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If the provided fwnode is an OF node, set dev.of_node as well.
Also add an of_node_reused flag to struct platform_device_info and copy
this to the new device. This is needed to avoid pinctrl settings being
requested twice. See 4e75e1d7dac9 ("driver core: add helper to reuse a
device-tree node") for a longer explanation.
Some drivers are just shims that create extra "glue" devices with the
DT device as parent and have the real driver bind to these. In these
cases, the glue device needs to get a reference to the original DT node
in order for the main driver to access properties and child nodes.
For example, the sunxi-musb driver creates such a glue device using
platform_device_register_full(). Consequently, devices attached to
this USB interface don't get associated with DT nodes, if present,
the way they do with EHCI.
This change will allow sunxi-musb and similar drivers to easily
propagate the DT node to child devices as required.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When no file /path was found, the error code of -ENOENT
enumerated in errno-base.h, is returned. Stating clearly that
the file was not found is much more useful for debugging, So
let's be explicit about that.
Signed-off-by: John Zhao <yuankuiz@codeaurora.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 36003d4cf57c ("driver core: Fix PM-runtime for links added
during consumer probe") forgot to add a kerneldoc decription for the
new struct device_link member added by it, so do that now.
Fixes: 36003d4cf57c ("driver core: Fix PM-runtime for links added during consumer probe")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 4c06c4e6cf63 ("driver core: Fix possible supplier PM-usage
counter imbalance") introduced a regression that causes suppliers
to be suspended prematurely for device links added during consumer
driver probe if the initial PM-runtime status of the consumer is
"suspended" and the consumer is resumed after adding the link and
before pm_runtime_put_suppliers() is called. In that case,
pm_runtime_put_suppliers() will drop the rpm_active refcount for
the link by one and (since rpm_active is equal to two after the
preceding consumer resume) the supplier's PM-runtime usage counter
will be decremented, which may cause the supplier to suspend even
though the consumer's PM-runtime status is "active".
For this reason, partially revert commit 4c06c4e6cf63 as the problem
it tried to fix needs to be addressed somewhat differently, and
change pm_runtime_get_suppliers() and pm_runtime_put_suppliers() so
that the latter only drops rpm_active references acquired by the
former. [This requires adding a new field to struct device_link,
but I coulnd't find a cleaner way to address the issue that would
work in all cases.]
This causes pm_runtime_put_suppliers() to effectively ignore device
links added during consumer probe, so device_link_add() doesn't need
to worry about ensuring that suppliers will remain active after
pm_runtime_put_suppliers() for links created with DL_FLAG_RPM_ACTIVE
set and it only needs to bump up rpm_active by one for those links,
so pm_runtime_active_link() is not necessary any more.
Fixes: 4c06c4e6cf63 ("driver core: Fix possible supplier PM-usage counter imbalance")
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Polish the kerneldoc a bit with suggestions from Randy.
v2: Randy found another typo: s/compent/component/
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ramalingam C <ramalingam.c@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Asynchronous driver probing can help much on kernel fastboot, and
this option can provide a flexible way to optimize and quickly verify
async driver probe.
Also it will help in below cases:
* Some driver actually covers several families of HWs, some of which
could use async probing while others don't. So we can't simply
turn on the PROBE_PREFER_ASYNCHRONOUS flag in driver, but use this
cmdline option, like igb driver async patch discussed at
https://www.spinics.net/lists/netdev/msg545986.html
* For SOC (System on Chip) with multiple spi or i2c controllers, most
of the slave spi/i2c devices will be assigned with fixed controller
number, while async probing may make those controllers get different
index for each boot, which prevents those controller drivers to be
async probed. For platforms not using these spi/i2c slave devices,
they can use this cmdline option to benefit from the async probing.
Suggested-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If a stateless device link to a certain supplier with
DL_FLAG_PM_RUNTIME set in the flags is added and then removed by the
consumer driver's probe callback, the supplier's PM-runtime usage
counter will be nonzero after that which effectively causes the
supplier to remain "always on" going forward.
Namely, device_link_add() called to add the link invokes
device_link_rpm_prepare() which notices that the consumer driver is
probing, so it increments the supplier's PM-runtime usage counter
with the assumption that the link will stay around until
pm_runtime_put_suppliers() is called by driver_probe_device(),
but if the link goes away before that point, the supplier's
PM-runtime usage counter will remain nonzero.
To prevent that from happening, first rework pm_runtime_get_suppliers()
and pm_runtime_put_suppliers() to use the rpm_active refounts of device
links and make the latter only drop rpm_active and the supplier's
PM-runtime usage counter for each link by one, unless rpm_active is
one already for it. Next, modify device_link_add() to bump up the
new link's rpm_active refcount and the suppliers PM-runtime usage
counter by two, to prevent pm_runtime_put_suppliers(), if it is
called subsequently, from suspending the supplier prematurely (in
case its PM-runtime usage counter goes down to 0 in there).
Due to the way rpm_put_suppliers() works, this change does not
affect runtime suspend of the consumer ends of new device links (or,
generally, device links for which DL_FLAG_PM_RUNTIME has just been
set).
Fixes: e2f3cd831a28 ("driver core: Fix handling of runtime PM flags in device_link_add()")
Reported-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 4080ab083000 ("PM-runtime: Take suppliers into account in
__pm_runtime_set_status()") introduced a race condition that may
trigger if __pm_runtime_set_status() is used incorrectly (that is,
if it is called when PM-runtime is enabled for the target device
and working).
In that case, if the original PM-runtime status of the device is
RPM_SUSPENDED, a runtime resume of the device may occur after
__pm_runtime_set_status() has dropped its power.lock spinlock
and before deactivating its suppliers, so the suppliers may be
deactivated while the device is PM-runtime-active which may lead
to functional issues.
To avoid that, modify __pm_runtime_set_status() to check whether
or not PM-runtime is enabled for the device before activating its
suppliers (if the new status is RPM_ACTIVE) and either return an
error if that's the case or increment the device's disable_depth
counter to prevent PM-runtime from being enabled for it while
the remaining part of the function is running (disable_depth is
then decremented on the way out).
Fixes: 4080ab083000 ("PM-runtime: Take suppliers into account in __pm_runtime_set_status()")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ACPI 5 added support for GpioInt resources as a way to provide
information about interrupts mediated via a GPIO controller.
Several device buses (e.g. SPI, I2C) have support for retrieving
an IRQ specified via this type of resource, and providing it
directly to the driver as an IRQ number.
This is not currently done for the platform drivers, as platform_get_irq()
does not try to parse GpioInt() resources. This requires drivers to
either have to support only one possible IRQ resource, or to have code
in place to try both as a failsafe.
While there is a possibility of ambiguity for devices that exposes
multiple IRQs, it is easy and feasible to support the common case
of devices that only expose one IRQ which would be of either type
depending on the underlying system's architecture.
This commit adds support for parsing a GpioInt resource in order
to fulfill a request for the index 0 IRQ for a platform device.
Signed-off-by: Enrico Granata <egranata@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://anongit.freedesktop.org/drm/drm-intel into driver-core-next
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
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We need the debugfs fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
- Fix in at_xdmac fr wrongful channel state
- Fix for imx driver for wrong callback invocation
- Fix to bcm driver for interrupt race & transaction abort.
- Fix in dmatest to abort in mapping error
* tag 'dmaengine-fix-5.0-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: dmatest: Abort test in case of mapping error
dmaengine: bcm2835: Fix abort of transactions
dmaengine: bcm2835: Fix interrupt race on RT
dmaengine: imx-dma: fix wrong callback invoke
dmaengine: at_xdmac: Fix wrongfull report of a channel as in use
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"A handful of fixes:
- Fix an MCE corner case bug/crash found via MCE injection testing
- Fix 5-level paging boot crash
- Fix MCE recovery cache invalidation bug
- Fix regression on Xen guests caused by a recent PMD level mremap
speedup optimization"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Make set_pmd_at() paravirt aware
x86/mm/cpa: Fix set_mce_nospec()
x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"irqchip driver fixes: most of them are race fixes for ARM GIC (General
Interrupt Controller) variants, but also a fix for the ARM MMP
(Marvell PXA168 et al) irqchip affecting OLPC keyboards"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Fix ITT_entry_size accessor
irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable
irqchip/gic-v3-its: Gracefully fail on LPI exhaustion
irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID
irqchip/gic-v4: Fix occasional VLPI drop
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"A couple of kernel side fixes:
- Fix the Intel uncore driver on certain hardware configurations
- Fix a CPU hotplug related memory allocation bug
- Remove a spurious WARN()
... plus also a handful of perf tooling fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf script python: Add Python3 support to tests/attr.py
perf trace: Support multiple "vfs_getname" probes
perf symbols: Filter out hidden symbols from labels
perf symbols: Add fallback definitions for GELF_ST_VISIBILITY()
tools headers uapi: Sync linux/in.h copy from the kernel sources
perf clang: Do not use 'return std::move(something)'
perf mem/c2c: Fix perf_mem_events to support powerpc
perf tests evsel-tp-sched: Fix bitwise operator
perf/core: Don't WARN() for impossible ring-buffer sizes
perf/x86/intel: Delay memory deallocation until x86_pmu_dead_cpu()
perf/x86/intel/uncore: Add Node ID mask
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
"An rtmutex (PI-futex) deadlock scenario fix, plus a locking
documentation fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Handle early deadlock return correctly
futex: Fix barrier comment
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set_pmd_at() calls native_set_pmd() unconditionally on x86. This was
fine as long as only huge page entries were written via set_pmd_at(),
as Xen pv guests don't support those.
Commit 2c91bd4a4e2e53 ("mm: speed up mremap by 20x on large regions")
introduced a usage of set_pmd_at() possible on pv guests, leading to
failures like:
BUG: unable to handle kernel paging request at ffff888023e26778
#PF error: [PROT] [WRITE]
RIP: e030:move_page_tables+0x7c1/0xae0
move_vma.isra.3+0xd1/0x2d0
__se_sys_mremap+0x3c6/0x5b0
do_syscall_64+0x49/0x100
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Make set_pmd_at() paravirt aware by just letting it use set_pmd().
Fixes: 2c91bd4a4e2e53 ("mm: speed up mremap by 20x on large regions")
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel@lists.xenproject.org
Cc: boris.ostrovsky@oracle.com
Cc: sstabellini@kernel.org
Cc: hpa@zytor.com
Cc: bp@alien8.de
Cc: torvalds@linux-foundation.org
Link: https://lkml.kernel.org/r/20190210074056.11842-1-jgross@suse.com
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"One PM related driver bugfix and a MAINTAINERS update"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: Update the ocores i2c bus driver maintainer, etc
i2c: omap: Use noirq system sleep pm ops to idle device for suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
"A batch of MIPS fixes for 5.0, nothing too scary.
- A workaround for a Loongson 3 CPU bug is the biggest change, but
still fairly straightforward. It adds extra memory barriers (sync
instructions) around atomics to avoid a CPU bug that can break
atomicity.
- Loongson64 also sees a fix for powering off some systems which
would incorrectly reboot rather than waiting for the power down
sequence to complete.
- We have DT fixes for the Ingenic JZ4740 SoC & the JZ4780-based Ci20
board, and a DT warning fix for the Nexsys4/MIPSfpga board.
- The Cavium Octeon platform sees a further fix to the behaviour of
the pcie_disable command line argument that was introduced in v3.3.
- The VDSO, introduced in v4.4, sees build fixes for configurations
of GCC that were built using the --with-fp-32= flag to specify a
default 32-bit floating point ABI.
- get_frame_info() sees a fix for configurations with
CONFIG_KALLSYMS=n, for which it previously always returned an
error.
- If the MIPS Coherence Manager (CM) reports an error then we'll now
clear that error correctly so that the GCR_ERROR_CAUSE register
will be updated with information about any future errors"
* tag 'mips_fixes_5.0_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
mips: cm: reprime error cause
mips: loongson64: remove unreachable(), fix loongson_poweroff().
MIPS: Remove function size check in get_frame_info()
MIPS: Use lower case for addresses in nexys4ddr.dts
MIPS: Loongson: Introduce and use loongson_llsc_mb()
MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
MIPS: VDSO: Use same -m%-float cflag as the kernel proper
MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
DTS: CI20: Fix bugs in ci20's device tree.
MIPS: DTS: jz4740: Correct interrupt number of DMA core
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Pull block fixes from Jens Axboe:
- NVMe pull request from Christoph, fixing namespace locking when
dealing with the effects log, and a rapid add/remove issue (Keith)
- blktrace tweak, ensuring requests with -1 sectors are shown (Jan)
- link power management quirk for a Smasung SSD (Hans)
- m68k nfblock dynamic major number fix (Chengguang)
- series fixing blk-iolatency inflight counter issue (Liu)
- ensure that we clear ->private when setting up the aio kiocb (Mike)
- __find_get_block_slow() rate limit print (Tetsuo)
* tag 'for-linus-20190209' of git://git.kernel.dk/linux-block:
blk-mq: remove duplicated definition of blk_mq_freeze_queue
Blk-iolatency: warn on negative inflight IO counter
blk-iolatency: fix IO hang due to negative inflight counter
blktrace: Show requests without sector
fs: ratelimit __find_get_block_slow() failure message.
m68k: set proper major_num when specifying module param major_num
libata: Add NOLPM quirk for SAMSUNG MZ7TE512HMHP-000L1 SSD
nvme-pci: fix rapid add remove sequence
nvme: lock NS list changes while handling command effects
aio: initialize kiocb private in case any filesystems expect it.
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Pull mtd fixes from Boris Brezillon:
- Fix a problem with the imx28 ECC engine
- Remove a debug trace introduced in 2b6f0090a333 ("mtd: Check
add_mtd_device() ret code")
- Make sure partitions of size 0 can be registered
- Fix kernel-doc warning in the rawnand core
- Fix the error path of spinand_init() (missing manufacturer cleanup in
a few places)
- Address a problem with the SPI NAND PROGRAM LOAD operation which does
not work as expected on some parts.
* tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd:
mtd: rawnand: gpmi: fix MX28 bus master lockup problem
mtd: Make sure mtd->erasesize is valid even if the partition is of size 0
mtd: Remove a debug trace in mtdpart.c
mtd: rawnand: fix kernel-doc warnings
mtd: spinand: Fix the error/cleanup path in spinand_init()
mtd: spinand: Handle the case where PROGRAM LOAD does not reset the cache
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two very minor fixes: one remove of a #include for an unused header
and a fix of the xen ML address in MAINTAINERS"
* tag 'for-linus-5.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
MAINTAINERS: unify reference to xen-devel list
arch/arm/xen: Remove duplicate header
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
perf trace:
Arnaldo Carvalho de Melo:
Fix handling of probe:vfs_getname when the probed routine is
inlined in multiple places, fixing the collection of the 'filename'
parameter in open syscalls.
perf test:
Gustavo A. R. Silva:
Fix bitwise operator usage in evsel-tp-sched test, which made tat
test always detect fields as signed.
Jiri Olsa:
Filter out hidden symbols from labels, added in systems where the
annobin plugin is used, such as RHEL8, which, if left in place make
the DWARF unwind 'perf test' to fail on PPC.
Tony Jones:
Fix 'perf_event_attr' tests when building with python3.
perf mem/c2c:
Ravi Bangoria:
Fix perf_mem_events on PowerPC.
tools headers UAPI:
Arnaldo Carvalho de Melo:
Sync linux/in.h copy from the kernel sources, silencing a perf build warning.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is a bit larger than normal, as we had not managed to send out a
pull request before traveling for a week without my signing key.
There are multiple code fixes for older bugs, all of which should get
backported into stable kernels:
- tango: one fix for multiplatform configurations broken on other
platforms when tango is enabled
- arm_scmi: device unregistration fix
- iop32x: fix kernel oops from extraneous __init annotation
- pxa: remove a double kfree
- fsl qbman: close an interrupt clearing race
The rest is the usual collection of smaller fixes for device tree
files, on the renesas, allwinner, meson, omap, davinci, qualcomm and
imx platforms.
Some of these are for compile-time warnings, most are for board
specific functionality that fails to work because of incorrect
settings"
* tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
ARM: tango: Improve ARCH_MULTIPLATFORM compatibility
firmware: arm_scmi: provide the mandatory device release callback
ARM: iop32x/n2100: fix PCI IRQ mapping
arm64: dts: add msm8996 compatible to gicv3
ARM: dts: am335x-shc.dts: fix wrong cd pin level
ARM: dts: n900: fix mmc1 card detect gpio polarity
ARM: dts: omap3-gta04: Fix graph_port warning
ARM: pxa: ssp: unneeded to free devm_ allocated data
ARM: dts: r8a7743: Convert to new LVDS DT bindings
soc: fsl: qbman: avoid race in clearing QMan interrupt
arm64: dts: renesas: r8a77965: Enable DMA for SCIF2
arm64: dts: renesas: r8a7796: Enable DMA for SCIF2
arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2
ARM: dts: da850: fix interrupt numbers for clocksource
dt-bindings: imx8mq: Number clocks consecutively
arm64: dts: meson: Fix mmc cd-gpios polarity
ARM: dts: imx6sx: correct backward compatible of gpt
ARM: dts: imx: replace gpio-key,wakeup with wakeup-source property
ARM: dts: vf610-bk4: fix incorrect #address-cells for dspi3
ARM: dts: meson8m2: mxiii-plus: mark the SD card detection GPIO active-low
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Two arm64 fixes for -rc6. They resolve a kernel NULL dereference in
kexec and bogus kernel page table dumping when userspace is configured
for 52-bit virtual addressing.
Summary:
- Fix kernel oops when attemping kexec_file() with a NULL cmdline
- Fix page table output in debugfs when ARM64_USER_VA_BITS_52=y"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kexec_file: handle empty command-line
arm64: ptdump: Don't iterate kernel page tables using PTRS_PER_PXX
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Just two fixes, both going to stable.
- Our support for split pmd page table lock had a bug which could
lead to a crash on mremap() when using the Radix MMU (Power9 only).
- A fix for the PAPR SCM driver (nvdimm) we added last release, which
had a bug where we might mis-handle a hypervisor response leading
to us failing to attach the memory region.
Thanks to: Aneesh Kumar K.V, Oliver O'Halloran"
* tag 'powerpc-5.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/papr_scm: Use the correct bind address
powerpc/radix: Fix kernel crash with mremap()
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull signal fixes from Eric Biederman:
"This contains four small fixes for signal handling. A missing range
check, a regression fix, prioritizing signals we have already started
a signal group exit for, and better detection of synchronous signals.
The confused decision of which signals to handle failed spectacularly
when a timer was pointed at SIGBUS and the stack overflowed. Resulting
in an unkillable process in an infinite loop instead of a SIGSEGV and
core dump"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
signal: Better detection of synchronous signals
signal: Always notice exiting tasks
signal: Always attempt to allocate siginfo for SIGSTOP
signal: Make siginmask safe when passed a signal of 0
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of five minor fixes (although, tecnhincally, the aicxxx
fix is for a major problem in that the driver won't load without it,
but I think the fact it's taken us since 4.10 to discover this
indicates that the user base for these things has declined)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: cxlflash: Prevent deadlock when adapter probe fails
Revert "scsi: libfc: Add WARN_ON() when deleting rports"
scsi: sd_zbc: Fix zone information messages
scsi: target: make the pi_prot_format ConfigFS path readable
scsi: aic94xx: fix module loading
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fix from Joerg Roedel:
"Intel decided to leave the newly added Scalable Mode Feature
default-disabled for now. The patch here accomplishes that"
* tag 'iommu-fixes-v5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Leave scalable mode default off
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX) that
breaks PCIe on I.MX SoCs (Thinh Nguyen)"
* tag 'pci-v5.0-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX)
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This prevents excessive ACPI debug messages from being printed to the
kernel log, which has started to happen after one of the recent ACPICA
commits (Erik Schmauss)"
* tag 'acpi-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: Set debug output flags independent of ACPICA
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The listed maintainer has not been responding to emails for a while.
Add myself as a second maintainer.
Add the platform data include file, which was not listed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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As the prototype has been defined in "include/linux/blk-mq.h", the one
in "block/blk-mq.h" can be removed then.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This is to catch any unexpected negative value of inflight IO counter.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Our test reported the following stack, and vmcore showed that
->inflight counter is -1.
[ffffc9003fcc38d0] __schedule at ffffffff8173d95d
[ffffc9003fcc3958] schedule at ffffffff8173de26
[ffffc9003fcc3970] io_schedule at ffffffff810bb6b6
[ffffc9003fcc3988] blkcg_iolatency_throttle at ffffffff813911cb
[ffffc9003fcc3a20] rq_qos_throttle at ffffffff813847f3
[ffffc9003fcc3a48] blk_mq_make_request at ffffffff8137468a
[ffffc9003fcc3b08] generic_make_request at ffffffff81368b49
[ffffc9003fcc3b68] submit_bio at ffffffff81368d7d
[ffffc9003fcc3bb8] ext4_io_submit at ffffffffa031be00 [ext4]
[ffffc9003fcc3c00] ext4_writepages at ffffffffa03163de [ext4]
[ffffc9003fcc3d68] do_writepages at ffffffff811c49ae
[ffffc9003fcc3d78] __filemap_fdatawrite_range at ffffffff811b6188
[ffffc9003fcc3e30] filemap_write_and_wait_range at ffffffff811b6301
[ffffc9003fcc3e60] ext4_sync_file at ffffffffa030cee8 [ext4]
[ffffc9003fcc3ea8] vfs_fsync_range at ffffffff8128594b
[ffffc9003fcc3ee8] do_fsync at ffffffff81285abd
[ffffc9003fcc3f18] sys_fsync at ffffffff81285d50
[ffffc9003fcc3f28] do_syscall_64 at ffffffff81003c04
[ffffc9003fcc3f50] entry_SYSCALL_64_after_swapgs at ffffffff81742b8e
The ->inflight counter may be negative (-1) if
1) blk-iolatency was disabled when the IO was issued,
2) blk-iolatency was enabled before this IO reached its endio,
3) the ->inflight counter is decreased from 0 to -1 in endio()
In fact the hang can be easily reproduced by the below script,
H=/sys/fs/cgroup/unified/
P=/sys/fs/cgroup/unified/test
echo "+io" > $H/cgroup.subtree_control
mkdir -p $P
echo $$ > $P/cgroup.procs
xfs_io -f -d -c "pwrite 0 4k" /dev/sdg
echo "`cat /sys/block/sdg/dev` target=1000000" > $P/io.latency
xfs_io -f -d -c "pwrite 0 4k" /dev/sdg
This fixes the problem by freezing the queue so that while
enabling/disabling iolatency, there is no inflight rq running.
Note that quiesce_queue is not needed as this only updating iolatency
configuration about which dispatching request_queue doesn't care.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull networking fixes from David Miller:
"This pull request is dedicated to the upcoming snowpocalypse parts 2
and 3 in the Pacific Northwest:
1) Drop profiles are broken because some drivers use dev_kfree_skb*
instead of dev_consume_skb*, from Yang Wei.
2) Fix IWLWIFI kconfig deps, from Luca Coelho.
3) Fix percpu maps updating in bpftool, from Paolo Abeni.
4) Missing station release in batman-adv, from Felix Fietkau.
5) Fix some networking compat ioctl bugs, from Johannes Berg.
6) ucc_geth must reset the BQL queue state when stopping the device,
from Mathias Thore.
7) Several XDP bug fixes in virtio_net from Toshiaki Makita.
8) TSO packets must be sent always on queue 0 in stmmac, from Jose
Abreu.
9) Fix socket refcounting bug in RDS, from Eric Dumazet.
10) Handle sparse cpu allocations in bpf selftests, from Martynas
Pumputis.
11) Make sure mgmt frames have enough tailroom in mac80211, from Felix
Feitkau.
12) Use safe list walking in sctp_sendmsg() asoc list traversal, from
Greg Kroah-Hartman.
13) Make DCCP's ccid_hc_[rt]x_parse_options always check for NULL
ccid, from Eric Dumazet.
14) Need to reload WoL password into bcmsysport device after deep
sleeps, from Florian Fainelli.
15) Remove filter from mask before freeing in cls_flower, from Petr
Machata.
16) Missing release and use after free in error paths of s390 qeth
code, from Julian Wiedmann.
17) Fix lockdep false positive in dsa code, from Marc Zyngier.
18) Fix counting of ATU violations in mv88e6xxx, from Andrew Lunn.
19) Fix EQ firmware assert in qed driver, from Manish Chopra.
20) Don't default Caivum PTP to Y in kconfig, from Bjorn Helgaas"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
net: dsa: b53: Fix for failure when irq is not defined in dt
sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
geneve: should not call rt6_lookup() when ipv6 was disabled
net: Don't default Cavium PTP driver to 'y'
net: broadcom: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: via-velocity: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: tehuti: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: sun: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: fsl_ucc_hdlc: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: fec_mpc52xx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: smsc: epic100: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: dscc4: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: tulip: de2104x: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: defxx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net/mlx5e: Don't overwrite pedit action when multiple pedit used
net/mlx5e: Update hw flows when encap source mac changed
qed*: Advance drivers version to 8.37.0.20
qed: Change verbosity for coalescing message.
qede: Fix system crash on configuring channels.
qed: Consider TX tcs while deriving the max num_queues for PF.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are some small char and misc driver fixes for 5.0-rc6.
Nothing huge here, some more binderfs fixups found as people use it,
and there is a "large" selftest added to validate the binderfs code,
which makes up the majority of this pull request.
There's also some small mei and mic fixes to resolve some reported
issues.
All of these have been in linux-next for over a week with no reported
issues"
* tag 'char-misc-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mic: vop: Fix crash on remove
mic: vop: Fix use-after-free on remove
binderfs: remove separate device_initcall()
fpga: stratix10-soc: fix wrong of_node_put() in init function
mic: vop: Fix broken virtqueues
mei: free read cb on ctrl_wr list flush
samples: mei: use /dev/mei0 instead of /dev/mei
mei: me: add ice lake point device id.
binderfs: respect limit on binder control creation
binder: fix CONFIG_ANDROID_BINDER_DEVICES
selftests: add binderfs selftests
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core fixes for 5.0-rc6.
Well, not so much "driver core" as "debugfs". There's a lot of
outstanding debugfs cleanup patches coming in through different
subsystem trees, and in that process the debugfs core was found that
it really should return errors when something bad happens, to prevent
random files from showing up in the root of debugfs afterward. So
debugfs was fixed up to handle this properly, and then two fixes for
the relay and blk-mq code was needed as it was making invalid
assumptions about debugfs return values.
There's also a cacheinfo fix in here that resolves a tiny issue.
All of these have been in linux-next for over a week with no reported
problems"
* tag 'driver-core-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
blk-mq: protect debugfs_create_files() from failures
relay: check return of create_buf_file() properly
debugfs: debugfs_lookup() should return NULL if not found
debugfs: return error values, not NULL
debugfs: fix debugfs_rename parameter checking
cacheinfo: Keep the old value if of_property_read_u32 fails
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver fixes from Greg KH:
"Here are some small iio and staging driver fixes for 5.0-rc6.
Nothing big, just resolve some reported IIO driver issues, and one
staging driver bug. One staging driver patch was added and then
reverted as well.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
Revert "staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()"
staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()
staging: octeon: fix broken phylib usage
iio: ti-ads8688: Update buffer allocation for timestamps
tools: iio: iio_generic_buffer: make num_loops signed
iio: adc: axp288: Fix TS-pin handling
iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial fixes for 5.0-rc6.
Nothing huge, just a few small fixes for reported issues. The speakup
fix is in here as it is a tty operation issue.
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: fix race between flush_to_ldisc and tty_open
staging: speakup: fix tty-operation NULL derefs
serial: sh-sci: Do not free irqs that have already been freed
serial: 8250_pci: Make PCI class test non fatal
tty: serial: 8250_mtk: Fix potential NULL pointer dereference
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Grek KH:
"Here are some small USB fixes for 5.0-rc6.
Nothing huge, the normal amount of USB gadget fixes as well as some
USB phy fixes. There's also a typec fix as well. Full details are in
the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tcpm: Correct the PPS out_volt calculation
usb: gadget: musb: fix short isoc packets with inventra dma
usb: phy: am335x: fix race condition in _probe
usb: dwc3: exynos: Fix error handling of clk_prepare_enable
usb: phy: fix link errors
usb: gadget: udc: net2272: Fix bitwise and boolean operations
usb: dwc3: gadget: Handle 0 xfer length for OUT EP
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Pull xfs fixes from Darrick Wong:
"Here are a handful of XFS fixes to fix a data corruption problem, a
crasher bug, and a deadlock.
Summary:
- Fix cache coherency problem with writeback mappings
- Fix buffer deadlock when shutting fs down
- Fix a null pointer dereference when running online repair"
* tag 'xfs-5.0-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: set buffer ops when repair probes for btree type
xfs: end sync buffer I/O properly on shutdown error
xfs: eof trim writeback mapping as soon as it is cached
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Pull drm fixes from Dave Airlie:
"Missed fixes last week as had nothing until amdgpu showed up on
Saturday. Other stuff has since rolled in along with some more amdgpu
fixes, so we have two weeks of those, and some i915, vmwgfx, sun4i,
rockchip and omap fixes.
amdgpu/radeon:
- fix crash on passthrough for SI
- fencing fix for shared buffers
- APU hwmon fix
- API powerplay fix
- eDP freesync fix
- PASID mgr locking fix
- KFD warning fix
- DC/powerplay fix
- raven revision ids fix
- vega20 doorbell fix
i915:
- SNB display fix
- SKL srckey mask fix
- ICL DDI clock selection fix
vmwgfx:
- DMA API fix
- IOMMU detection fix
- display fixes
sun4i:
- tcon clock fix
rockchip:
- SPDX identifier fix
omap:
- DSI fixes"
* tag 'drm-fixes-2019-02-08' of git://anongit.freedesktop.org/drm/drm: (28 commits)
drm/omap: dsi: Hack-fix DSI bus flags
drm/omap: dsi: Fix OF platform depopulate
drm/omap: dsi: Fix crash in DSI debug dumps
drm/i915: Try to sanitize bogus DPLL state left over by broken SNB BIOSen
drm/amd/display: Attach VRR properties for eDP connectors
drm/amdkfd: Fix if preprocessor statement above kfd_fill_iolink_info_for_cpu
drm/amdgpu: use spin_lock_irqsave to protect vm_manager.pasid_idr
drm/i915: always return something on DDI clock selection
drm/i915: Fix skl srckey mask bits
drm/vmwgfx: Improve on IOMMU detection
drm/vmwgfx: Fix setting of dma masks
drm/vmwgfx: Also check for crtc status while checking for DU active
drm/vmwgfx: Fix an uninitialized fence handle value
drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
drm/sun4i: tcon: Prepare and enable TCON channel 0 clock at init
drm/amdgpu: fix the incorrect external id for raven series
drm/amdgpu: Implement doorbell self-ring for NBIO 7.4
drm/amd/display: Fix fclk idle state
drm/amdgpu: Transfer fences to dmabuf importer
drm/amd/powerplay: Fix missing break in switch
...
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In the linux kernel MAINTAINERS file, largely
"xen-devel@lists.xenproject.org (moderated for non-subscribers)"
is used to refer to the xen-devel mailing list.
The DRM DRIVERS FOR XEN section entry mentions
xen-devel@lists.xen.org instead, but that is just the same
mailing list as the mailing list above.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
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Since we need multiple components for I915 for different purposes
(Audio & Mei_hdcp), we adopt the subcomponents methodology introduced
by the previous patch (mentioned below).
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Mon Jan 28 17:08:20 2019 +0530
components: multiple components for a device
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by-by: Ramalingam C <ramalinagm.c@intel.com> (commit message)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (code)
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>
Link: https://patchwork.freedesktop.org/patch/msgid/20190207232759.14553-4-daniel.vetter@ffwll.ch
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Component framework is extended to support multiple components for
a struct device. These will be matched with different masters based on
its sub component value.
We are introducing this, as I915 needs two different components
with different subcomponent value, which will be matched to two
different component masters(Audio and HDCP) based on the subcomponent
values.
v2: Add documenation.
v3: Rebase on top of updated documenation.
v4: Review from Rafael:
- Remove redundant "This" from kerneldoc (also in the previous patch)
- Streamline the logic in find_component() a bit.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v1 code)
Signed-off-by: Ramalingam C <ramalingam.c@intel.com> (v1 commit message)
Cc: Ramalingam C <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>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190207232759.14553-2-daniel.vetter@ffwll.ch
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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
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The recent commit fe0937b24ff5 ("x86/mm/cpa: Fold cpa_flush_range() and
cpa_flush_array() into a single cpa_flush() function") accidentally made
the call to make_addr_canonical_again() go away, which breaks
set_mce_nospec().
Re-instate the call to convert the address back into canonical form right
before invoking either CLFLUSH or INVLPG. Rename the function while at it
to be shorter (and less MAGA).
Fixes: fe0937b24ff5 ("x86/mm/cpa: Fold cpa_flush_range() and cpa_flush_array() into a single cpa_flush() function")
Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tony Luck <tony.luck@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Rik van Riel <riel@surriel.com>
Link: https://lkml.kernel.org/r/20190208120859.GH32511@hirez.programming.kicks-ass.net
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commit a6a9be9270c87 ("selftests: firmware: return Kselftest Skip code
for skipped tests") by Shuah modified failures to return the special
error code of $ksft_skip (4). We have a corner case issue where we
*do* want to verify_reqs().
Cc: <stable@vger.kernel.org> # >= 4.18
Fixes: a6a9be9270c87 ("selftests: firmware: return Kselftest Skip code for for skipped tests")
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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