Pull dmaengine updates from Vinod Koul:
- dmatest updates for modularizing common struct and code
- remove SG support for VDMA xilinx IP and updates to driver
- Update to dw driver to support Intel iDMA controllers multi-block
support
- tegra updates for proper reporting of residue
- Add Snow Ridge ioatdma device id and support for IOATDMA v3.4
- struct_size() usage and useless LIST_HEAD cleanups in subsystem.
- qDMA controller driver for Layerscape SoCs
- stm32-dma PM Runtime support
- And usual updates to imx-sdma, sprd, Documentation, fsl-edma,
bcm2835, qcom_hidma etc
* tag 'dmaengine-5.1-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (81 commits)
dmaengine: imx-sdma: fix consistent dma test failures
dmaengine: imx-sdma: add a test for imx8mq multi sdma devices
dmaengine: imx-sdma: add clock ratio 1:1 check
dmaengine: dmatest: move test data alloc & free into functions
dmaengine: dmatest: add short-hand `buf_size` var in dmatest_func()
dmaengine: dmatest: wrap src & dst data into a struct
dmaengine: ioatdma: support latency tolerance report (LTR) for v3.4
dmaengine: ioatdma: add descriptor pre-fetch support for v3.4
dmaengine: ioatdma: disable DCA enabling on IOATDMA v3.4
dmaengine: ioatdma: Add Snow Ridge ioatdma device id
dmaengine: sprd: Change channel id to slave id for DMA cell specifier
dt-bindings: dmaengine: sprd: Change channel id to slave id for DMA cell specifier
dmaengine: mv_xor: Use correct device for DMA API
Documentation :dmaengine: clarify DMA desc. pointer after submission
Documentation: dmaengine: fix dmatest.rst warning
dmaengine: k3dma: Add support for dma-channel-mask
dmaengine: k3dma: Delete axi_config
dmaengine: k3dma: Upgrade k3dma driver to support hisi_asp_dma hardware
Documentation: bindings: dma: Add binding for dma-channel-mask
Documentation: bindings: k3dma: Extend the k3dma driver binding to support hisi-asp
...
Pull pin control updates from Linus Walleij:
"This is a calm cycle, not much happened this time around: not even
much incremental development. Some three new drivers, that is all.
No core changes.
New drivers:
- NXP (ex Freescale) i.MX 8QM driver.
- NXP (ex Freescale) i.MX 8MM driver.
- AT91 SAM9X60 subdriver.
Improvements:
- Support for external interrups (EINT) on Mediatek virtual GPIOs.
- Make BCM2835 pin config fully generic.
- Lots of Renesas SH-PFC incremental improvements"
* tag 'pinctrl-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (70 commits)
pinctrl: imx: fix scu link errors
dt-bindings: pinctrl: Document the i.MX50 IOMUXC binding
pinctrl: qcom: spmi-gpio: Reorder debug print
pinctrl: nomadik: fix possible object reference leak
pinctrl: stm32: return error upon hwspinlock failure
pinctrl: stm32: fix memory leak issue
pinctrl: sh-pfc: r8a77965: Add DRIF pins, groups and functions
pinctrl: sh-pfc: r8a77965: Add TMU pins, groups and functions
pinctrl: sh-pfc: Validate fixed-size field widths at build time
pinctrl: sh-pfc: sh73a0: Fix fsic_spdif pin groups
pinctrl: sh-pfc: r8a7792: Fix vin1_data18_b pin group
pinctrl: sh-pfc: r8a7791: Fix scifb2_data_c pin group
pinctrl: sh-pfc: emev2: Add missing pinmux functions
pinctrl: sunxi: Support I/O bias voltage setting on A80
pinctrl: ingenic: Add LCD pins for the JZ4725B SoC
pinctrl: samsung: Remove legacy API for handling external wakeup interrupts mask
pinctrl: bcm2835: Direct GPIO config changes to generic pinctrl
pinctrl: bcm2835: declare pin config as generic
pinctrl: qcom: qcs404: Drop unused UFS_RESET macro
dt-bindings: add documentation for slew rate
...
Pull documentation updates from Jonathan Corbet:
"A fairly routine cycle for docs - lots of typo fixes, some new
documents, and more translations. There's also some LICENSES
adjustments from Thomas"
* tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits)
docs: Bring some order to filesystem documentation
Documentation/locking/lockdep: Drop last two chars of sample states
doc: rcu: Suspicious RCU usage is a warning
docs: driver-api: iio: fix errors in documentation
Documentation/process/howto: Update for 4.x -> 5.x versioning
docs: Explicitly state that the 'Fixes:' tag shouldn't split lines
doc: security: Add kern-doc for lsm_hooks.h
doc: sctp: Merge and clean up rst files
Docs: Correct /proc/stat path
scripts/spdxcheck.py: fix C++ comment style detection
doc: fix typos in license-rules.rst
Documentation: fix admin-guide/README.rst minimum gcc version requirement
doc: process: complete removal of info about -git patches
doc: translations: sync translations 'remove info about -git patches'
perf-security: wrap paragraphs on 72 columns
perf-security: elaborate on perf_events/Perf privileged users
perf-security: document collected perf_events/Perf data categories
perf-security: document perf_events/Perf resource control
sysfs.txt: add note on available attribute macros
docs: kernel-doc: typo "if ... if" -> "if ... is"
...
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v5.1 cycle:
Core changes:
- The big change this time around is the irqchip handling in the
qualcomm pin controllers, closely coupled with the gpiochip. This
rework, in a classic fall-between-the-chairs fashion has been
sidestepped for too long.
The Qualcomm IRQchips using the SPMI and SSBI transport mechanisms
have been rewritten to use hierarchical irqchip. This creates the
base from which I intend to gradually pull support for hierarchical
irqchips into the gpiolib irqchip helpers to cut down on duplicate
code.
We have too many hacks in the kernel because people have been
working around the missing hierarchical irqchip for years, and once
it was there, noone understood it for a while. We are now slowly
adapting to using it.
This is why this pull requests include changes to MFD, SPMI,
IRQchip core and some ARM Device Trees pertaining to the Qualcomm
chip family. Since Qualcomm have so many chips and such large
deployments it is paramount that this platform gets this right, and
now it (hopefully) does.
- Core support for pull-up and pull-down configuration, also from the
device tree. When a simple GPIO chip supports an "off or on" pull-up
or pull-down resistor, we provide a way to set this up using
machine descriptors or device tree.
If more elaborate control of pull up/down (such as resistance shunt
setting) is required, drivers should be phased over to use pin
control. We do not yet provide a userspace ABI for this pull
up-down setting but I suspect the makers are going to ask for it
soon enough. PCA953x is the first user of this new API.
- The GPIO mockup driver has been revamped after some discussion
improving the IRQ simulator in the process.
The idea is to make it possible to use the mockup for both testing
and virtual prototyping, e.g. when you do not yet have a GPIO
expander to play with but really want to get something to develop
code around before hardware is available. It's neat. The blackbox
testing usecase is currently making its way into kernelci.
- ACPI GPIO core preserves non direction flags when updating flags.
- A new device core helper for devm_platform_ioremap_resource() is
funneled through the GPIO tree with Greg's ACK.
New drivers:
- TQ-Systems QTMX86 GPIO controllers (using port-mapped I/O)
- Gateworks PLD GPIO driver (vaccumed up from OpenWrt)
- AMD G-Series PCH (Platform Controller Hub) GPIO driver.
- Fintek F81804 & F81966 subvariants.
- PCA953x now supports NXP PCAL6416.
Driver improvements:
- IRQ support on the Nintendo Wii (Hollywood) GPIO.
- get_direction() support for the MVEBU driver.
- Set the right output level on SAMA5D2.
- Drop the unused irq trigger setting on the Spreadtrum driver.
- Wakeup support for PCA953x.
- A slew of cleanups in the various Intel drivers"
* tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (110 commits)
gpio: gpio-omap: fix level interrupt idling
gpio: amd-fch: Set proper output level for direction_output
x86: apuv2: remove unused variable
gpio: pca953x: Use PCA_LATCH_INT
platform/x86: fix PCENGINES_APU2 Kconfig warning
gpio: pca953x: Fix dereference of irq data in shutdown
gpio: amd-fch: Fix type error found by sparse
gpio: amd-fch: Drop const from resource
gpio: mxc: add check to return defer probe if clock tree NOT ready
gpio: ftgpio: Register per-instance irqchip
gpio: ixp4xx: Add DT bindings
x86: pcengines apuv2 gpio/leds/keys platform driver
gpio: AMD G-Series PCH gpio driver
drivers: depend on HAS_IOMEM for devm_platform_ioremap_resource()
gpio: tqmx86: Set proper output level for direction_output
gpio: sprd: Change to use SoC compatible string
gpio: sprd: Use SoC compatible string instead of wildcard string
gpio: of: Handle both enable-gpio{,s}
gpio: of: Restrict enable-gpio quirk to regulator-gpio
gpio: davinci: use devm_platform_ioremap_resource()
...
Pull driver core updates from Greg KH:
"Here is the big driver core patchset for 5.1-rc1
More patches than "normal" here this merge window, due to some work in
the driver core by Alexander Duyck to rework the async probe
functionality to work better for a number of devices, and independant
work from Rafael for the device link functionality to make it work
"correctly".
Also in here is:
- lots of BUS_ATTR() removals, the macro is about to go away
- firmware test fixups
- ihex fixups and simplification
- component additions (also includes i915 patches)
- lots of minor coding style fixups and cleanups.
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits)
driver core: platform: remove misleading err_alloc label
platform: set of_node in platform_device_register_full()
firmware: hardcode the debug message for -ENOENT
driver core: Add missing description of new struct device_link field
driver core: Fix PM-runtime for links added during consumer probe
drivers/component: kerneldoc polish
async: Add cmdline option to specify drivers to be async probed
driver core: Fix possible supplier PM-usage counter imbalance
PM-runtime: Fix __pm_runtime_set_status() race with runtime resume
driver: platform: Support parsing GpioInt 0 in platform_get_irq()
selftests: firmware: fix verify_reqs() return value
Revert "selftests: firmware: remove use of non-standard diff -Z option"
Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config"
device: Fix comment for driver_data in struct device
kernfs: Allocating memory for kernfs_iattrs with kmem_cache.
sysfs: remove unused include of kernfs-internal.h
driver core: Postpone DMA tear-down until after devres release
driver core: Document limitation related to DL_FLAG_RPM_ACTIVE
PM-runtime: Take suppliers into account in __pm_runtime_set_status()
device.h: Add __cold to dev_<level> logging functions
...
Pull char/misc driver updates from Greg KH:
"Here is the big char/misc driver patch pull request for 5.1-rc1.
The largest thing by far is the new habanalabs driver for their AI
accelerator chip. For now it is in the drivers/misc directory but will
probably move to a new directory soon along with other drivers of this
type.
Other than that, just the usual set of individual driver updates and
fixes. There's an "odd" merge in here from the DRM tree that they
asked me to do as the MEI driver is starting to interact with the i915
driver, and it needed some coordination. All of those patches have
been properly acked by the relevant subsystem maintainers.
All of these have been in linux-next with no reported issues, most for
quite some time"
* tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits)
habanalabs: adjust Kconfig to fix build errors
habanalabs: use %px instead of %p in error print
habanalabs: use do_div for 64-bit divisions
intel_th: gth: Fix an off-by-one in output unassigning
habanalabs: fix little-endian<->cpu conversion warnings
habanalabs: use NULL to initialize array of pointers
habanalabs: fix little-endian<->cpu conversion warnings
habanalabs: soft-reset device if context-switch fails
habanalabs: print pointer using %p
habanalabs: fix memory leak with CBs with unaligned size
habanalabs: return correct error code on MMU mapping failure
habanalabs: add comments in uapi/misc/habanalabs.h
habanalabs: extend QMAN0 job timeout
habanalabs: set DMA0 completion to SOB 1007
habanalabs: fix validation of WREG32 to DMA completion
habanalabs: fix mmu cache registers init
habanalabs: disable CPU access on timeouts
habanalabs: add MMU DRAM default page mapping
habanalabs: Dissociate RAZWI info from event types
misc/habanalabs: adjust Kconfig to fix build errors
...
Pull power management updates from Rafael Wysocki:
"These are PM-runtime framework changes to use ktime instead of jiffies
for accounting, new PM core flag to mark devices that don't need any
form of power management, cpuidle updates including driver API
documentation and a new governor, cpufreq updates including a new
driver for Armada 8K, thermal cleanups and more, some energy-aware
scheduling (EAS) enabling changes, new chips support in the intel_idle
and RAPL drivers and assorted cleanups in some other places.
Specifics:
- Update the PM-runtime framework to use ktime instead of jiffies for
accounting (Thara Gopinath, Vincent Guittot)
- Optimize the autosuspend code in the PM-runtime framework somewhat
(Ladislav Michl)
- Add a PM core flag to mark devices that don't need any form of
power management (Sudeep Holla)
- Introduce driver API documentation for cpuidle and add a new
cpuidle governor for tickless systems (Rafael Wysocki)
- Add Jacobsville support to the intel_idle driver (Zhang Rui)
- Clean up a cpuidle core header file and the cpuidle-dt and ACPI
processor-idle drivers (Yangtao Li, Joseph Lo, Yazen Ghannam)
- Add new cpufreq driver for Armada 8K (Gregory Clement)
- Fix and clean up cpufreq core (Rafael Wysocki, Viresh Kumar, Amit
Kucheria)
- Add support for light-weight tear-down and bring-up of CPUs to the
cpufreq core and use it in the cpufreq-dt driver (Viresh Kumar)
- Fix cpu_cooling Kconfig dependencies, add support for CPU cooling
auto-registration to the cpufreq core and use it in multiple
cpufreq drivers (Amit Kucheria)
- Fix some minor issues and do some cleanups in the davinci,
e_powersaver, ap806, s5pv210, qcom and kryo cpufreq drivers
(Bartosz Golaszewski, Gustavo Silva, Julia Lawall, Paweł Chmiel,
Taniya Das, Viresh Kumar)
- Add a Hisilicon CPPC quirk to the cppc_cpufreq driver (Xiongfeng
Wang)
- Clean up the intel_pstate and acpi-cpufreq drivers (Erwan Velu,
Rafael Wysocki)
- Clean up multiple cpufreq drivers (Yangtao Li)
- Update cpufreq-related MAINTAINERS entries (Baruch Siach, Lukas
Bulwahn)
- Add support for exposing the Energy Model via debugfs and make
multiple cpufreq drivers register an Energy Model to support
energy-aware scheduling (Quentin Perret, Dietmar Eggemann, Matthias
Kaehlcke)
- Add Ice Lake mobile and Jacobsville support to the Intel RAPL
power-capping driver (Gayatri Kammela, Zhang Rui)
- Add a power estimation helper to the operating performance points
(OPP) framework and clean up a core function in it (Quentin Perret,
Viresh Kumar)
- Make minor improvements in the generic power domains (genpd), OPP
and system suspend frameworks and in the PM core (Aditya Pakki,
Douglas Anderson, Greg Kroah-Hartman, Rafael Wysocki, Yangtao Li)"
* tag 'pm-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (80 commits)
cpufreq: kryo: Release OPP tables on module removal
cpufreq: ap806: add missing of_node_put after of_device_is_available
cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
cpufreq: Pass updated policy to driver ->setpolicy() callback
cpufreq: Fix two debug messages in cpufreq_set_policy()
cpufreq: Reorder and simplify cpufreq_update_policy()
cpufreq: Add kerneldoc comments for two core functions
PM / core: Add support to skip power management in device/driver model
cpufreq: intel_pstate: Rework iowait boosting to be less aggressive
cpufreq: intel_pstate: Eliminate intel_pstate_get_base_pstate()
cpufreq: intel_pstate: Avoid redundant initialization of local vars
powercap/intel_rapl: add Ice Lake mobile
ACPI / processor: Set P_LVL{2,3} idle state descriptions
cpufreq / cppc: Work around for Hisilicon CPPC cpufreq
ACPI / CPPC: Add a helper to get desired performance
cpufreq: davinci: move configuration to include/linux/platform_data
cpufreq: speedstep: convert BUG() to BUG_ON()
cpufreq: powernv: fix missing check of return value in init_powernv_pstates()
cpufreq: longhaul: remove unneeded semicolon
cpufreq: pcc-cpufreq: remove unneeded semicolon
..
According to the manpage of poll(2) and also looking at the respective
syscall providing POLLERR in .events is a no-op. So don't recommend
using it.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
gpio updates for v5.1
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
Daniel writes:
typed componented support + i915/snd-hda changes
This is needed by the new MEI-HDCP support in i915, so will need to go
in through drm and drivers-misc trees at least.
* tag 'topic/component-typed-2019-02-11' of git://anongit.freedesktop.org/drm/drm-intel:
i915/snd_hdac: I915 subcomponent for the snd_hdac
components: multiple components for a device
component: Add documentation
It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
It clarifies that the DMA description pointer returned by
`dmaengine_prep_*` function should not be used after submission.
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Fix markup warning: insert a blank line before the hint.
Documentation/driver-api/dmaengine/dmatest.rst:63: WARNING: Unexpected indentation.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
While typing these I think doing an s/component_master/aggregate/
would be useful:
- it's shorter :-)
- I think component/aggregate is much more meaningful naming than
component/puppetmaster or something like that. At least to my
English ear "aggregate" emphasizes much more the "assemble a pile of
things into something bigger" aspect, and there's not really much
of a control hierarchy between aggregate and constituing components.
But that's way more than a quick doc typing exercise ...
Thanks to Ram for commenting on an initial draft of these docs.
v2: Review from Rafael:
- git add Documenation/driver-api/component.rst
- lots of polish to the wording + spelling fixes.
v3: Review from Russell:
- s/framework/helper
- clarify the documentation for component_match_add functions.
v4: Remove a few superflous "This".
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: "C, Ramalingam" <ramalingam.c@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190207232759.14553-1-daniel.vetter@ffwll.ch
If device_link_add() is called twice in a row to create a stateless
device link for the same consumer-supplier pair without an attempt
to delete the link between these calls, and the second caller passes
DL_FLAG_RPM_ACTIVE to it in flags, calling either device_link_del()
or device_link_remove() immediately after that will leave the link's
supplier device with nonzero PM-runtime usage counter, which may
prevent the supplier from being runtime-suspended going forward
until the link is deleted by another invocation of device_link_del()
or device_link_remove() for it.
Even though this is confusing and may lead to subtle issues, trying
to avoid it in the framework also may cause problems to appear, so
document it as a known limitation.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the missing and malformed documentation that kernel-doc and
sphinx warn about. While at it, also add some things to the docs
to fix missing links.
Sadly, the only way I could find to fix this was to add some
trailing whitespace.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new device link flag, DL_FLAG_AUTOPROBE_CONSUMER, to request the
driver core to probe for a consumer driver automatically after binding
a driver to the supplier device on a persistent managed device link.
As unbinding the supplier driver on a managed device link causes the
consumer driver to be detached from its device automatically, this
flag provides a complementary mechanism which is needed to address
some "composite device" use cases.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Even though stateful device links are managed by the driver core in
principle, their creators are allowed and sometimes even expected
to drop references to them via device_link_del() or
device_link_remove(), but that doesn't really play well with the
"persistent" link concept.
If "persistent" managed device links are created from driver
probe callbacks, device_link_add() called to do that will take a
new reference on the link each time the callback runs and those
references will never be dropped, which kind of isn't nice.
This issues arises because of the link reference counting carried
out by device_link_add() for existing links, but that is only done to
avoid deleting device links that may still be necessary, which
shouldn't be a concern for managed (stateful) links. These device
links are managed by the driver core and whoever creates one of them
will need it at least as long as until the consumer driver is detached
from its device and deleting it may be left to the driver core just
fine.
For this reason, rework device_link_add() to apply the reference
counting to stateless links only and make device_link_del() and
device_link_remove() drop references to stateless links only too.
After this change, if called to add a stateful device link for
a consumer-supplier pair for which a stateful device link is
present already, device_link_add() will return the existing link
without incrementing its reference counter. Accordingly,
device_link_del() and device_link_remove() will WARN() and do
nothing when called to drop a reference to a stateful link. Thus,
effectively, all stateful device links will be owned by the driver
core.
In addition, clean up the handling of the link management flags,
DL_FLAG_AUTOREMOVE_CONSUMER and DL_FLAG_AUTOREMOVE_SUPPLIER, so that
(a) they are never set at the same time and (b) if device_link_add()
is called for a consumer-supplier pair with an existing stateful link
between them, the flags of that link will be combined with the flags
passed to device_link_add() to ensure that the life time of the link
is sufficient for all of the callers of device_link_add() for the
same consumer-supplier pair.
Update the device_link_add() kerneldoc comment to reflect the
above changes.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, it is not valid to add a device link from a consumer
driver ->probe callback to a supplier that is still probing too, but
generally this is a valid use case. For example, if the consumer has
just acquired a resource that can only be available if the supplier
is functional, adding a device link to that supplier right away
should be safe (and even desirable arguably), but device_link_add()
doesn't handle that case correctly and the initial state of the link
created by it is wrong then.
To address this problem, change the initial state of device links
added between a probing supplier and a probing consumer to
DL_STATE_CONSUMER_PROBE and update device_links_driver_bound() to
skip such links on the supplier side.
With this change, if the supplier probe completes first,
device_links_driver_bound() called for it will skip the link state
update and when it is called for the consumer, the link state will
be updated to "active". In turn, if the consumer probe completes
first, device_links_driver_bound() called for it will change the
state of the link to "active" and when it is called for the
supplier, the link status update will be skipped.
However, in principle the supplier or consumer probe may still fail
after the link has been added, so modify device_links_no_driver() to
change device links in the "active" or "consumer probe" state to
"dormant" on the supplier side and update __device_links_no_driver()
to change the link state to "available" only if it is "consumer
probe" or "active".
Then, if the supplier probe fails first, the leftover link to the
probing consumer will become "dormant" and device_links_no_driver()
called for the consumer (when its probe fails) will clean it up.
In turn, if the consumer probe fails first, it will either drop the
link, or change its state to "available" and, in the latter case,
when device_links_no_driver() is called for the supplier, it will
update the link state to "dormant". [If the supplier probe fails,
but the consumer probe succeeds, which should not happen as long as
the consumer driver is correct, the link still will be around, but
it will be "dormant" until the supplier is probed again.]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Returning -EAGAIN is no longer supported by pin_config_group_set()
since ad42fc6c84 ("pinctrl: rip out the direct pinconf API")
Remove the relevant section from the documentation.
Signed-off-by: Ramon Fried <ramon.fried@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Replace the remaining documents under Documentation/cpuidle/
with one more complete governor and driver API document for cpuidle
under Documentation/driver-api/pm/.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
