jeremy Fitzhardinge
ca50a5f390 Merge branch 'upstream/pvhvm' into upstream/xen
* upstream/pvhvm:
  Introduce CONFIG_XEN_PVHVM compile option
  blkfront: do not create a PV cdrom device if xen_hvm_guest
  support multiple .discard.* sections to avoid section type conflicts
  xen/pvhvm: fix build problem when !CONFIG_XEN
  xenfs: enable for HVM domains too
  x86: Call HVMOP_pagetable_dying on exit_mmap.
  x86: Unplug emulated disks and nics.
  x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock.
  xen: Fix find_unbound_irq in presence of ioapic irqs.
  xen: Add suspend/resume support for PV on HVM guests.
  xen: Xen PCI platform device driver.
  x86/xen: event channels delivery on HVM.
  x86: early PV on HVM features initialization.
  xen: Add support for HVM hypercalls.

Conflicts:
	arch/x86/xen/enlighten.c
	arch/x86/xen/time.c
2010-08-04 14:49:16 -07:00
Linus Walleij
c156d0a5b0 DMAENGINE: generic slave channel control v3
This adds an interface to the DMAengine to make it possible to
reconfigure a slave channel at runtime. We add a few foreseen
config parameters to the passed struct, with a void * pointer
for custom per-device or per-platform runtime slave data.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-08-04 14:13:02 -07:00
Yong Wang
0c42bd0e42 dmaengine: Driver for Topcliff PCH DMA controller
Topcliff PCH is the platform controller hub that is going to
be used in Intel's upcoming general embedded platforms. This
adds the driver for Topcliff PCH DMA controller. The DMA
channels are strictly for device to host or host to device
transfers and cannot be used for generic memcpy.

Signed-off-by: Yong Wang <yong.y.wang@intel.com>
[kill GFP_ATOMIC, kill __raw_{read|write}l, locking fixlet]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-08-04 14:12:05 -07:00
Ilya Yanok
e3b5e0d552 powerpc/fsl_pci: add quirk for mpc8308 pcie bridge
This patch adds the quirk for PCIE controller found on Freescale MPC8308.
The quirk is the same as for other MPC83xx processors.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-08-04 14:16:22 -05:00
Pekka Enberg
415cb47998 Merge branches 'slab/fixes', 'slob/fixes', 'slub/cleanups' and 'slub/fixes' into for-linus 2010-08-04 22:04:43 +03:00
Linus Torvalds
6ba74014c1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits)
  phy/marvell: add 88ec048 support
  igb: Program MDICNFG register prior to PHY init
  e1000e: correct MAC-PHY interconnect register offset for 82579
  hso: Add new product ID
  can: Add driver for esd CAN-USB/2 device
  l2tp: fix export of header file for userspace
  can-raw: Fix skb_orphan_try handling
  Revert "net: remove zap_completion_queue"
  net: cleanup inclusion
  phy/marvell: add 88e1121 interface mode support
  u32: negative offset fix
  net: Fix a typo from "dev" to "ndev"
  igb: Use irq_synchronize per vector when using MSI-X
  ixgbevf: fix null pointer dereference due to filter being set for VLAN 0
  e1000e: Fix irq_synchronize in MSI-X case
  e1000e: register pm_qos request on hardware activation
  ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice
  net: Add getsockopt support for TCP thin-streams
  cxgb4: update driver version
  cxgb4: add new PCI IDs
  ...

Manually fix up conflicts in:
 - drivers/net/e1000e/netdev.c: due to pm_qos registration
   infrastructure changes
 - drivers/net/phy/marvell.c: conflict between adding 88ec048 support
   and cleaning up the IDs
 - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req
   conflict (registration change vs marking it static)
2010-08-04 11:47:58 -07:00
Linus Torvalds
5abd9ccced Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6:
  ibft: Use IBFT_SIGN instead of open-coding the search string.
  ibft: convert iscsi_ibft module to iscsi boot lib
  ibft: separate ibft parsing from sysfs interface
  ibft: For UEFI machines actually do scan ACPI for iBFT.
  ibft: Update iBFT handling for v1.03 of the spec.
2010-08-04 11:25:58 -07:00
Linus Torvalds
f46e9913fa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Runtime: Add runtime PM statistics (v3)
  PM / Runtime: Make runtime_status attribute not debug-only (v. 2)
  PM: Do not use dynamically allocated objects in pm_wakeup_event()
  PM / Suspend: Fix ordering of calls in suspend error paths
  PM / Hibernate: Fix snapshot error code path
  PM / Hibernate: Fix hibernation_platform_enter()
  pm_qos: Get rid of the allocation in pm_qos_add_request()
  pm_qos: Reimplement using plists
  plist: Add plist_last
  PM: Make it possible to avoid races between wakeup and system sleep
  PNPACPI: Add support for remote wakeup
  PM: describe kernel policy regarding wakeup defaults (v. 2)
  PM / Hibernate: Fix typos in comments in kernel/power/swap.c
2010-08-04 11:14:36 -07:00
Linus Torvalds
8d91530c5f Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Remove pointless printk from p4-clockmod.
  [CPUFREQ] Fix section mismatch for powernow_cpu_init in powernow-k7.c
  [CPUFREQ] Fix section mismatch for longhaul_cpu_init.
  [CPUFREQ] Fix section mismatch for longrun_cpu_init.
  [CPUFREQ] powernow-k8: Fix misleading variable naming
  [CPUFREQ] Convert pci_table entries to PCI_VDEVICE (if PCI_ANY_ID is used)
  [CPUFREQ] arch/x86/kernel/cpu/cpufreq: use for_each_pci_dev()
  [CPUFREQ] fix brace coding style issue.
  [CPUFREQ] x86 cpufreq: Make trace_power_frequency cpufreq driver independent
  [CPUFREQ] acpi-cpufreq: Fix CPU_ANY CPUFREQ_{PRE,POST}CHANGE notification
  [CPUFREQ] ondemand: don't synchronize sample rate unless multiple cpus present
  [CPUFREQ] unexport (un)lock_policy_rwsem* functions
  [CPUFREQ] ondemand: Refactor frequency increase code
  [CPUFREQ] powernow-k8: On load failure, remind the user to enable support in BIOS setup
  [CPUFREQ] powernow-k8: Limit Pstate transition latency check
  [CPUFREQ] Fix PCC driver error path
  [CPUFREQ] fix double freeing in error path of pcc-cpufreq
  [CPUFREQ] pcc driver should check for pcch method before calling _OSC
  [CPUFREQ] fix memory leak in cpufreq_add_dev
  [CPUFREQ] revert "[CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)"

Manually fix up non-data merge conflict introduced by new calling
conventions for trace_power_start() in commit 6f4f2723d0 ("x86
cpufreq: Make trace_power_frequency cpufreq driver independent"), which
didn't update the intel_idle native hardware cpuidle driver.
2010-08-04 11:13:36 -07:00
Linus Torvalds
c145307a11 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (88 commits)
  ips driver: make it less chatty
  intel_scu_ipc: fix size field for intel_scu_ipc_command
  intel_scu_ipc: return -EIO for error condition in busy_loop
  intel_scu_ipc: fix data packing of PMIC command on Moorestown
  Clean up command packing on MRST.
  zero the stack buffer before giving random garbage to the SCU
  Fix stack buffer size for IPC writev messages
  intel_scu_ipc: Use the new cpu identification function
  intel_scu_ipc: tidy up unused bits
  Remove indirect read write api support.
  intel_scu_ipc: Support Medfield processors
  intel_scu_ipc: detect CPU type automatically
  x86 plat: limit x86 platform driver menu to X86
  acpi ec_sys: Be more cautious about ec write access
  acpi ec: Fix possible double io port registration
  hp-wmi: acpi_drivers.h is already included through acpi.h two lines below
  hp-wmi: Fix mixing up of and/or directive
  dell-laptop: make dell_laptop_i8042_filter() static
  asus-laptop: fix asus_input_init error path
  msi-wmi: make needlessly global symbols static
  ...
2010-08-04 10:44:06 -07:00
Linus Torvalds
5e83f6fbdb Merge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (198 commits)
  KVM: VMX: Fix host GDT.LIMIT corruption
  KVM: MMU: using __xchg_spte more smarter
  KVM: MMU: cleanup spte set and accssed/dirty tracking
  KVM: MMU: don't atomicly set spte if it's not present
  KVM: MMU: fix page dirty tracking lost while sync page
  KVM: MMU: fix broken page accessed tracking with ept enabled
  KVM: MMU: add missing reserved bits check in speculative path
  KVM: MMU: fix mmu notifier invalidate handler for huge spte
  KVM: x86 emulator: fix xchg instruction emulation
  KVM: x86: Call mask notifiers from pic
  KVM: x86: never re-execute instruction with enabled tdp
  KVM: Document KVM_GET_SUPPORTED_CPUID2 ioctl
  KVM: x86: emulator: inc/dec can have lock prefix
  KVM: MMU: Eliminate redundant temporaries in FNAME(fetch)
  KVM: MMU: Validate all gptes during fetch, not just those used for new pages
  KVM: MMU: Simplify spte fetch() function
  KVM: MMU: Add gpte_valid() helper
  KVM: MMU: Add validate_direct_spte() helper
  KVM: MMU: Add drop_large_spte() helper
  KVM: MMU: Use __set_spte to link shadow pages
  ...
2010-08-04 10:43:01 -07:00
Linus Torvalds
fe445c6e2c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits)
  Input: adp5588-keypad - fix NULL dereference in adp5588_gpio_add()
  Input: cy8ctmg110 - capacitive touchscreen support
  Input: keyboard - also match braille-only keyboards
  Input: adp5588-keys - export unused GPIO pins
  Input: xpad - add product ID for Hori Fighting Stick EX2
  Input: adxl34x - fix leak and use after free
  Input: samsung-keypad - Add samsung keypad driver
  Input: i8042 - reset keyboard controller wehen resuming from S2R
  Input: synaptics - set min/max for finger width
  Input: synaptics - only report width on hardware that supports it
  Input: evdev - signal that device is writable in evdev_poll()
  Input: mousedev - signal that device is writable in mousedev_poll()
  Input: change input handlers to use bool when possible
  Input: document the MT event slot protocol
  Input: introduce MT event slots
  Input: usbtouchscreen - implement reset_resume
  Input: usbtouchscreen - implement runtime power management
  Input: usbtouchscreen - implement basic suspend/resume
  Input: Add ATMEL QT602240 touchscreen driver
  Input: fix signedness warning in input_set_keycode()
  ...
2010-08-04 10:41:52 -07:00
Linus Torvalds
f63b759c44 Merge branch 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (243 commits)
  V4L/DVB: sms: Convert IR support to use the Remote Controller core
  V4L/DVB: sms: properly initialize IR phys and IR name
  V4L/DVB: standardize names at rc-dib0700 tables
  V4L/DVB: smsusb: enable IR port for Hauppauge WinTV MiniStick
  V4L/DVB: dib0700: Fix RC protocol logic to properly handle NEC/NECx and RC-5
  V4L/DVB: dib0700: properly implement IR change_protocol
  V4L/DVB: dib0700: break keytable into NEC and RC-5 variants
  V4L/DVB: dib0700: avoid bad repeat
  V4L/DVB: Port dib0700 to rc-core
  V4L/DVB: Add a keymap file with dib0700 table
  V4L/DVB: dvb-usb: add support for rc-core mode
  V4L/DVB: dvb-usb: prepare drivers for using rc-core
  V4L/DVB: dvb-usb: get rid of struct dvb_usb_rc_key
  V4L/DVB: rj54n1cb0c: fix a comment in the driver
  V4L/DVB: V4L2: sh_vou: VOU does support the full PAL resolution too
  V4L/DVB: V4L2: sh_mobile_camera_ceu: add support for CSI2
  V4L/DVB: V4L2: soc-camera: add a MIPI CSI-2 driver for SH-Mobile platforms
  V4L/DVB: V4L2: soc-camera: export soc-camera bus type for notifications
  V4L/DVB: V4L2: mediabus: add 12-bit Bayer and YUV420 pixel formats
  V4L/DVB: mediabus: fix ambiguous pixel code names
  ...
2010-08-04 10:38:08 -07:00
Linus Torvalds
4a35cee066 Merge branch 'stable/swiotlb-0.8.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6
* 'stable/swiotlb-0.8.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb-2.6:
  swiotlb: Make swiotlb bookkeeping functions visible in the header file.
  swiotlb: search and replace "int dir" with "enum dma_data_direction dir"
  swiotlb: Make internal bookkeeping functions have 'swiotlb_tbl' prefix.
  swiotlb: add the swiotlb initialization function with iotlb memory
  swiotlb: add swiotlb_tbl_map_single library function
2010-08-04 10:36:39 -07:00
Linus Torvalds
7e6880951d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (90 commits)
  AppArmor: fix build warnings for non-const use of get_task_cred
  selinux: convert the policy type_attr_map to flex_array
  AppArmor: Enable configuring and building of the AppArmor security module
  TOMOYO: Use pathname specified by policy rather than execve()
  AppArmor: update path_truncate method to latest version
  AppArmor: core policy routines
  AppArmor: policy routines for loading and unpacking policy
  AppArmor: mediation of non file objects
  AppArmor: LSM interface, and security module initialization
  AppArmor: Enable configuring and building of the AppArmor security module
  AppArmor: update Maintainer and Documentation
  AppArmor: functions for domain transitions
  AppArmor: file enforcement routines
  AppArmor: userspace interfaces
  AppArmor: dfa match engine
  AppArmor: contexts used in attaching policy to system objects
  AppArmor: basic auditing infrastructure.
  AppArmor: misc. base functions and defines
  TOMOYO: Update version to 2.3.0
  TOMOYO: Fix quota check.
  ...
2010-08-04 10:28:39 -07:00
Jiri Kosina
d790d4d583 Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
Trond Myklebust
a17c2153d2 SUNRPC: Move the bound cred to struct rpc_rqst
This will allow us to save the original generic cred in rpc_message, so
that if we migrate from one server to another, we can generate a new bound
cred without having to punt back to the NFS layer.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:09 -04:00
Trond Myklebust
8572b8e2e3 SUNRPC: Clean up of rpc_bindcred()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:08 -04:00
Trond Myklebust
58f9612c6e SUNRPC: Move remaining RPC client related task initialisation into clnt.c
Now that rpc_run_task() is the sole entry point for RPC calls, we can move
the remaining rpc_client-related initialisation of struct rpc_task from
sched.c into clnt.c.

Also move rpc_killall_tasks() into the same file, since that too is
relative to the rpc_clnt.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:07 -04:00
Trond Myklebust
d9b6cd9460 SUNRPC: Ensure that rpc_exit() always wakes up a sleeping task
Make rpc_exit() non-inline, and ensure that it always wakes up a task that
has been queued.

Kill off the now unused rpc_wake_up_task().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:07 -04:00
Trond Myklebust
241269bd0b SUNRPC: Make the credential cache hashtable size configurable
This patch allows the user to configure the credential cache hashtable size
using a new module parameter: auth_hashtable_size
When set, this parameter will be rounded up to the nearest power of two,
with a maximum allowed value of 1024 elements.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:06 -04:00
Trond Myklebust
988664a0f6 SUNRPC: Store the hashtable size in struct rpc_cred_cache
Cleanup in preparation for allowing the user to determine the maximum hash
table size.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:05 -04:00
Trond Myklebust
5d8d9a4d9f NFS: Ensure the AUTH_UNIX credcache is allocated dynamically
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:52:57 -04:00
Kyungmin Park
ad0d363b8f mtd: OneNAND: Introduce chip_probe function
Samsung SoCs use the own OneNAND controler and detect OneNAND chip at power on.
To use this feature, introduce the chip_probe function.

Also remove workaround for Samsung SoCs.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04 10:51:47 +01:00
Patrick Pannuto
5e7f5a178b timer: Added usleep_range timer
usleep_range is a finer precision implementations of msleep
and is designed to be a drop-in replacement for udelay where
a precise sleep / busy-wait is unnecessary.

Since an easy interface to hrtimers could lead to an undesired
proliferation of interrupts, we provide only a "range" API,
forcing the caller to think about an acceptable tolerance on
both ends and hopefully avoiding introducing another interrupt.

INTRO

As discussed here ( http://lkml.org/lkml/2007/8/3/250 ), msleep(1) is not
precise enough for many drivers (yes, sleep precision is an unfair notion,
but consistently sleeping for ~an order of magnitude greater than requested
is worth fixing). This patch adds a usleep API so that udelay does not have
to be used. Obviously not every udelay can be replaced (those in atomic
contexts or being used for simple bitbanging come to mind), but there are
many, many examples of

mydriver_write(...)
/* Wait for hardware to latch */
udelay(100)

in various drivers where a busy-wait loop is neither beneficial nor
necessary, but msleep simply does not provide enough precision and people
are using a busy-wait loop instead.

CONCERNS FROM THE RFC

Why is udelay a problem / necessary? Most callers of udelay are in device/
driver initialization code, which is serial...

	As I see it, there is only benefit to sleeping over a delay; the
	notion of "refactoring" areas that use udelay was presented, but
	I see usleep as the refactoring. Consider i2c, if the bus is busy,
	you need to wait a bit (say 100us) before trying again, your
	current options are:

		* udelay(100)
		* msleep(1) <-- As noted above, actually as high as ~20ms
				on some platforms, so not really an option
		* Manually set up an hrtimer to try again in 100us (which
		  is what usleep does anyway...)

	People choose the udelay route because it is EASY; we need to
	provide a better easy route.

	Device / driver / boot code is *currently* serial, but every few
	months someone makes noise about parallelizing boot, and IMHO, a
	little forward-thinking now is one less thing to worry about
	if/when that ever happens

udelay's could be preempted

	Sure, but if udelay plans on looping 1000 times, and it gets
	preempted on loop 200, whenever it's scheduled again, it is
	going to do the next 800 loops.

Is the interruptible case needed?

	Probably not, but I see usleep as a very logical parallel to msleep,
	so it made sense to include the "full" API. Processors are getting
	faster (albeit not as quickly as they are becoming more parallel),
	so if someone wanted to be interruptible for a few usecs, why not
	let them? If this is a contentious point, I'm happy to remove it.

OTHER THOUGHTS

I believe there is also value in exposing the usleep_range option; it gives
the scheduler a lot more flexibility and allows the programmer to express
his intent much more clearly; it's something I would hope future driver
writers will take advantage of.

To get the results in the NUMBERS section below, I literally s/udelay/usleep
the kernel tree; I had to go in and undo the changes to the USB drivers, but
everything else booted successfully; I find that extremely telling in and
of itself -- many people are using a delay API where a sleep will suit them
just fine.

SOME ATTEMPTS AT NUMBERS

It turns out that calculating quantifiable benefit on this is challenging,
so instead I will simply present the current state of things, and I hope
this to be sufficient:

How many udelay calls are there in 2.6.35-rc5?

	udealy(ARG) >=	| COUNT
	1000		| 319
	500		| 414
	100		| 1146
	20		| 1832

I am working on Android, so that is my focus for this. The following table
is a modified usleep that simply printk's the amount of time requested to
sleep; these tests were run on a kernel with udelay >= 20 --> usleep

"boot" is power-on to lock screen
"power collapse" is when the power button is pushed and the device suspends
"resume" is when the power button is pushed and the lock screen is displayed
         (no touchscreen events or anything, just turning on the display)
"use device" is from the unlock swipe to clicking around a bit; there is no
	sd card in this phone, so fail loading music, video, camera

	ACTION		| TOTAL NUMBER OF USLEEP CALLS	| NET TIME (us)
	boot		| 22				| 1250
	power-collapse	| 9				| 1200
	resume		| 5				| 500
	use device	| 59				| 7700

The most interesting category to me is the "use device" field; 7700us of
busy-wait time that could be put towards better responsiveness, or at the
least less power usage.

Signed-off-by: Patrick Pannuto <ppannuto@codeaurora.org>
Cc: apw@canonical.com
Cc: corbet@lwn.net
Cc: arjan@linux.intel.com
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-08-04 11:00:45 +02:00
Thomas Gleixner
e1b004c3ef Revert "timer: Added usleep[_range] timer"
This reverts commit 22b8f15c2f to merge
an advanced version.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-08-04 10:53:00 +02:00
Guennadi Liakhovetski
b3dd51a8a6 sh: add a reparent function to DIV6 clocks
Add support for reparenting of div6 clocks on SuperH and SH-Mobile SoCs.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 16:12:01 +09:00
Guennadi Liakhovetski
b5272b509a sh: add a list of parent configurations to struct clk
Many system clocks can select a parent by writing a value to a specific field
in the configuration register. Add a list of parents and location and width of
the source selection field in the clock configuration register to struct clk to
assist in clk_set_parent() implementation.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 16:11:56 +09:00
Paul Mundt
701ec7a7b0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	arch/arm/configs/ap4evb_defconfig
	arch/arm/configs/g3evm_defconfig
	arch/arm/configs/g4evm_defconfig

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 11:56:17 +09:00
Shubhrajyoti D
173bdd746b Input: gpio_keys - add hooks to enable/disable device
Allow platform code to specify callbcks that will be invoked when
input device is opened or closed, allowing, for example, to enable
the device.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-03 19:45:31 -07:00
Trond Myklebust
f1f88fc7e8 SUNRPC: The function rpc_restart_call() should return success/failure
Both rpc_restart_call_prepare() and rpc_restart_call() test for the
RPC_TASK_KILLED flag, and fail to restart the RPC call if that flag is set.

This patch allows callers to know whether or not the restart was
successful, so that they can perform cleanups etc in case of failure.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:44 -04:00
Theodore Ts'o
8dd420466c jbd2: Remove t_handle_lock from start_this_handle()
This should remove the last exclusive lock from start_this_handle(),
so that we should now be able to start multiple transactions at the
same time on large SMP systems.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-08-03 21:38:29 -04:00
Theodore Ts'o
a931da6ac9 jbd2: Change j_state_lock to be a rwlock_t
Lockstat reports have shown that j_state_lock is a major source of
lock contention, especially on systems with more than 4 CPU cores.  So
change it to be a read/write spinlock.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-08-03 21:35:12 -04:00
Linus Torvalds
b8b3e9058f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: (22 commits)
  9p: fix sparse warnings in new xattr code
  fs/9p: remove sparse warning in vfs_inode
  fs/9p: destroy fid on failed remove
  fs/9p: Prevent parallel rename when doing fid_lookup
  fs/9p: Add support user. xattr
  net/9p: Implement TXATTRCREATE 9p call
  net/9p: Implement attrwalk 9p call
  9p: Implement LOPEN
  fs/9p: This patch implements TLCREATE for 9p2000.L protocol.
  9p: Implement TMKDIR
  9p: Implement TMKNOD
  9p: Define and implement TSYMLINK for 9P2000.L
  9p: Define and implement TLINK for 9P2000.L
  9p: Define and implement TLINK for 9P2000.L
  9p: Implement client side of setattr for 9P2000.L protocol.
  9p: getattr client implementation for 9P2000.L protocol.
  fs/9p: Pass the correct user credentials during attach
  net/9p: Handle the server returned error properly
  9p: readdir implementation for 9p2000.L
  9p: Make use of iounit for read/write
  ...
2010-08-03 14:36:16 -07:00
Linus Torvalds
51102ee5b8 Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (49 commits)
  xfs simplify and speed up direct I/O completions
  xfs: move aio completion after unwritten extent conversion
  direct-io: move aio_complete into ->end_io
  xfs: fix big endian build
  xfs: clean up xfs_bmap_get_bp
  xfs: simplify xfs_truncate_file
  xfs: kill the b_strat callback in xfs_buf
  xfs: remove obsolete osyncisosync mount option
  xfs: clean up filestreams helpers
  xfs: fix gcc 4.6 set but not read and unused statement warnings
  xfs: Fix build when CONFIG_XFS_POSIX_ACL=n
  xfs: fix unsigned underflow in xfs_free_eofblocks
  xfs: use GFP_NOFS for page cache allocation
  xfs: fix memory reclaim recursion deadlock on locked inode buffer
  xfs: fix xfs_trans_add_item() lockdep warnings
  xfs: simplify and remove xfs_ireclaim
  xfs: don't block on buffer read errors
  xfs: move inode shrinker unregister even earlier
  xfs: remove a dmapi leftover
  xfs: writepage always has buffers
  ...
2010-08-03 14:33:38 -07:00
Linus Torvalds
be82ae0238 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (291 commits)
  ARM: AMBA: Add pclk support to AMBA bus infrastructure
  ARM: 6278/2: fix regression in RealView after the introduction of pclk
  ARM: 6277/1: mach-shmobile: Allow users to select HZ, default to 128
  ARM: 6276/1: mach-shmobile: remove duplicate NR_IRQS_LEGACY
  ARM: 6246/1: mmci: support larger MMCIDATALENGTH register
  ARM: 6245/1: mmci: enable hardware flow control on Ux500 variants
  ARM: 6244/1: mmci: add variant data and default MCICLOCK support
  ARM: 6243/1: mmci: pass power_mode to the translate_vdd callback
  ARM: 6274/1: add global control registers definition header file for nuc900
  mx2_camera: fix type of dma buffer virtual address pointer
  mx2_camera: Add soc_camera support for i.MX25/i.MX27
  arm/imx/gpio: add spinlock protection
  ARM: Add support for the LPC32XX arch
  ARM: LPC32XX: Arch config menu supoport and makefiles
  ARM: LPC32XX: Phytec 3250 platform support
  ARM: LPC32XX: Misc support functions
  ARM: LPC32XX: Serial support code
  ARM: LPC32XX: System suspend support
  ARM: LPC32XX: GPIO, timer, and IRQ drivers
  ARM: LPC32XX: Clock driver
  ...
2010-08-03 14:31:24 -07:00
Amerigo Wang
226528c610 [CPUFREQ] unexport (un)lock_policy_rwsem* functions
lock_policy_rwsem_* and unlock_policy_rwsem_* functions are scheduled
to be unexported when 2.6.33. Now there are no other callers of them
out of cpufreq.c, unexport them and make them static.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2010-08-03 13:47:04 -04:00
Alek Du
8950778704 gpio: Add PMIC GPIO block support
Moorestown has PMIC chip which contains GPIO blocks. The PMIC chip is
connected to Langwell by SPI interface. So this GPIO driver will be regarded
as SPI GPIO expander though the actual GPIO access is through IPC and SRAM.
The SPI master contoller will probe this device driver by parsing SPIB table.

Cleaned up for new IPC, GPE removed and some printk and other tidying by
Alan Cox. Fixes for points noted by Matthew Garrett

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:49:09 -04:00
Alan Cox
c715a38bb7 rar: Move the RAR driver into the right place as its now clean
We exit staging rar! rar! rar!...

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-03 09:48:50 -04:00
Jesse Barnes
8cadd2831b timer: add on-stack deferrable timer interfaces
In some cases (for instance with kernel threads) it may be desireable to
use on-stack deferrable timers to get their power saving benefits.  Add
interfaces to support this for the IPS driver.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03 09:48:45 -04:00
Ville Syrjälä
078ff546a8 OMAP: DSS2: OMAPFB: Add support for switching memory regions
Separate the memory region from the framebuffer device a little bit.
It's now possible to select the memory region used by the framebuffer
device using the new mem_idx parameter of omapfb_plane_info. If the
mem_idx is specified it will be interpreted as an index into the
memory regions array, if it's not specified the framebuffer's index is
used instead. So by default each framebuffer keeps using it's own
memory region which preserves backwards compatibility.

This allows cloning the same memory region to several overlays and yet
each overlay can be controlled independently since they can be
associated with separate framebuffer devices.

Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-08-03 15:18:46 +03:00