The dev_attrs field of struct bus_type is going away soon, dev_groups
should be used instead. This converts the uwb bus code to use the
correct field.
Cc: Bruno Morelli <bruno@evidence.eu.com>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dev_attrs field of struct bus_type is going away soon, dev_groups
should be used instead. This converts the MMC bus code to use the
correct field.
Cc: Chris Ball <cjb@laptop.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Konstantin Dorfman <kdorfman@codeaurora.org>
Cc: Seungwon Jeon <tgih.jun@samsung.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dev_attrs field of struct bus_type is going away soon, dev_groups
should be used instead. This converts the PNP bus code to use the
correct field.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, devm_ managed memory only supports kzalloc.
Convert the devm_kzalloc implementation to devm_kmalloc and remove the
complete memset to 0 but still set the initial struct devres header and
whatever padding before data to 0.
Add the other normal alloc variants as static inlines with __GFP_ZERO
added to the gfp flag where appropriate:
devm_kzalloc
devm_kcalloc
devm_kmalloc_array
Add gfp.h to device.h for the newly added static inlines.
akpm: the current API forces us to replace kmalloc() with kzalloc() when
performing devm_ conversions. This adds a relatively minor overhead.
More significantly, it will defeat kmemcheck used-uninitialized checking,
and for a particular driver, losing used-uninitialised checking for their
core controlling data structures will significantly degrade kmemcheck
usefulness.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Sangjung Woo <sangjung.woo@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
I worried that the delay of the sdma_run_channel0() maybe too long for
interrupt context, so I added the workqueues for RX/TX DMA.
But tested with bluetooth device, I find that the delay of sdma_run_channel0()
is about 8us (tested in imx6dl sabreauto board). I think the delay
is acceptable.
This patch removes the RX/TX workqueues for DMA, it makes the
code more clear.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This lets the transport do endian conversion if necessary, and insulates
the drivers from the difference.
Most drivers can use the simple helpers virtio_cread() and virtio_cwrite().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Pull tmpfile fix from Al Viro:
"A fix for double iput() in ->tmpfile() on ext3 and ext4; I'd fucked it
up, Miklos has caught it"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ext[34]: fix double put in tmpfile
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Merge tag 'dm-3.12-fix-cve' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device-mapper fix from Alasdair Kergon:
"A patch to avoid data corruption in a device-mapper snapshot.
This is primarily a data corruption bug that all users of
device-mapper snapshots will want to fix. The CVE is due to a data
leak under specific circumstances if, for example, the snapshot is
presented to a virtual machine: a block written as data inside the VM
can get interpreted incorrectly on the host outside the VM as
metadata, causing the host to provide the VM with access to blocks it
would not otherwise see. This is likely to affect few, if any,
people"
* tag 'dm-3.12-fix-cve' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm snapshot: fix data corruption
- A fix to the Lynxpoint IRQ handler
- Two late fixes to fallout from the gpiod refactoring
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Merge tag 'gpio-v3.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull gpio fixes from Linus Walleij:
"Three GPIO fixes for the v3.12 series:
- A fix to the Lynxpoint IRQ handler
- Two late fixes to fallout from the gpiod refactoring"
* tag 'gpio-v3.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpiolib: let gpiod_request() return -EPROBE_DEFER
gpiolib: safer implementation of desc_to_gpio()
gpio/lynxpoint: check if the interrupt is enabled in IRQ handler
Reserved fields of the sync instruction have been used for other
instructions (e.g. lwsync). On processors that do not support variants
of the sync instruction, emulate it by executing a sync to subsume the
effect of the intended instruction.
Signed-off-by: James Yang <James.Yang@freescale.com>
[scottwood@freescale.com: whitespace and subject line fix]
Signed-off-by: Scott Wood <scottwood@freescale.com>
On Book3E some SPE/FP/AltiVec interrupts share the same number. Use
common defines to indentify these numbers.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[scottwood@freescale.com: fixed space-before-tab]
Signed-off-by: Scott Wood <scottwood@freescale.com>
On Book3E some SPE/FP/AltiVec interrupts share the same number. Use
common defines to indentify these numbers.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
The Kconfig entry that allows to "Distribute interrupts on all CPUs by
default" has a (negative) dependency on MV64360. But that Kconfig symbol
was removed in v2.6.27, which means that this dependency has evaluated
to true ever since. It can be removed too.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Scott Wood <scottwood@freescale.com>
The function update_policy_cpu() is expected to be called when the policy->cpu
of a cpufreq policy is to be changed: ie., the new CPU nominated to become the
policy->cpu is different from the old one.
Print a warning if it is invoked with new_cpu == old_cpu, since such an
invocation might hint at a faulty logic in the caller.
Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Enable cpufreq on iMac G5 (iSight) model. Tested with the 2.1 GHz version.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Currently cpufreq ondemand governor cannot used on older G5 models,
because the transition latency is set to CPUFREQ_ETERNAL. Provide a
value based on a measurement on Xserve G5, which happens to be also the
highest allowed latency.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Some functions on switch path use msleep() which is inaccurate, and
depends on HZ. With HZ=100 msleep(1) takes actually over ten times longer.
Using usleep_range() we get more accurate sleeps.
I measured the "pfunc_slewing_done" polling to take 300us at max (on
2.3GHz dual-processor Xserve G5), so using 500us sleep there should
be fine.
With the patch, g5_switch_freq() duration drops from ~50ms to ~10ms on
Xserve with HZ=100.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Calxeda's new ECX-2000 part uses the same cpufreq interface as highbank,
so add it to the driver's compatibility list.
This is a minor change that can safely be applied to the 3.10 and 3.11
stable trees.
Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Only used for debug output, so we don't need to save it.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Perform an unconditional toggle of the cycle bit with 'xor'.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Remove a few extra lines and make it clear that all implementations
disable the port by sharing the same line of code.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Currently, code checks false return value from "regulator_set_voltage"
to show failure message. Modify the code to check proper return
value from "regulator_set_voltage".
Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Implement target reset by resetting the transport status.
(nab: Remove unused ret in tcm_loop_target_reset)
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Currently, code include opp.h twice. Remove one inclusion
of opp.h
Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Implement TCQ support, which enables us to do proper command
abort, too.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Add attribute 'transport_status' to simulate link failure.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Adding BIT(x) equivalent for unsigned long long type, BIT_ULL(x). Also
added BIT_ULL_MASK and BIT_ULL_WORD.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Having 64-bit MSR access methods on given CPU can avoid shifting and
simplify MSR content manipulation. We already have other combinations
of rdmsrl_xxx and wrmsrl_xxx but missing the _on_cpu version.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Added changes to Makefile and Kconfig to include in driver build.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The power capping framework providing a consistent interface between the
kernel and user space that allows power capping drivers to expose their
settings to user space in a uniform way.
The overall design of the framework is described in the documentation
added by the previous patch in this series.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Added power cap framework documentation. This explains the use of power
capping framework, sysfs and programming interface.
There are two documents:
- Documentation/power/powercap/powercap.txt : Explains use case and APIs.
- Documentation/ABI/testing/sysfs-class-powercap: Explains ABIs.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
As per coding style, braces {} are not necessary for single statement block
Signed-off-by: Evgeny Kapaev <orener300@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In 'decrypt_pki_encrypted_session_key' function:
Initializes 'payload' pointer and releases it on exit.
Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Cc: stable@vger.kernel.org # v2.6.28+
Pull cpuidle updates for v3.13 from Daniel Lezcano:
- Daniel Lezcano converted cpuidle to a platform_driver for at91.
The standby callback is stored in the platform_device's data
field as a callback for the driver, so the pm specific code and
the backend driver have no more dependency. Each SoC init function
fills the right callback at init time. As there are no more
dependency, we can move the driver in the drivers/cpuidle directory.
- Jean-Christophe Plagnol-Villard and Nicolas Ferre made a cleanup on
top of the patch described above and fixed up the ddr standby callback
so more SoC are supported. Even if the modifications are in the
mach-at91 directory, they asked these patches to be included through
the PM tree as they depend on the platform_driver conversion.
* 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux:
ARM: AT91: DT: pm: Select ram controller standby based on DT
ARM: AT91: pm: Factorize standby function
ARM: at91: cpuidle: Move driver to drivers/cpuidle
ARM: at91: cpuidle: Convert to platform driver
policy->cur is now set by cpufreq core when cpufreq_driver->get() is defined and
so drivers aren't required to set it. When space_id is ACPI_ADR_SPACE_SYSTEM_IO
for acpi cpufreq driver it doesn't set ->get to a valid function pointer and so
policy->cur is required to be set by driver.
This is already followed in acpi-cpufreq driver. This patch adds a comment
describing why we need to set policy->cur from driver.
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The index field of cpufreq_frequency_table has been renamed to
driver_data by commit 5070158 (cpufreq: rename index as driver_data
in cpufreq_frequency_table).
This patch updates the s3c64xx driver to match.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: 3.11+ <stable@vger.kernel.org> # 3.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Move non-dt selection to ioremap_registers init which is only called not
non-dt board.
So we can support sam9n12/sam9x5/sama5d3 too.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Detect presence of second bank. So we do not need to have on function per SoC
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
As the cpuidle driver code has no more the dependency with the pm code, the
'standby' callback being passed as a parameter to the device's platform data,
we can move the cpuidle driver in the drivers/cpuidle directory.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Conflicts:
drivers/cpuidle/Kconfig.arm
drivers/cpuidle/Makefile
Using the platform driver model is a good way to separate the cpuidle specific
code from the low level pm code. It allows to remove the dependency between
these two components.
The platform_device is located in the pm code and a 'set' function has been
added to set the standby function from the AT91_SOC_START initialization
function. Each SoC with a cpuidle driver will set the standby function in the
platform_data field at init time. Then pm code will register the cpuidle
platform device.
The cpuidle driver will register the platform_driver and use the device's
platform_data as a standby callback in the idle path.
The at91_pm_enter function contains a { if then else } based on cpu_is_xx
similar to what was in cpuidle. This is considered dangerous when adding a new
SoC. Like the cpuidle driver, a standby ops is defined and assigned when the
SoC init function specifies what is its standby function and reused in the
at91_pm_enter's 'case' block.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Currently clk_get_sys is used with cpu-cluster.<n> as the device id
which is incorrect. It should be connection/consumer ID instead.
It is possible to specify input clock in the cpu device node along
with the optional clock-name. clk_get_sys can't handle that.
This patch replaces clk_get_sys with clk_get to extend support for
clocks specified in the device tree cpu node.
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch adds freq_attr to show a list of exynos5440 scaling
available frequencies through sysfs. Common exynos driver already
supports this attribute.
Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The mechanism causing devices depending on a given power resource
(that is, devices that can be in D0 only if that power resource is
on) to be resumed automatically when the power resource is turned
on (and their "inferred" power state becomes D0 as a result) is
inherently racy and in fact unnecessary.
It is racy, because if the power resource is turned on and then
immediately off, the device resume triggered by the first transition
to "on" may still happen, causing the power resource to be turned
on again. That again will trigger the "resume of dependent devices"
mechanism, but if the devices in question are not in use, they will
be suspended in the meantime causing the power resource to be turned
off. However, the "resume of dependent devices" will next resume
them again and so on. In some cases (USB port PM in particular) that
leads to an endless busy loop of flipping the resource on and off
continuously.
It is needless, because whoever turns a power resource on will most
likely turn it off at some point and the devices that go into "D0"
as a result of turning it on will then go back into D3cold
(generally, the state they were in before).
Moreover, turning on all power resources a device needs to go into
D0 is not sufficient for a full transition into D0 in general.
Namely, _PS0 may need to be executed in addition to that in some
cases. This means that the whole rationale of the "resume of
dependent devices" mechanism was incorrect to begin with and it's
best to remove it entirely.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
