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74002 commits

Author SHA1 Message Date
Hans de Goede
835e1b86ef platform/x86: touchscreen_dmi: Add EFI embedded firmware info support
Sofar we have been unable to get permission from the vendors to put the
firmware for touchscreens listed in touchscreen_dmi in linux-firmware.

Some of the tablets with such a touchscreen have a touchscreen driver, and
thus a copy of the firmware, as part of their EFI code.

This commit adds the necessary info for the new EFI embedded-firmware code
to extract these firmwares, making the touchscreen work OOTB without the
user needing to manually add the firmware.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-10-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-20 14:57:54 +01:00
Vinod Koul
1ce7139436 Merge branch 'topic/ro_wordlength' into next 2020-03-20 19:25:14 +05:30
Srinivas Kandagatla
a9107de4b0 soundwire: stream: Add read_only_wordlength flag to port properties
According to SoundWire Specification Version 1.2.
"A Data Port number X (in the range 0-14) which supports only one
value of WordLength may implement the WordLength field in the
DPX_BlockCtrl1 Register as Read-Only, returning the fixed value of
WordLength in response to reads."

As WSA881x interfaces in PDM mode making the only field "WordLength"
in DPX_BlockCtrl1" fixed and read-only. Behaviour of writing to this
register on WSA881x soundwire slave with Qualcomm Soundwire Controller
is throwing up an error. Not sure how other controllers deal with
writing to readonly registers, but this patch provides a way to avoid
writes to DPN_BlockCtrl1 register by providing a read_only_wordlength
flag in struct sdw_dpn_prop

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200311113545.23773-2-srinivas.kandagatla@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-20 19:24:59 +05:30
Hans de Goede
e4c2c0ff00 firmware: Add new platform fallback mechanism and firmware_request_platform()
In some cases the platform's main firmware (e.g. the UEFI fw) may contain
an embedded copy of device firmware which needs to be (re)loaded into the
peripheral. Normally such firmware would be part of linux-firmware, but in
some cases this is not feasible, for 2 reasons:

1) The firmware is customized for a specific use-case of the chipset / use
with a specific hardware model, so we cannot have a single firmware file
for the chipset. E.g. touchscreen controller firmwares are compiled
specifically for the hardware model they are used with, as they are
calibrated for a specific model digitizer.

2) Despite repeated attempts we have failed to get permission to
redistribute the firmware. This is especially a problem with customized
firmwares, these get created by the chip vendor for a specific ODM and the
copyright may partially belong with the ODM, so the chip vendor cannot
give a blanket permission to distribute these.

This commit adds a new platform fallback mechanism to the firmware loader
which will try to lookup a device fw copy embedded in the platform's main
firmware if direct filesystem lookup fails.

Drivers which need such embedded fw copies can enable this fallback
mechanism by using the new firmware_request_platform() function.

Note that for now this is only supported on EFI platforms and even on
these platforms firmware_fallback_platform() only works if
CONFIG_EFI_EMBEDDED_FIRMWARE is enabled (this gets selected by drivers
which need this), in all other cases firmware_fallback_platform() simply
always returns -ENOENT.

Reported-by: Dave Olsthoorn <dave@bewaar.me>
Suggested-by: Peter Jones <pjones@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-5-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-20 14:54:04 +01:00
Greg Kroah-Hartman
4445eb6d94 Stable shared branch between EFI and driver tree
Stable shared branch to ease the integration of Hans's series to support
 device firmware loaded from EFI boot service memory regions.
 
 [PATCH v12 00/10] efi/firmware/platform-x86: Add EFI embedded fw support
 https://lore.kernel.org/linux-efi/20200115163554.101315-1-hdegoede@redhat.com/
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Merge tag 'stable-shared-branch-for-driver-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into driver-core-next

Ard writes:

Stable shared branch between EFI and driver tree

Stable shared branch to ease the integration of Hans's series to support
device firmware loaded from EFI boot service memory regions.

[PATCH v12 00/10] efi/firmware/platform-x86: Add EFI embedded fw support
https://lore.kernel.org/linux-efi/20200115163554.101315-1-hdegoede@redhat.com/

* tag 'stable-shared-branch-for-driver-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Add embedded peripheral firmware support
  efi: Export boot-services code and data as debugfs-blobs
2020-03-20 14:50:48 +01:00
Yafang Shao
1066d1b697 psi: Move PF_MEMSTALL out of task->flags
The task->flags is a 32-bits flag, in which 31 bits have already been
consumed. So it is hardly to introduce other new per process flag.
Currently there're still enough spaces in the bit-field section of
task_struct, so we can define the memstall state as a single bit in
task_struct instead.
This patch also removes an out-of-date comment pointed by Matthew.

Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lkml.kernel.org/r/1584408485-1921-1-git-send-email-laoar.shao@gmail.com
2020-03-20 13:06:19 +01:00
Johannes Weiner
36b238d571 psi: Optimize switching tasks inside shared cgroups
When switching tasks running on a CPU, the psi state of a cgroup
containing both of these tasks does not change. Right now, we don't
exploit that, and can perform many unnecessary state changes in nested
hierarchies, especially when most activity comes from one leaf cgroup.

This patch implements an optimization where we only update cgroups
whose state actually changes during a task switch. These are all
cgroups that contain one task but not the other, up to the first
shared ancestor. When both tasks are in the same group, we don't need
to update anything at all.

We can identify the first shared ancestor by walking the groups of the
incoming task until we see TSK_ONCPU set on the local CPU; that's the
first group that also contains the outgoing task.

The new psi_task_switch() is similar to psi_task_change(). To allow
code reuse, move the task flag maintenance code into a new function
and the poll/avg worker wakeups into the shared psi_group_change().

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200316191333.115523-3-hannes@cmpxchg.org
2020-03-20 13:06:19 +01:00
Johannes Weiner
b05e75d611 psi: Fix cpu.pressure for cpu.max and competing cgroups
For simplicity, cpu pressure is defined as having more than one
runnable task on a given CPU. This works on the system-level, but it
has limitations in a cgrouped reality: When cpu.max is in use, it
doesn't capture the time in which a task is not executing on the CPU
due to throttling. Likewise, it doesn't capture the time in which a
competing cgroup is occupying the CPU - meaning it only reflects
cgroup-internal competitive pressure, not outside pressure.

Enable tracking of currently executing tasks, and then change the
definition of cpu pressure in a cgroup from

	NR_RUNNING > 1

to

	NR_RUNNING > ON_CPU

which will capture the effects of cpu.max as well as competition from
outside the cgroup.

After this patch, a cgroup running `stress -c 1` with a cpu.max
setting of 5000 10000 shows ~50% continuous CPU pressure.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200316191333.115523-2-hannes@cmpxchg.org
2020-03-20 13:06:18 +01:00
Paul Turner
46a87b3851 sched/core: Distribute tasks within affinity masks
Currently, when updating the affinity of tasks via either cpusets.cpus,
or, sched_setaffinity(); tasks not currently running within the newly
specified mask will be arbitrarily assigned to the first CPU within the
mask.

This (particularly in the case that we are restricting masks) can
result in many tasks being assigned to the first CPUs of their new
masks.

This:
 1) Can induce scheduling delays while the load-balancer has a chance to
    spread them between their new CPUs.
 2) Can antogonize a poor load-balancer behavior where it has a
    difficult time recognizing that a cross-socket imbalance has been
    forced by an affinity mask.

This change adds a new cpumask interface to allow iterated calls to
distribute within the intersection of the provided masks.

The cases that this mainly affects are:
 - modifying cpuset.cpus
 - when tasks join a cpuset
 - when modifying a task's affinity via sched_setaffinity(2)

Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Qais Yousef <qais.yousef@arm.com>
Tested-by: Qais Yousef <qais.yousef@arm.com>
Link: https://lkml.kernel.org/r/20200311010113.136465-1-joshdon@google.com
2020-03-20 13:06:18 +01:00
Eric Biggers
e98ad46475 fscrypt: add FS_IOC_GET_ENCRYPTION_NONCE ioctl
Add an ioctl FS_IOC_GET_ENCRYPTION_NONCE which retrieves the nonce from
an encrypted file or directory.  The nonce is the 16-byte random value
stored in the inode's encryption xattr.  It is normally used together
with the master key to derive the inode's actual encryption key.

The nonces are needed by automated tests that verify the correctness of
the ciphertext on-disk.  Except for the IV_INO_LBLK_64 case, there's no
way to replicate a file's ciphertext without knowing that file's nonce.

The nonces aren't secret, and the existing ciphertext verification tests
in xfstests retrieve them from disk using debugfs or dump.f2fs.  But in
environments that lack these debugging tools, getting the nonces by
manually parsing the filesystem structure would be very hard.

To make this important type of testing much easier, let's just add an
ioctl that retrieves the nonce.

Link: https://lore.kernel.org/r/20200314205052.93294-2-ebiggers@kernel.org
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-03-19 21:56:54 -07:00
Christian Brauner
8511d72f14 sysfs: fix static inline declaration of sysfs_groups_change_owner()
The CONFIG_SYSFS declaration of sysfs_group_change_owner() is different
from the !CONFIG_SYSFS version and thus causes build failurs when
!CONFIG_SYSFS is set.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 303a42769c ("sysfs: add sysfs_group{s}_change_owner()")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19 21:17:20 -07:00
Steven Rostedt (VMware)
bc1a72afdc ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()
When the ring buffer was first created, the iterator followed the normal
producer/consumer operations where it had both a peek() operation, that just
returned the event at the current location, and a read(), that would return
the event at the current location and also increment the iterator such that
the next peek() or read() will return the next event.

The only use of the ring_buffer_read() is currently to move the iterator to
the next location and nothing now actually reads the event it returns.
Rename this function to its actual use case to ring_buffer_iter_advance(),
which also adds the "iter" part to the name, which is more meaningful. As
the timestamp returned by ring_buffer_read() was never used, there's no
reason that this new version should bother having returning it. It will also
become a void function.

Link: http://lkml.kernel.org/r/20200317213416.018928618@goodmis.org

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-03-19 19:11:19 -04:00
Steven Rostedt (VMware)
ff895103a8 tracing: Save off entry when peeking at next entry
In order to have the iterator read the buffer even when it's still updating,
it requires that the ring buffer iterator saves each event in a separate
location outside the ring buffer such that its use is immutable.

There's one use case that saves off the event returned from the ring buffer
interator and calls it again to look at the next event, before going back to
use the first event. As the ring buffer iterator will only have a single
copy, this use case will no longer be supported.

Instead, have the one use case create its own buffer to store the first
event when looking at the next event. This way, when looking at the first
event again, it wont be corrupted by the second read.

Link: http://lkml.kernel.org/r/20200317213415.722539921@goodmis.org

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-03-19 17:48:36 -04:00
Ingo Molnar
409e1a3140 Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-03-19 15:01:45 +01:00
Nagarjuna Kristam
5a40fc4b93 phy: tegra: xusb: Add support to get companion USB 3 port
Tegra XUSB host, device mode driver requires the USB 3 companion port
number for corresponding USB 2 port. Add API to retrieve the same.

Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-by: JC Kuo <jckuo@nvidia.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2020-03-19 13:59:46 +01:00
Marc Zyngier
f3a059219b irqchip/gic-v4.1: Ensure mutual exclusion between vPE affinity change and RD access
Before GICv4.1, all operations would be serialized with the affinity
changes by virtue of using the same ITS command queue. With v4.1, things
change, as invalidations (and a number of other operations) are issued
using the redistributor MMIO frame.

We must thus make sure that these redistributor accesses cannot race
against aginst the affinity change, or we may end-up talking to the
wrong redistributor.

To ensure this, we expand the irq_to_cpuid() helper to take a spinlock
when the LPI is mapped to a vLPI (a new per-VPE lock) on each operation
that requires mutual exclusion.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20200304203330.4967-4-maz@kernel.org
2020-03-19 11:21:58 +00:00
Marc Zyngier
0b04758b00 irqchip/gic-v3: Use SGIs without active state if offered
To allow the direct injection of SGIs into a guest, the GICv4.1
architecture has to sacrifice the Active state so that SGIs look
a lot like LPIs (they are injected by the same mechanism).

In order not to break existing software, the architecture gives
offers guests OSs the choice: SGIs with or without an active
state. It is the hypervisors duty to honor the guest's choice.

For this, the architecture offers a discovery bit indicating whether
the GIC supports GICv4.1 SGIs (GICD_TYPER2.nASSGIcap), and another
bit indicating whether the guest wants Active-less SGIs or not
(controlled by GICD_CTLR.nASSGIreq).

A hypervisor not supporting GICv4.1 SGIs would leave nASSGIcap
clear, and a guest not knowing about GICv4.1 SGIs (or definitely
wanting an Active state) would leave nASSGIreq clear (both being
thankfully backward compatible with older revisions of the GIC).

Since Linux is perfectly happy without an active state on SGIs,
inform the hypervisor that we'll use that if offered.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20200304203330.4967-2-maz@kernel.org
2020-03-19 11:11:21 +00:00
Thomas Gleixner
048495eb28 - Avoid creating dead devices by flagging the driver with OF_POPULATED
in order to prevent the platform to create another device (Saravana Kannan)
 
 - Remove unused includes from imx family drivers (Anson Huang)
 
 - timer-dm-ti rework to prepare for pwm and suspend support (Lokesh Vutla)
 
 - Fix the rate for the global clock on the pit64b (Claudiu Beznea)
 
 - Fix timer-cs5535 by requesting an irq with non-NULL dev_id (Afzal Mohammed)
 
 - Replace setup_irq() by request_irq() (Afzal Mohammed)
 
 - Add support for the TCU of X1000 (Zhou Yanjie)
 
 - Drop the bogus omap_dm_timer_of_set_source() function (Suman Anna)
 
 - Do not update the counter when updating the period in order to
   prevent a disruption when the pwm is used (Lokesh Vutla)
 
 - Improve owl_timer_init() failure messages (Matheus Castello)
 
 - Add driver for the Ingenic JZ47xx OST (Maarten ter Huurne)
 
 - Pass the interrupt and the shutdown callbacks in the init function
   for ast2600 support (Joel Stanley)
 
 - Add the ast2600 compatible string for the fttmr010 (Joel Stanley)
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Merge tag 'timers-v5.7' of https://git.linaro.org/people/daniel.lezcano/linux into timers/core

Pull clockevent/clocksource updates from Daniel Lezcano:

- Avoid creating dead devices by flagging the driver with OF_POPULATED
  in order to prevent the platform to create another device (Saravana Kannan)

- Remove unused includes from imx family drivers (Anson Huang)

- timer-dm-ti rework to prepare for pwm and suspend support (Lokesh Vutla)

- Fix the rate for the global clock on the pit64b (Claudiu Beznea)

- Fix timer-cs5535 by requesting an irq with non-NULL dev_id (Afzal Mohammed)

- Replace setup_irq() by request_irq() (Afzal Mohammed)

- Add support for the TCU of X1000 (Zhou Yanjie)

- Drop the bogus omap_dm_timer_of_set_source() function (Suman Anna)

- Do not update the counter when updating the period in order to
  prevent a disruption when the pwm is used (Lokesh Vutla)

- Improve owl_timer_init() failure messages (Matheus Castello)

- Add driver for the Ingenic JZ47xx OST (Maarten ter Huurne)

- Pass the interrupt and the shutdown callbacks in the init function
  for ast2600 support (Joel Stanley)

- Add the ast2600 compatible string for the fttmr010 (Joel Stanley)
2020-03-19 09:39:48 +01:00
Manivannan Sadhasivam
e6b0de469c bus: mhi: core: Add uevent support for module autoloading
Add uevent support to MHI bus so that the client drivers can be autoloaded
by udev when the MHI devices gets created. The client drivers are
expected to provide MODULE_DEVICE_TABLE with the MHI id_table struct so
that the alias can be exported.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-13-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:05 +01:00
Manivannan Sadhasivam
189ff97cca bus: mhi: core: Add support for data transfer
Add support for transferring data between external modem and host
processor using MHI protocol.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/988

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted the data transfer patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-12-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:05 +01:00
Manivannan Sadhasivam
1d3173a3ba bus: mhi: core: Add support for processing events from client device
This commit adds support for processing the MHI data and control
events from the client device. The client device can report various
events such as EE events, state change events by interrupting the
host through IRQ and adding events to the event rings allocated by
the host during initialization.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/988

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted the data transfer patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-11-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:05 +01:00
Manivannan Sadhasivam
6fdfdd2732 bus: mhi: core: Add support for downloading RDDM image during panic
MHI protocol supports downloading RDDM (RAM Dump) image from the
device through BHIE. This is useful to debugging as the RDDM image
can capture the firmware state.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/989

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted the data transfer patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-10-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:05 +01:00
Manivannan Sadhasivam
3000f85b8f bus: mhi: core: Add support for basic PM operations
This commit adds support for basic MHI PM operations such as
mhi_async_power_up, mhi_sync_power_up, and mhi_power_down. These
routines places the MHI bus into respective power domain states
and calls the state_transition APIs when necessary. The MHI
controller driver is expected to call these PM routines for
MHI powerup and powerdown.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/989

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted the pm patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-8-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Manivannan Sadhasivam
a6e2e3522f bus: mhi: core: Add support for PM state transitions
This commit adds support for transitioning the MHI states as a
part of the power management operations. Helpers functions are
provided for the state transitions, which will be consumed by the
actual power management routines.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/989

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[jhugo: removed dma_zalloc_coherent() and fixed several bugs]
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
[mani: splitted the pm patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-7-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Manivannan Sadhasivam
6cd330ae76 bus: mhi: core: Add support for ringing channel/event ring doorbells
This commit adds support for ringing channel and event ring doorbells
by MHI host. The MHI host can use the channel and event ring doorbells
for notifying the client device about processing transfer and event
rings which it has queued using MMIO registers.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/989

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted from pm patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-6-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Manivannan Sadhasivam
da1c4f8569 bus: mhi: core: Add support for creating and destroying MHI devices
This commit adds support for creating and destroying MHI devices. The
MHI devices binds to the MHI channels and are used to transfer data
between MHI host and client device.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/989

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted from pm patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-5-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Manivannan Sadhasivam
e755cadb01 bus: mhi: core: Add support for registering MHI client drivers
This commit adds support for registering MHI client drivers with the
MHI stack. MHI client drivers binds to one or more MHI devices inorder
to sends and receive the upper-layer protocol packets like IP packets,
modem control messages, and diagnostics messages over MHI bus.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/987

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Manivannan Sadhasivam
0cbf260820 bus: mhi: core: Add support for registering MHI controllers
This commit adds support for registering MHI controller drivers with
the MHI stack. MHI controller drivers manages the interaction with the
MHI client devices such as the external modems and WiFi chipsets. They
are also the MHI bus master in charge of managing the physical link
between the host and client device.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/987

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[jhugo: added static config for controllers and fixed several bugs]
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
[mani: removed DT dependency, splitted and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200220095854.4804-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:04 +01:00
Yangtao Li
8b977c5498 nvmem: core: add nvmem_cell_read_u64
Add nvmem_cell_read_u64() helper to ease read of an u64 value on consumer
side. This helper is useful on some sunxi platform that has 64 bits data
cells stored in no volatile memory.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200310132257.23358-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:02 +01:00
Arnd Bergmann
8067c0b0c6 rtc/ia64: remove legacy efirtc driver
There are two EFI RTC drivers, the original drivers/char/efirtc.c
driver and the more modern drivers/rtc/rtc-efi.c.

Both implement the same interface, but the new one does so
in a more portable way.

Move everything over to that one and remove the old one.

Cc: linux-ia64@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200226224322.187960-1-alexandre.belloni@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:02 +01:00
Chanwoo Choi
b52cc1bb95 extcon: Remove unneeded extern keyword from extcon-provider.h
The commit tb7365587f513 ("extcon: Remove unneeded extern keyword
from extcon.h") removes the unneeded extern keyword from extcon header
file. But, The commit tb7365587f513 has missed that deletes 'extern'
keyword from extcon-provider.h. So that it deletes extern keyword
from extcon-provider.h.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20200217104728.29330-1-cw00.choi@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-19 07:41:01 +01:00
Al Viro
39f16c1c0f x86: get rid of put_user_try in {ia32,x32}_setup_rt_frame()
Straightforward, except for compat_save_altstack_ex() stuck in those.
Replace that thing with an analogue that would use unsafe_put_user()
instead of put_user_ex() (called unsafe_compat_save_altstack()) and
be done with that...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-19 00:37:49 -04:00
David S. Miller
79e28519ac mlx5-updates-2020-03-17
1) Compiler warnings and cleanup for the connection tracking series
 2) Bug fixes for the connection tracking series
 3) Fix devlink port register sequence
 4) Last five patches in the series, By Eli cohen
    Add the support for forwarding traffic between two eswitch uplink
    representors (Hairpin for eswitch), using mlx5 termination tables
    to change the direction of a packet in hw from RX to TX pipeline.
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Merge tag 'mlx5-updates-2020-03-17' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2020-03-17

1) Compiler warnings and cleanup for the connection tracking series
2) Bug fixes for the connection tracking series
3) Fix devlink port register sequence
4) Last five patches in the series, By Eli cohen
   Add the support for forwarding traffic between two eswitch uplink
   representors (Hairpin for eswitch), using mlx5 termination tables
   to change the direction of a packet in hw from RX to TX pipeline.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-18 19:13:37 -07:00
Daniel Borkmann
357b6cc583 netfilter: revert introduction of egress hook
This reverts the following commits:

  8537f78647 ("netfilter: Introduce egress hook")
  5418d3881e ("netfilter: Generalize ingress hook")
  b030f194ae ("netfilter: Rename ingress hook include file")

>From the discussion in [0], the author's main motivation to add a hook
in fast path is for an out of tree kernel module, which is a red flag
to begin with. Other mentioned potential use cases like NAT{64,46}
is on future extensions w/o concrete code in the tree yet. Revert as
suggested [1] given the weak justification to add more hooks to critical
fast-path.

  [0] https://lore.kernel.org/netdev/cover.1583927267.git.lukas@wunner.de/
  [1] https://lore.kernel.org/netdev/20200318.011152.72770718915606186.davem@davemloft.net/

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Miller <davem@davemloft.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Nacked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-18 16:35:48 -07:00
Mauro Carvalho Chehab
bd3ebed930
regulator: driver.h: fix regulator_map_* function names
The toolchain produces a warning on this driver when building
the docs:

	./include/linux/regulator/driver.h:284: WARNING: Unknown target name: "regulator_regmap_x_voltage".

While fixing it, we notices that there's no function names
with the above pattern. It seems that some previous patch
renamed it to regulator_map_* instead.

So, change the function name, replacing "x" by "*", with is
a more used way to add a wildcard, and escape those with
``literal`` markup, in order to avoid the toolchain to think
that this is a link to some existing document chapter.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/b9f5687bcf981a88c9d1fd04d759a540fda53a99.1584456635.git.mchehab+huawei@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-18 21:57:20 +00:00
Balbir Singh
e598a72fae block/genhd: Notify udev about capacity change
Allow block/genhd to notify user space (via udev) about disk size changes
using a new helper set_capacity_revalidate_and_notify(), which is a wrapper
on top of set_capacity(). set_capacity_revalidate_and_notify() will only
notify via udev if the current capacity or the target capacity is not zero
and iff the capacity changes.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Someswarudu Sangaraju <ssomesh@amazon.com>
Signed-off-by: Balbir Singh <sblbir@amazon.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-18 15:13:21 -06:00
Linus Walleij
2644f912b4 backlight: pwm_bl: Switch to full GPIO descriptor
The PWM backlight still supports passing a enable GPIO line as
platform data using the legacy <linux/gpio.h> API.

It turns out that ever board using this mechanism except one
is pass .enable_gpio = -1. So we drop all these cargo-culted -1's
from all instances of this platform data in the kernel.

The remaning board, Palm TC, is converted to pass a machine
descriptior table with the "enable" GPIO instead, and delete the
platform data entry for enable_gpio and the code handling it
and things should work smoothly with the new API.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-18 15:05:57 +00:00
Greg Kroah-Hartman
526ee72dfd debugfs: remove return value of debugfs_create_file_size()
No one checks the return value of debugfs_create_file_size, as it's not
needed, so make the return value void, so that no one tries to do so in
the future.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200309163640.237984-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 13:35:29 +01:00
Alexandru Ardelean
86a78b1cfc uio: add resource managed devm_uio_register_device() function
This change adds a resource managed equivalent of uio_register_device().
Not adding devm_uio_unregister_device(), since the intent is to discourage
it's usage. Having such a function may allow some bad driver designs. Most
users of devm_*register*() functions rarely use the unregister equivalents.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20200306161853.25368-1-alexandru.ardelean@analog.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 12:34:10 +01:00
Qiang Su
05d67ec3ca UIO: fix up inapposite whiteplace in uio head file
Whitespace is used in the inapposite place,
which makes checkpatch complain.

Signed-off-by: Qiang Su <suqiang4@huawei.com>
Link: https://lore.kernel.org/r/20200306070359.71398-1-suqiang4@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 12:34:10 +01:00
Zhenzhong Duan
2668dba6df misc: move FLASH_MINOR into miscdevice.h and fix conflicts
FLASH_MINOR is used in both drivers/char/nwflash.c and
drivers/sbus/char/flash.c with conflict minor numbers.

Move all the definitions of FLASH_MINOR into miscdevice.h.
Rename FLASH_MINOR for drivers/char/nwflash.c to NWFLASH_MINOR
and FLASH_MINOR for drivers/sbus/char/flash.c to SBUS_FLASH_MINOR.

Link: https://lore.kernel.org/lkml/20200120221323.GJ15860@mit.edu/t/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Link: https://lore.kernel.org/r/20200311071654.335-3-zhenzhong.duan@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 12:27:04 +01:00
Zhenzhong Duan
6ce6ae7c17 misc: cleanup minor number definitions in c file into miscdevice.h
HWRNG_MINOR and RNG_MISCDEV_MINOR are duplicate definitions, use
unified HWRNG_MINOR instead and moved into miscdevice.h

ANSLCD_MINOR and LCD_MINOR are duplicate definitions, use unified
LCD_MINOR instead and moved into miscdevice.h

MISCDEV_MINOR is renamed to PXA3XX_GCU_MINOR and moved into
miscdevice.h

Other definitions are just moved without any change.

Link: https://lore.kernel.org/lkml/20200120221323.GJ15860@mit.edu/t/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Build-tested-by: Willy TARREAU <wtarreau@haproxy.com>
Build-tested-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/20200311071654.335-2-zhenzhong.duan@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18 12:27:03 +01:00
Greg Kroah-Hartman
281d90e24f First set of new IIO device support, fatures and cleanups for the 5.7 cycle
Includes changes for the counter subsystem
 
 Core Feature
 * Explicitly handle sysfs values in dB, including correctly handling the
   needed postfix dB.
 * Add a TODO to suggest suitable activities for new contributors to IIO now
   the vast majority of drivers are out of staging (and the remaining ones
   there are 'hard'). Also update the TODO in staging to remove stale entries.
 
 Staging graduations
 * ad7192 ADC.
 
 New device support
 * ad5770r
   - New driver for this 6 channel DAC including DT bindings.
 * ad8366
   - Add supprot for the hmc1119 attenuator.
 * al3010
   - New driver supporting this Dyna-image light sensors.
   - Power management and DT bindings added in additional patches.
 * atlas-sensor
   - Add support for atlas DO-SM device.  Reads disolved oxygen in a solution.
 * gpap002x00f
   - New driver and bindings to support the GP2AP002A00F and GP2AP002S00F light
     and proximity sensors. There is some limited existing support in
     input.  The intent is to drop this driver once IIO driver is in place.
 * hmc425a
   - New driver for this attenuator.
 * icp10100
   - New driver for this presure sensor.
 * ltc2632
   - Add support for the ltc2636 8 channel DAC. Includes bindings and some
     tidying up of the driver.
 * inv_mpu6050
   - Support IAM20680, ICM20609, ICM20689 and ICM20690.
     Includes related tidy up and rework of low pass filter bandwidth
     handling to give suitable values for all chips.
 
 Binding conversions to yaml or missing bindings docs.
 * atlas-sensor, including consolidation of previous 3 separate docs into 1.
 * ad7923, previously no doc.
 * max1363, split into max1238 and max1363 to simplify yaml.
 * stm32-adc
 
 Features
 * (counter) 104-quad-8
   - Support a filter clock prescaler.
   - Support reporting of encoder cable status.
 * ad7124
   - Low pass filter support.
   - Debugfs interface to access registers directly.
 * ad8366
   - Support control of hardware gain.
 * inv_mpu6050
   - Runtime pm with autosuspend.
 * npcm adc
   - Add reset support. This is a breaking change if DT is not in sync,
     however this device is a BMC so the ecosystem is closed enought that
     this should not be a problem.
 * srf04
   - Add power management with DT bindings for the GPIO.
 * stm32-timer-trigger
   - Power management.
 * (counter) stm32-timer-cnt
   - Power management.
 * vcnl4000
   - Enable runtime PM for devices that don't use on demand measurement.
 
 Cleanups and minor fixes
 * core
   - Avoid double read when using debugfs.  Whilst we provide no guarantees
     on lack of side effects using the debugfs interfaces, this one is
     generate unexpected results so let us tidy it up.
 * dac/Kconfig
   - Alphabetic order.
 * ad5755
   - Grammar and minor other fixes.
 * ad7124
   - Fail probe if get_voltage fails as no meaningful readings can be had
     without knowing the external reference.
   - Switch to selection between different channel attributes rather than
     building the arrays at runtime.
   - Remove the spi_device_id table as the driver cannot be probled without
     more information that can be provided without dt.
   - Update sysfs docs to provide more inormation and bring remaining docs for
     this part out of staging.
 * ad9292
   - Use new SPI transfer delay structure.
 * adis library
   - Add unlocked version of adis_initial_startup and refactor the function.
   - Add a product ID santiy check.
   - Add support for different self test registers.
   - Use new SPI delay structure.
   - Add new docs and tidy up existing.
 * adis16136
   - Initialize adis_data statically.
 * adis16400
   - Initialize adis_data statically.
 * adis16460
   - Use core __adis_initial_Startup now it supports everything needed.
 * adis16480
   - Initialize adis_data statically.
   - Use core __adis_initial_startup now it supports everything needed.
 * al3320a
   - Add missing DT binding docs.
   - Tidy up code formatting.
   - Simplify error paths using devm_add_action_or_reset.
   - Ensure autoloading works by adding the of_match_table.
 * atlas-sensor
   - Drop false requirement for interrupt line, the value can be polled using
     a sysfs or hrtimer type trigger.
 * exynos-adc
   - Silence warning message on deferring probe.
 * gp2ap002
   - Greatly simplify the Lux LUT.
   - Reorder actions around buffer setup and tear down as part of a sub-system
     wide standardization of these.
 * inv_mpu6050
   - Various lttle tidyups.
   - Simpliy I2C aux MUX handling by enabling it only at startup. It never
     needs to be disabled.
   - Simplify polling rate when magnetometer enabled by putting only under
     control of userspace.
   - Always execute full reset on devices supporting spi. It does no harm
     when using i2c and makes for simpler code.
   - Reduce over the top sleep times for vddio regulator power up.
   - Greatly simplify power and engine management.
   - Fix some delays in polled reads (only visible due to other changes)
   - Stop preventing sampling rate changes whilst running as there is no
     adverse consequence of doing so.
   - Prevent attempting to read the temperature if neither accel nor
     gyro is enabled.
 * lmp9100
   - Reorder actions around buffer setup and tear down as part of a sub-system
     wide standardization of these.
 * max1118
   - Use new SPI transfer delay structure.
 * mcp320x
   - Use new SPI transfer delay structure.
 * si1133
   - Read full 24 bit signed integer instead o dropping last 8 bits of value.
     Not a critical fix as just adds precision.
 * st_sensors
   - Use st_sensors_dev_name_probe instead of open coded version in st_accel
   - Handle potential memory allocation failure.
 * st_lsm6dsx
   - Fix some wrong structure element naming in documentation.
   - Add missing return value check.
 * stm32_timer_cnt
   - Drop some unused left over IIO headers from this count subsystem driver.
   - Ensure the clock is enabled in master mode.  Theoretical issue rather
     than one known to happen in the wild.
 * tlc4541
   - Use new SPI delay structure.
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Merge tag 'iio-5.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of new IIO device support, fatures and cleanups for the 5.7 cycle

Includes changes for the counter subsystem

Core Feature
* Explicitly handle sysfs values in dB, including correctly handling the
  needed postfix dB.
* Add a TODO to suggest suitable activities for new contributors to IIO now
  the vast majority of drivers are out of staging (and the remaining ones
  there are 'hard'). Also update the TODO in staging to remove stale entries.

Staging graduations
* ad7192 ADC.

New device support
* ad5770r
  - New driver for this 6 channel DAC including DT bindings.
* ad8366
  - Add supprot for the hmc1119 attenuator.
* al3010
  - New driver supporting this Dyna-image light sensors.
  - Power management and DT bindings added in additional patches.
* atlas-sensor
  - Add support for atlas DO-SM device.  Reads disolved oxygen in a solution.
* gpap002x00f
  - New driver and bindings to support the GP2AP002A00F and GP2AP002S00F light
    and proximity sensors. There is some limited existing support in
    input.  The intent is to drop this driver once IIO driver is in place.
* hmc425a
  - New driver for this attenuator.
* icp10100
  - New driver for this presure sensor.
* ltc2632
  - Add support for the ltc2636 8 channel DAC. Includes bindings and some
    tidying up of the driver.
* inv_mpu6050
  - Support IAM20680, ICM20609, ICM20689 and ICM20690.
    Includes related tidy up and rework of low pass filter bandwidth
    handling to give suitable values for all chips.

Binding conversions to yaml or missing bindings docs.
* atlas-sensor, including consolidation of previous 3 separate docs into 1.
* ad7923, previously no doc.
* max1363, split into max1238 and max1363 to simplify yaml.
* stm32-adc

Features
* (counter) 104-quad-8
  - Support a filter clock prescaler.
  - Support reporting of encoder cable status.
* ad7124
  - Low pass filter support.
  - Debugfs interface to access registers directly.
* ad8366
  - Support control of hardware gain.
* inv_mpu6050
  - Runtime pm with autosuspend.
* npcm adc
  - Add reset support. This is a breaking change if DT is not in sync,
    however this device is a BMC so the ecosystem is closed enought that
    this should not be a problem.
* srf04
  - Add power management with DT bindings for the GPIO.
* stm32-timer-trigger
  - Power management.
* (counter) stm32-timer-cnt
  - Power management.
* vcnl4000
  - Enable runtime PM for devices that don't use on demand measurement.

Cleanups and minor fixes
* core
  - Avoid double read when using debugfs.  Whilst we provide no guarantees
    on lack of side effects using the debugfs interfaces, this one is
    generate unexpected results so let us tidy it up.
* dac/Kconfig
  - Alphabetic order.
* ad5755
  - Grammar and minor other fixes.
* ad7124
  - Fail probe if get_voltage fails as no meaningful readings can be had
    without knowing the external reference.
  - Switch to selection between different channel attributes rather than
    building the arrays at runtime.
  - Remove the spi_device_id table as the driver cannot be probled without
    more information that can be provided without dt.
  - Update sysfs docs to provide more inormation and bring remaining docs for
    this part out of staging.
* ad9292
  - Use new SPI transfer delay structure.
* adis library
  - Add unlocked version of adis_initial_startup and refactor the function.
  - Add a product ID santiy check.
  - Add support for different self test registers.
  - Use new SPI delay structure.
  - Add new docs and tidy up existing.
* adis16136
  - Initialize adis_data statically.
* adis16400
  - Initialize adis_data statically.
* adis16460
  - Use core __adis_initial_Startup now it supports everything needed.
* adis16480
  - Initialize adis_data statically.
  - Use core __adis_initial_startup now it supports everything needed.
* al3320a
  - Add missing DT binding docs.
  - Tidy up code formatting.
  - Simplify error paths using devm_add_action_or_reset.
  - Ensure autoloading works by adding the of_match_table.
* atlas-sensor
  - Drop false requirement for interrupt line, the value can be polled using
    a sysfs or hrtimer type trigger.
* exynos-adc
  - Silence warning message on deferring probe.
* gp2ap002
  - Greatly simplify the Lux LUT.
  - Reorder actions around buffer setup and tear down as part of a sub-system
    wide standardization of these.
* inv_mpu6050
  - Various lttle tidyups.
  - Simpliy I2C aux MUX handling by enabling it only at startup. It never
    needs to be disabled.
  - Simplify polling rate when magnetometer enabled by putting only under
    control of userspace.
  - Always execute full reset on devices supporting spi. It does no harm
    when using i2c and makes for simpler code.
  - Reduce over the top sleep times for vddio regulator power up.
  - Greatly simplify power and engine management.
  - Fix some delays in polled reads (only visible due to other changes)
  - Stop preventing sampling rate changes whilst running as there is no
    adverse consequence of doing so.
  - Prevent attempting to read the temperature if neither accel nor
    gyro is enabled.
* lmp9100
  - Reorder actions around buffer setup and tear down as part of a sub-system
    wide standardization of these.
* max1118
  - Use new SPI transfer delay structure.
* mcp320x
  - Use new SPI transfer delay structure.
* si1133
  - Read full 24 bit signed integer instead o dropping last 8 bits of value.
    Not a critical fix as just adds precision.
* st_sensors
  - Use st_sensors_dev_name_probe instead of open coded version in st_accel
  - Handle potential memory allocation failure.
* st_lsm6dsx
  - Fix some wrong structure element naming in documentation.
  - Add missing return value check.
* stm32_timer_cnt
  - Drop some unused left over IIO headers from this count subsystem driver.
  - Ensure the clock is enabled in master mode.  Theoretical issue rather
    than one known to happen in the wild.
* tlc4541
  - Use new SPI delay structure.

* tag 'iio-5.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (98 commits)
  iio: dac: Kconfig: sort symbols alphabetically
  iio: light: gp2ap020a00f: fix iio_triggered_buffer_{predisable,postenable} positions
  iio: potentiostat: lmp9100: fix iio_triggered_buffer_{predisable,postenable} positions
  iio: trigger: stm32-timer: add power management support
  iio: trigger: stm32-timer: rename enabled flag
  iio: add a TODO
  counter: 104-quad-8: Support Differential Encoder Cable Status
  counter: 104-quad-8: Support Filter Clock Prescaler
  iio: pressure: icp10100: add driver for InvenSense ICP-101xx
  iio: industrialio-core: Fix debugfs read
  iio: imu: adis: add a note better explaining state_lock
  iio: imu: adis: update 'adis_data' struct doc-string
  iio: imu: adis: add doc-string for 'adis' struct
  iio: imu: adis_buffer: Use new structure for SPI transfer delays
  iio: adc: ti-tlc4541: Use new structure for SPI transfer delays
  iio: adc: mcp320x: Use new structure for SPI transfer delays
  iio: adc: max1118: Use new structure for SPI transfer delays
  iio: adc: ad9292: Use new structure for SPI transfer delays
  iio: adc: exynos: Silence warning about regulators during deferred probe
  staging: iio: update TODO
  ...
2020-03-18 11:33:12 +01:00
Linus Walleij
3f9d513331 watchdog: wm831x_wdt: Remove GPIO handling
An attempt to convert the driver to using GPIO descriptors
(see Link tag) was discouraged in favor of deleting the
handling of the update GPIO altogehter since there are
no in-tree users.

This patch deletes the GPIO handling instead.

Cc: Richard Fitzgerald <rf@opensource.cirrus.com>
Cc: Charles Keepax <ckeepax@opensource.cirrus.com>
Cc: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/linux-watchdog/20200210102209.289379-1-linus.walleij@linaro.org/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200229115046.57781-1-linus.walleij@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2020-03-18 11:15:24 +01:00
Amit Daniel Kachhap
2832158233 arm64: initialize ptrauth keys for kernel booting task
This patch uses the existing boot_init_stack_canary arch function
to initialize the ptrauth keys for the booting task in the primary
core. The requirement here is that it should be always inline and
the caller must never return.

As pointer authentication too detects a subset of stack corruption
so it makes sense to place this code here.

Both pointer authentication and stack canary codes are protected
by their respective config option.

Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Reviewed-by: Vincenzo Frascino <Vincenzo.Frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-03-18 09:50:20 +00:00
David S. Miller
a58741ef1e Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patchset contains Netfilter updates for net-next:

1) Use nf_flow_offload_tuple() to fetch flow stats, from Paul Blakey.

2) Add new xt_IDLETIMER hard mode, from Manoj Basapathi.
   Follow up patch to clean up this new mode, from Dan Carpenter.

3) Add support for geneve tunnel options, from Xin Long.

4) Make sets built-in and remove modular infrastructure for sets,
   from Florian Westphal.

5) Remove unused TEMPLATE_NULLS_VAL, from Li RongQing.

6) Statify nft_pipapo_get, from Chen Wandun.

7) Use C99 flexible-array member, from Gustavo A. R. Silva.

8) More descriptive variable names for bitwise, from Jeremy Sowden.

9) Four patches to add tunnel device hardware offload to the flowtable
   infrastructure, from wenxu.

10) pipapo set supports for 8-bit grouping, from Stefano Brivio.

11) pipapo can switch between nibble and byte grouping, also from
    Stefano.

12) Add AVX2 vectorized version of pipapo, from Stefano Brivio.

13) Update pipapo to be use it for single ranges, from Stefano.

14) Add stateful expression support to elements via control plane,
    eg. counter per element.

15) Re-visit sysctls in unprivileged namespaces, from Florian Westphal.

15) Add new egress hook, from Lukas Wunner.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 23:51:31 -07:00
Russell King
b8679ef8be net: phylink: pcs: add 802.3 clause 45 helpers
Implement helpers for PCS accessed via the MII bus using 802.3 clause
45 cycles for 10GBASE-R. Only link up/down is supported, 10G full
duplex is assumed.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 22:51:16 -07:00
Russell King
74db1c18d8 net: phylink: pcs: add 802.3 clause 22 helpers
Implement helpers for PCS accessed via the MII bus using 802.3 clause
22 cycles, conforming to 802.3 clause 37 and Cisco SGMII specifications
for the advertisement word.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 22:51:16 -07:00
Russell King
6cc7cf8125 net: mdiobus: add APIs for modifying a MDIO device register
Add APIs for modifying a MDIO device register, similar to the existing
phy_modify() group of functions, but at mdiobus level instead.  Adapt
__phy_modify_changed() to use the new mdiobus level helper.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 22:51:16 -07:00
Heiner Kallweit
9010f9deb0 net: phy: improve phy_driver callback handle_interrupt
did_interrupt() clears the interrupt, therefore handle_interrupt() can
not check which event triggered the interrupt. To overcome this
constraint and allow more flexibility for customer interrupt handlers,
let's decouple handle_interrupt() from parts of the phylib interrupt
handling. Custom interrupt handlers now have to implement the
did_interrupt() functionality in handle_interrupt() if needed.

Fortunately we have just one custom interrupt handler so far (in the
mscc PHY driver), convert it to the changed API.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 20:58:22 -07:00