Commit graph

13074 commits

Author SHA1 Message Date
Cong Wang
7265a6bbdd netconsole: add IPv6 example in doc
Update the netconsole document as well.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-08 17:56:10 -08:00
Richard Braun
7e8b1e78ea Documentation: Memory barrier semantics of atomic_xchg()
Add atomic_xchg() to documentation for atomic operations and
memory barriers.

Signed-off-by: Richard Braun <rbraun@sceen.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2013-01-08 14:14:55 -08:00
Paul Gortmaker
1b0048a44c rcu: Make rcu_nocb_poll an early_param instead of module_param
The as-documented rcu_nocb_poll will fail to enable this feature
for two reasons.  (1) there is an extra "s" in the documented
name which is not in the code, and (2) since it uses module_param,
it really is expecting a prefix, akin to "rcutree.fanout_leaf"
and the prefix isn't documented.

However, there are several reasons why we might not want to
simply fix the typo and add the prefix:

1) we'd end up with rcutree.rcu_nocb_poll, and rather probably make
a change to rcutree.nocb_poll

2) if we did #1, then the prefix wouldn't be consistent with the
rcu_nocbs=<cpumap> parameter (i.e. one with, one without prefix)

3) the use of module_param in a header file is less than desired,
since it isn't immediately obvious that it will get processed
via rcutree.c and get the prefix from that (although use of
module_param_named() could clarify that.)

4) the implied export of /sys/module/rcutree/parameters/rcu_nocb_poll
data to userspace via module_param() doesn't really buy us anything,
as it is read-only and we can tell if it is enabled already without
it, since there is a printk at early boot telling us so.

In light of all that, just change it from a module_param() to an
early_setup() call, and worry about adding it to /sys later on if
we decide to allow a dynamic setting of it.

Also change the variable to be tagged as read_mostly, since it
will only ever be fiddled with at most, once at boot.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2013-01-08 14:12:19 -08:00
Olof Johansson
2d9e02cad6 It includes one critical fix - wrong flexcan2 clock will hang system
when the port gets brought up.  The other two are non-critical fixes,
 which are sent together here, since it's still early -rc stage.
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Merge tag 'imx-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo:

It includes one critical fix - wrong flexcan2 clock will hang system
when the port gets brought up.  The other two are non-critical fixes,
which are sent together here, since it's still early -rc stage.

* tag 'imx-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: dts: imx31-bug: Fix manufacturer compatible string
  clk: imx: Remove 'clock-output-names' from the examples
2013-01-08 08:39:00 -08:00
Boris BREZILLON
9421bade07 pwm: atmel: add Timer Counter Block PWM driver
This patch adds a PWM driver based on Atmel Timer Counter Block. The
Timer Counter Block is used in Waveform generator mode.

A Timer Counter Block provides up to 6 PWM devices grouped by 2:
* group 0 = PWM 0 and 1
* group 1 = PWM 2 and 3
* group 2 = PMW 4 and 5

PWM devices in a given group must be configured with the same period
value. If a PWM device in a group tries to change the period value and
the other device is already configured with a different value an error
will be returned.

This driver requires device tree support. The Timer Counter Block number
used to create a PWM chip is given by the tc-block field in an
"atmel,tcb-pwm" compatible node.

This patch was tested on kizbox board (at91sam9g20 SoC) with pwm-leds.

Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2013-01-08 16:52:10 +01:00
Linus Torvalds
5c33d9b248 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) New sysctl ndisc_notify needs some documentation, from Hanns
    Frederic Sowa.

 2) Netfilter REJECT target doesn't set transport header of SKB
    correctly, from Mukund Jampala.

 3) Forcedeth driver needs to check for DMA mapping failures, from Larry
    Finger.

 4) brcmsmac driver can't use usleep_range while holding locks, use
    udelay instead.  From Niels Ole Salscheider.

 5) Fix unregister of netlink bridge multicast database handlers, from
    Vlad Yasevich and Rami Rosen.

 6) Fix checksum calculations in netfilter's ipv6 network prefix
    translation module.

 7) Fix high order page allocation failures in netfilter xt_recent, from
    Eric Dumazet.

 8) mac802154 needs to use netif_rx_ni() instead of netif_rx() because
    mac802154_process_data() can execute in process rather than
    interrupt context.  From Alexander Aring.

 9) Fix splice handling of MSG_SENDPAGE_NOTLAST, otherwise we elide one
    tcp_push() too many.  From Eric Dumazet and Willy Tarreau.

10) Fix skb->truesize tracking in XEN netfront driver, from Ian
    Campbell.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits)
  xen/netfront: improve truesize tracking
  ipv4: fix NULL checking in devinet_ioctl()
  tcp: fix MSG_SENDPAGE_NOTLAST logic
  net/ipv4/ipconfig: really display the BOOTP/DHCP server's address.
  ip-sysctl: fix spelling errors
  mac802154: fix NOHZ local_softirq_pending 08 warning
  ipv6: document ndisc_notify in networking/ip-sysctl.txt
  ath9k: Fix Kconfig for ATH9K_HTC
  netfilter: xt_recent: avoid high order page allocations
  netfilter: fix missing dependencies for the NOTRACK target
  netfilter: ip6t_NPT: fix IPv6 NTP checksum calculation
  bridge: add empty br_mdb_init() and br_mdb_uninit() definitions.
  vxlan: allow live mac address change
  bridge: Correctly unregister MDB rtnetlink handlers
  brcmfmac: fix parsing rsn ie for ap mode.
  brcmsmac: add copyright information for Canonical
  rtlwifi: rtl8723ae: Fix warning for unchecked pci_map_single() call
  rtlwifi: rtl8192se: Fix warning for unchecked pci_map_single() call
  rtlwifi: rtl8192de: Fix warning for unchecked pci_map_single() call
  rtlwifi: rtl8192ce: Fix warning for unchecked pci_map_single() call
  ...
2013-01-08 07:31:49 -08:00
Viresh Kumar
a9ddb575d6 dmaengine: dw_dmac: Enhance device tree support
dw_dmac driver already supports device tree but it used to have its platform
data passed the non-DT way.

This patch does following changes:
- pass platform data via DT, non-DT way still takes precedence if both are used.
- create generic filter routine
- Earlier slave information was made available by slave specific filter routines
  in chan->private field. Now, this information would be passed from within dmac
  DT node. Slave drivers would now be required to pass bus_id (a string) as
  parameter to this generic filter(), which would be compared against the slave
  data passed from DT, by the generic filter routine.
- Update binding document

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[Fixed __devinit usage]
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2013-01-07 22:04:14 -08:00
Linus Torvalds
2a893f91f5 ACPI and power management fixes for 3.8-rc3
* Removal of some ACPICA code that the kernel will never use from Lv Zheng.
 
 * APEI fix from Adrian Huang.
 
 * Removal of unnecessary ACPI memory hotplug driver code from Liu Jinsong.
 
 * Minor ACPI power management fixes.
 
 * ACPI debug code fix from Joe Perches.
 
 * ACPI fix to make system bus device nodes get the right names.
 
 * PNP resources handling fixes from Witold Szczeponik.
 
 * cpuidle fix for a recent regression stalling boot on systems with great
   numbers of CPUs from Daniel Lezcano.
 
 * cpuidle fixes from Sivaram Nair.
 
 * intel_idle debug message fix from Youquan Song.
 
 * cpufreq build regression fix from Larry Finger.
 
 * cpufreq fix for an obscure initialization race related to statistics from
   Konstantin Khlebnikov.
 
 * cpufreq change disabling the Longhaul driver by default from Rafał Bilski.
 
 * PM core fix preventing device suspend errors from happening during system
   suspend due to obscure race conditions.
 
 * PM QoS local variable name cleanup.
 
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Merge tag 'pm+acpi-for-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - Removal of some ACPICA code that the kernel will never use from Lv
   Zheng.

 - APEI fix from Adrian Huang.

 - Removal of unnecessary ACPI memory hotplug driver code from Liu
   Jinsong.

 - Minor ACPI power management fixes.

 - ACPI debug code fix from Joe Perches.

 - ACPI fix to make system bus device nodes get the right names.

 - PNP resources handling fixes from Witold Szczeponik.

 - cpuidle fix for a recent regression stalling boot on systems with
   great numbers of CPUs from Daniel Lezcano.

 - cpuidle fixes from Sivaram Nair.

 - intel_idle debug message fix from Youquan Song.

 - cpufreq build regression fix from Larry Finger.

 - cpufreq fix for an obscure initialization race related to statistics
   from Konstantin Khlebnikov.

 - cpufreq change disabling the Longhaul driver by default from Rafał
   Bilski.

 - PM core fix preventing device suspend errors from happening during
   system suspend due to obscure race conditions.

 - PM QoS local variable name cleanup.

* tag 'pm+acpi-for-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: Move disabling/enabling runtime PM to late suspend/early resume
  PM / QoS: Rename local variable in dev_pm_qos_add_ancestor_request()
  ACPI / scan: Do not use dummy HID for system bus ACPI nodes
  cpufreq / governor: Fix problem with cpufreq_ondemand or cpufreq_conservative
  cpufreq / Longhaul: Disable driver by default
  cpufreq / stats: fix race between stats allocation and first usage
  cpuidle: fix lock contention in the idle path
  intel_idle: pr_debug information need separated
  cpuidle / coupled: fix ready counter decrement
  cpuidle: Fix finding state with min power_usage
  PNP: Handle IORESOURCE_BITS in resource allocation
  PNP: Simplify setting of resources
  ACPI / power: Remove useless message from device registering routine
  ACPI / glue: Update DBG macro to include KERN_DEBUG
  ACPI / PM: Do not apply ACPI_SUCCESS() to acpi_bus_get_device() result
  ACPI / memhotplug: remove redundant logic of acpi memory hotadd
  ACPI / APEI: Fix the returned value in erst_dbg_read
  ACPICA: Remove useless mini-C library.
2013-01-07 16:17:18 -08:00
Cornelia Huck
fa6b7fe992 KVM: s390: Add support for channel I/O instructions.
Add a new capability, KVM_CAP_S390_CSS_SUPPORT, which will pass
intercepts for channel I/O instructions to userspace. Only I/O
instructions interacting with I/O interrupts need to be handled
in-kernel:

- TEST PENDING INTERRUPTION (tpi) dequeues and stores pending
  interrupts entirely in-kernel.
- TEST SUBCHANNEL (tsch) dequeues pending interrupts in-kernel
  and exits via KVM_EXIT_S390_TSCH to userspace for subchannel-
  related processing.

Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-01-07 19:53:43 -02:00
Cornelia Huck
d6712df95b KVM: s390: Base infrastructure for enabling capabilities.
Make s390 support KVM_ENABLE_CAP.

Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-01-07 19:53:42 -02:00
Cornelia Huck
48a3e950f4 KVM: s390: Add support for machine checks.
Add support for injecting machine checks (only repressible
conditions for now).

This is a bit more involved than I/O interrupts, for these reasons:

- Machine checks come in both floating and cpu varieties.
- We don't have a bit for machine checks enabling, but have to use
  a roundabout approach with trapping PSW changing instructions and
  watching for opened machine checks.

Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-01-07 19:53:41 -02:00
Cornelia Huck
d8346b7d9b KVM: s390: Support for I/O interrupts.
Add support for handling I/O interrupts (standard, subchannel-related
ones and rudimentary adapter interrupts).

The subchannel-identifying parameters are encoded into the interrupt
type.

I/O interrupts are floating, so they can't be injected on a specific
vcpu.

Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-01-07 19:53:40 -02:00
Greg Thelen
92e015b1cf cgroups: move cgroup_event_listener.c to tools/cgroup
Move the cgroup_event_listener.c tool from Documentation into the new
tools/cgroup directory.

This change involves wiring cgroup_event_listener.c into the tools/
make system so that is can be built with:
  $ make tools/cgroup

Signed-off-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-01-07 09:41:28 -08:00
Matt Porter
deef124437 of: dma: fix typos in generic dma binding definition
Some semicolons were left out in the examples.

The #dma-channels and #dma-requests properties have a prefix
that is, by convention, reserved for cell size properties.
Rename those properties to dma-channels and dma-requests.

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2013-01-06 20:57:46 -08:00
Jon Hunter
aa3da644c7 of: Add generic device tree DMA helpers
This is based upon the work by Benoit Cousson [1] and Nicolas Ferre [2]
to add some basic helpers to retrieve a DMA controller device_node and the
DMA request/channel information.

Aim of DMA helpers
- The purpose of device-tree is to describe the capabilites of the hardware.
  Thinking about DMA controllers purely from the context of the hardware to
  begin with, we can describe a device in terms of a DMA controller as
  follows ...
  	1. Number of DMA controllers
	2. Number of channels (maybe physical or logical)
	3. Mapping of DMA requests signals to DMA controller
	4. Number of DMA interrupts
	5. Mapping of DMA interrupts to channels
- With the above in mind the aim of the DT DMA helper functions is to extract
  the above information from the DT and provide to the appropriate driver.
  However, due to the vast number of DMA controllers and not all are using a
  common driver (such as DMA Engine) it has been seen that this is not a
  trivial task. In previous discussions on this topic the following concerns
  have been raised ...
	1. How does the binding support devices with multiple DMA controllers?
  	2. How to support both legacy DMA controllers not using DMA Engine as
	   well as those that support DMA Engine.
	3. When using with DMA Engine how do we support the various
	   implementations where the opaque filter function parameter differs
	   between implementations?
	4. How do we handle DMA channels that are identified with a string
	   versus a integer?
- Hence the design of the DMA helpers has to accomodate the above or align on
  an agreement what can be or should be supported.

Design of DMA helpers

1. Registering DMA controllers

   In the case of DMA controllers that are using DMA Engine, requesting a
   channel is performed by calling the following function.

	struct dma_chan *dma_request_channel(dma_cap_mask_t mask,
			dma_filter_fn filter_fn,
			void *filter_param);

   The mask variable is used to match a type of the device controller in a list
   of controllers. The filter_fn and filter_param are used to identify the
   required dma channel and return a handle to the dma channel of type dma_chan.

   From the examples I have seen, the mask and filter_fn are constant
   for a given DMA controller and therefore, we can specify these as controller
   specific data when registering the DMA controller with the device-tree DMA
   helpers.

   The filter_param variable is of an unknown type and is typically specific
   to the DMA engine implementation for a given DMA controller. To allow some
   flexibility in the type and formating of this filter_param we employ an
   xlate to translate the device-tree binding information into the appropriate
   format. The xlate function used for a DMA controller can also be specified
   when registering the DMA controller with the device-tree DMA helpers.

   Based upon the above, a function for registering the DMA controller with the
   DMA helpers now looks like the below. The data variable is used to pass a
   pointer to DMA controller specific data used by the xlate function.

	int of_dma_controller_register(struct device_node *np,
		struct dma_chan *(*of_dma_xlate)
		(struct of_phandle_args *, struct of_dma *),
		void *data)

   For example, in the case where DMA engine is used, we define the following
   structure (that stores the DMA engine capability mask and filter function)
   and pass this to the data variable in the above function.

	struct of_dma_filter_info {
		dma_cap_mask_t  dma_cap;
		dma_filter_fn   filter_fn;
	};

2. Representing and requesting channel information

   Please see the dma binding documentation included in this patch for a
   description of how DMA controllers and client information should be
   represented with device-tree. For more information on how this binding
   came about please see [3]. In addition to this, feedback received from
   the Linux kernel summit showed a consensus (among those who attended) to
   use a name to identify DMA client information [4].

   A DMA channel can be requested by calling the following function, where name
   is a required parameter used for identifying a DMA channel. This function
   has been designed to return a structure of type dma_chan to work with the
   DMA engine driver. Note that if DMA engine is used then drivers should be
   using the DMA engine API dma_request_slave_channel() (implemented in part 2
   of this series, "dmaengine: add helper function to request a slave DMA
   channel") which will in turn call the below function if device-tree is
   present. The aim being to have a common DMA engine interface regardless of
   whether device tree is being used.

	struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
						      char *name)

3. Supporting legacy devices not using DMA Engine

   These devices present a problem, as there may not be a uniform way to easily
   support them with regard to device tree. Ideally, these should be migrated
   to DMA engine. However, if this is not possible, then they should still be
   able to use this binding, the only constaint imposed by this implementation
   is that when requesting a DMA channel via of_dma_request_slave_channel(), it
   will return a type of dma_chan.

This implementation has been tested on OMAP4430 using the kernel v3.6-rc5. I
have validated that MMC is working on the PANDA board with this implementation.
My development branch for testing on OMAP can be found here [5].

v6: - minor corrections in DMA binding documentation
v5: - minor update to binding documentation
    - added loop to exhaustively search for a slave channel in the case where
      there could be alternative channels available
v4: - revert the removal of xlate function from v3
    - update the proposed binding format and APIs based upon discussions [3]
v3: - avoid passing an xlate function and instead pass DMA engine parameters
    - define number of dma channels and requests in dma-controller node
v2: - remove of_dma_to_resource API
    - make property #dma-cells required (no fallback anymore)
    - another check in of_dma_xlate_onenumbercell() function

[1] http://article.gmane.org/gmane.linux.drivers.devicetree/12022
[2] http://article.gmane.org/gmane.linux.ports.arm.omap/73622
[3] http://marc.info/?l=linux-omap&m=133582085008539&w=2
[4] http://pad.linaro.org/arm-mini-summit-2012
[5] https://github.com/jonhunter/linux/tree/dev-dt-dma

Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <djbw@fb.com>

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2013-01-06 20:57:46 -08:00
Andrew Lunn
ffd8f9a727 power/reset: Add a new driver implementing 'power off by restarting'
Some devices, Buffalo Linkstation LS-XHL and LS-CHLv2 for example,
power-off by restarting to letting u-boot hold the SoC until the user
presses a key. Add a generic driver to implement this. It binds a function
to pm_power_off, which calls arm_pm_restart.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-01-06 14:00:31 -08:00
Andrew Lunn
e8fc721a9a power/reset: Add a new driver to turn QNAP board power off
The QNAP NAS boxes have a microcontroller attached to the SoCs second
serial port. By sending it a simple command, it will turn the power for
the board off. This driver registers a function for pm_power_off to send
such a command.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-01-06 14:00:23 -08:00
Andrew Lunn
5343527bbf Power: gpio-poweroff: Fix documentation and gpio_is_valid
Improve the documentation to clarify level vs edge triggered power off.
Improve the comments for level vs edge triggered power off.
Make use of gpio_is_valid().

Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-06 17:53:00 +00:00
Prabhakar Lad
1c612e9a1c [media] s5p-fimc: Fix typo of URL pointing to Media Controller API's
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-06 10:31:32 -02:00
Sylwester Nawrocki
24b9f50170 [media] V4L: Remove deprecated image centering controls
It has been over 3 years since the V4L2_CID_[HV]CENTER were deprecated.
Clean up the DocBook and remove the V4L2_CID_VCENTER_DEPRECATED,
V4L2_CID_VCENTER_DEPRECATED control related paragraphs.
Remove the V4L2_CID_[HV]CENTER controls definitions from v4l2-controls.h,
these controls are not used by any driver in the mainline now.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-06 09:59:47 -02:00
Rafael J. Wysocki
9f6d8f6ab2 PM: Move disabling/enabling runtime PM to late suspend/early resume
Currently, the PM core disables runtime PM for all devices right
after executing subsystem/driver .suspend() callbacks for them
and re-enables it right before executing subsystem/driver .resume()
callbacks for them.  This may lead to problems when there are
two devices such that the .suspend() callback executed for one of
them depends on runtime PM working for the other.  In that case,
if runtime PM has already been disabled for the second device,
the first one's .suspend() won't work correctly (and analogously
for resume).

To make those issues go away, make the PM core disable runtime PM
for devices right before executing subsystem/driver .suspend_late()
callbacks for them and enable runtime PM for them right after
executing subsystem/driver .resume_early() callbacks for them.  This
way the potential conflitcs between .suspend_late()/.resume_early()
and their runtime PM counterparts are still prevented from happening,
but the subtle ordering issues related to disabling/enabling runtime
PM for devices during system suspend/resume are much easier to avoid.

Reported-and-tested-by: Jan-Matthias Braun <jan_braun@gmx.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: 3.4+ <stable@vger.kernel.org>
2013-01-06 00:35:55 +01:00
Hans Verkuil
8ac7a9493a [media] v4l2-ctrls: add a notify callback
Sometimes platform/bridge drivers need to be notified when a control from
a sub-device changes value. In order to support this a notify callback was
added.
[dheitmueller@kernellabs.com: fix merge conflict in v4l2-ctrls.c]

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-05 00:49:54 -02:00
Carlos Alberto Lopez Perez
358e419f82 Documentation/sysctl/kernel.txt: document /proc/sys/shmall
Signed-off-by: Carlos Alberto Lopez Perez <clopez@igalia.com>
Cc: Rob Landley <rob@landley.net>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-04 16:11:46 -08:00
Stanislav Kinsbursky
03f5956680 ipc: add sysctl to specify desired next object id
Add 3 new variables and sysctls to tune them (by one "next_id" variable
for messages, semaphores and shared memory respectively).  This variable
can be used to set desired id for next allocated IPC object.  By default
it's equal to -1 and old behaviour is preserved.  If this variable is
non-negative, then desired idr will be extracted from it and used as a
start value to search for free IDR slot.

Notes:

1) this patch doesn't guarantee that the new object will have desired
   id.  So it's up to user space how to handle new object with wrong id.

2) After a sucessful id allocation attempt, "next_id" will be set back
   to -1 (if it was non-negative).

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-04 16:11:45 -08:00
stephen hemminger
3b09adcb20 ip-sysctl: fix spelling errors
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-04 15:12:34 -08:00
Hannes Frederic Sowa
db2b620aa0 ipv6: document ndisc_notify in networking/ip-sysctl.txt
I slipped in a new sysctl without proper documentation. I would like to
make up for this now.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-04 13:35:38 -08:00
Jonghwa Lee
bbf63be4f3 Thermal: exynos: Add sysfs node supporting exynos's emulation mode.
This patch supports exynos's emulation mode with newly created sysfs node.
Exynos 4x12 (4212, 4412) and 5 series provide emulation mode for thermal
management unit. Thermal emulation mode supports software debug for TMU's
operation. User can set temperature manually with software code and TMU
will read current temperature from user value not from sensor's value.
This patch includes also documentary placed under Documentation/thermal/.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2013-01-04 15:22:37 +08:00
Fabio Estevam
7425057294 clk: imx: Remove 'clock-output-names' from the examples
'clock-output-names' is not used in any of the dts/dtsi files for i.mx.

Remove it from the examples, so that the example and the real usage in the
dtsi files can match.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-01-04 13:16:00 +08:00
Huajun Li
9268cc3523 f2fs: update f2fs document to reflect SIT/NAT layout correctly
document to reflect the layout generated by mkfs.f2fs .

Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-01-04 09:42:59 +09:00
Linus Torvalds
49569646b2 Driver core __dev* removal patches
Here are the remaining __dev* removal patches against the 3.8-rc2 tree.
 All of these patches were previously sent to the subsystem maintainers,
 most of them were picked up and pushed to you, but there were a number
 that fell through the cracks, and new drivers were added during the
 merge window, so this series cleans up the rest of the instances of
 these markings.
 
 Third time's the charm...
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core __dev* removal patches - take 3 - from Greg Kroah-Hartman:
 "Here are the remaining __dev* removal patches against the 3.8-rc2
  tree.  All of these patches were previously sent to the subsystem
  maintainers, most of them were picked up and pushed to you, but there
  were a number that fell through the cracks, and new drivers were added
  during the merge window, so this series cleans up the rest of the
  instances of these markings.

  Third time's the charm...

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

Fixed up trivial conflict with the pinctrl pull in pinctrl-sirf.c.

* tag 'driver-core-3.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (54 commits)
  misc: remove __dev* attributes.
  include: remove __dev* attributes.
  Documentation: remove __dev* attributes.
  Drivers: misc: remove __dev* attributes.
  Drivers: block: remove __dev* attributes.
  Drivers: bcma: remove __dev* attributes.
  Drivers: char: remove __dev* attributes.
  Drivers: clocksource: remove __dev* attributes.
  Drivers: ssb: remove __dev* attributes.
  Drivers: dma: remove __dev* attributes.
  Drivers: gpu: remove __dev* attributes.
  Drivers: infinband: remove __dev* attributes.
  Drivers: memory: remove __dev* attributes.
  Drivers: mmc: remove __dev* attributes.
  Drivers: iommu: remove __dev* attributes.
  Drivers: power: remove __dev* attributes.
  Drivers: message: remove __dev* attributes.
  Drivers: macintosh: remove __dev* attributes.
  Drivers: mfd: remove __dev* attributes.
  pstore: remove __dev* attributes.
  ...
2013-01-03 16:17:50 -08:00
Greg Kroah-Hartman
63a29f744f Documentation: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from the kernel documentation.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:16 -08:00
Linus Torvalds
5f738967e8 A first round of pinctrl fixes for v3.8:
- i.MX5 register configuration
 - Swap a kfree to devm_kfree() to avoid memory
   corruption in the at91 driver
 - Add the missing device tree binding doc for the
   SIRF pin controller
 - Enable the SIRF GPIO pull up/down configuration
   from the device tree, it was previously retired
   from the hard-coded approach.
 - NULL check for the prcm_base in the Nomadik pin
   controller.
 - Provide the prcm_base from the device tree in the
   DT boot path for the Nomadik pin controller.
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Merge tag 'pinctrl-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pinctrl fixes from Linus Walleij:
 "A first round of pinctrl fixes for v3.8:
   - i.MX5 register configuration
   - Swap a kfree to devm_kfree() to avoid memory corruption in the at91
     driver
   - Add the missing device tree binding doc for the SIRF pin controller
   - Enable the SIRF GPIO pull up/down configuration from the device
     tree, it was previously retired from the hard-coded approach.
   - NULL check for the prcm_base in the Nomadik pin controller.
   - Provide the prcm_base from the device tree in the DT boot path for
     the Nomadik pin controller."

* tag 'pinctrl-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  ARM: ux500: add pinctrl address resources
  pinctrl: nomadik: return if prcm_base is NULL
  pinctrl: sirf: enable GPIO pullup/down configuration from dts
  pinctrl: sirf: add missing DT-binding document
  pinctrl: fix comment mistake
  drivers/pinctrl/pinctrl-at91.c: convert kfree to devm_kfree
  pinctrl: imx5: fix GPIO_8 pad CAN1_RXCAN configuration
2013-01-03 13:10:18 -08:00
Liu Ying
0e14235e6c Input: imx_keypad - add device tree support
This patch adds device tree support for imx keypad driver.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-01-03 12:41:31 -08:00
Kusanagi Kouichi
145bfa9d16 Revert "Documentation: ABI: /sys/devices/system/cpu/cpu#/node"
This reverts commit cba5dd7fa5.

Commit cba5dd7fa5 duplicates
/sys/devices/system/cpu/cpu#/node entry.
Commit 657348a056 has already added it.

Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-01-03 10:53:40 +01:00
Peter Ujfalusi
bd0b286e83 ASoC: omap-twl4030: Add support for routing, voice port and jack detect
Update the common machine driver to support more boards including Zoom2 and
SDP3430.
- Support for voice port of twl4030
- HS jack plug detection support
- The audio routing can be fine tuned via pdata or via provided routing
  table from DT.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-02 13:04:25 +00:00
Aaro Koskinen
8899b8d93e watchdog: twl4030_wdt: add DT support
Add DT support for twl4030_wdt. This is needed to get twl4030_wdt to
probe when booting with DT.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2013-01-02 12:07:05 +01:00
Martin Blumenstingl
8cd7085ff4 [media] get_dvb_firmware: Fix the location of firmware for Terratec HTC
Fix firmware download for the Terratec Cinergy HTC Stick HD. The file
was moved on the server.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-01 11:18:26 -02:00
Jiri Pirko
9a57247f31 rtnl: expose carrier value with possibility to set it
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-28 15:24:18 -08:00
Antonio Ospite
f6b70ec509 [media] get_dvb_firmware: add entry for the vp7049 firmware
Add an entry to download the dvb-usb-vp7049-0.95.fw firmware for the
Twinhan vp7049 and similar devices.
Known devices of this kind are:
  Twinhan/Azurewave DTV-DVB UDTT7049
  Digicom Digitune-S
  Think Xtra Hollywood DVB-T USB2.0

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-27 16:34:12 -02:00
Laxman Dewangan
c51ce403d3 regulator: tps51632: add DT support
Add DT support for the TI TPS51632. Add device binding document also.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-27 17:30:45 +00:00
Mauro Carvalho Chehab
a44dca1717 Linux 3.8-rc1
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Merge tag 'v3.8-rc1' into staging/for_v3.9

Linux 3.8-rc1

* tag 'v3.8-rc1': (10696 commits)
  Linux 3.8-rc1
  Revert "nfsd: warn on odd reply state in nfsd_vfs_read"
  ARM: dts: fix duplicated build target and alphabetical sort out for exynos
  dm stripe: add WRITE SAME support
  dm: remove map_info
  dm snapshot: do not use map_context
  dm thin: dont use map_context
  dm raid1: dont use map_context
  dm flakey: dont use map_context
  dm raid1: rename read_record to bio_record
  dm: move target request nr to dm_target_io
  dm snapshot: use per_bio_data
  dm verity: use per_bio_data
  dm raid1: use per_bio_data
  dm: introduce per_bio_data
  dm kcopyd: add WRITE SAME support to dm_kcopyd_zero
  dm linear: add WRITE SAME support
  dm: add WRITE SAME support
  dm: prepare to support WRITE SAME
  dm ioctl: use kmalloc if possible
  ...

Conflicts:
	MAINTAINERS
2012-12-27 12:44:11 -02:00
Barry Song
fc2b04e7fb pinctrl: sirf: enable GPIO pullup/down configuration from dts
commit 7bec207427 remove sirfsoc_gpio_set_pull function,
this patches takes the feature back by adding sirf,pullups and
sirf,pulldowns prop in dts, and the driver will set the GPIO
pull according to the dts.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-12-26 01:59:53 +01:00
Barry Song
408f181e0d pinctrl: sirf: add missing DT-binding document
While sending email to Linus for reviewing:
"pinctrl: sirf: add DT-binding pinmux mapping support"
https://patchwork.kernel.org/patch/1364361/

i have included the devicetree/bindings/pinctrl/pinctrl-sirf.txt

But while sending pull request with commit 056876f6c7,
i missed the document.

this patch takes the document back.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-12-26 01:59:52 +01:00
Yann E. MORIN
169743264f kconfig: document use of CONFIG_ environment variable
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2012-12-25 23:40:07 +01:00
Daniel Mack
fd23fb9f6b ALSA: ASoC: cs4271: add optional soft reset workaround
The CS4271 requires its LRCLK and MCLK to be stable before its RESET
line is de-asserted. That also means that clocks cannot be changed
without putting the chip back into hardware reset, which also requires
a complete re-initialization of all registers.

One (undocumented) workaround is to assert and de-assert the PDN bit
in the MODE2 register.

This patch adds a new flag to both the DT bindings as well as to the
platform data to enable that workaround.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Alexander Sverdlin <subaparts@yandex.ru>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-24 15:53:28 +00:00
Fabio Estevam
5ce568329e ASoC: wm8962: Add device tree support
Add device tree support.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-24 15:36:57 +00:00
Linus Torvalds
4fe19a136a Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
 "This includes some fixes and code improvements (like
  clk_prepare_enable and clk_disable_unprepare), conversion from the
  omap_wdt and twl4030_wdt drivers to the watchdog framework, addition
  of the SB8x0 chipset support and the DA9055 Watchdog driver and some
  OF support for the davinci_wdt driver."

* git://www.linux-watchdog.org/linux-watchdog: (22 commits)
  watchdog: mei: avoid oops in watchdog unregister code path
  watchdog: Orion: Fix possible null-deference in orion_wdt_probe
  watchdog: sp5100_tco: Add SB8x0 chipset support
  watchdog: davinci_wdt: add OF support
  watchdog: da9052: Fix invalid free of devm_ allocated data
  watchdog: twl4030_wdt: Change TWL4030_MODULE_PM_RECEIVER to TWL_MODULE_PM_RECEIVER
  watchdog: remove depends on CONFIG_EXPERIMENTAL
  watchdog: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
  watchdog: DA9055 Watchdog driver
  watchdog: omap_wdt: eliminate goto
  watchdog: omap_wdt: delete redundant platform_set_drvdata() calls
  watchdog: omap_wdt: convert to devm_ functions
  watchdog: omap_wdt: convert to new watchdog core
  watchdog: WatchDog Timer Driver Core: fix comment
  watchdog: s3c2410_wdt: use clk_prepare_enable and clk_disable_unprepare
  watchdog: imx2_wdt: Select the driver via ARCH_MXC
  watchdog: cpu5wdt.c: add missing del_timer call
  watchdog: hpwdt.c: Increase version string
  watchdog: Convert twl4030_wdt to watchdog core
  davinci_wdt: preparation for switch to common clock framework
  ...
2012-12-21 17:10:29 -08:00
Hans de Goede
23e8321624 [media] Documentation/media: Remove docs for obsoleted and removed v4l1 drivers
When the v4l1 drivers were removed, there docs were forgotten.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 13:35:58 -02:00
Sylwester Nawrocki
b01189b85b [media] V4L: DocBook: Add V4L2_MBUS_FMT_YUV10_1X30 media bus pixel code
This patch adds definition of media bus code for YUV pixel format
transferred in 30-bit samples where each component has 10 bits width.

[mchehab@redhat.com: fix a merge conflict at v4l2-mediabus.h]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 12:11:11 -02:00
Sakari Ailus
fe4abb550f [media] v4l: There's no __unsigned
Correct a typo. v4l2_plane.m.userptr is unsigned long, not __unsigned long.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 11:41:49 -02:00