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Core changes:
* Rework core functions to avoid duplicating generic checks in
NAND/OneNAND sub-layers
* Update the MAINTAINERS entry to reflect the fact that MTD
maintainers now use a single git tree
Driver changes:
* CFI: use macros instead of inline functions to limit stack
usage and make KASAN happy
NAND changes:
Core changes:
* Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
* Introduce the ->exec_op() infrastructure
* Rework NAND buffers handling
* Fix ECC requirements for K9F4G08U0D
* Fix nand_do_read_oob() to return the number of bitflips
* Mark K9F1G08U0E as not supporting subpage writes
Driver changes:
* MTK: Rework the driver to support new IP versions
* OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and fix
DT support
* Marvell: Add a new driver to replace the pxa3xx one
SPI NOR changes:
Core changes:
* Add support to new ISSI and Cypress/Spansion memory parts.
* Fix support of Micron memories by checking error bits in the FSR.
* Fix update of block-protection bits by reading back the SR.
* Restore the internal state of the SPI flash memory when removing the
device.
Driver changes:
* Maintenance for Freescale, Intel and Metiatek drivers.
* Add support of the direct access mode for the Cadence QSPI controller.
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Merge tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon:
"MTD core changes:
- Rework core functions to avoid duplicating generic checks in
NAND/OneNAND sub-layers
- Update the MAINTAINERS entry to reflect the fact that MTD
maintainers now use a single git tree
MTD driver changes:
- CFI: use macros instead of inline functions to limit stack usage
and make KASAN happy
NAND core changes:
- Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
- Introduce the ->exec_op() infrastructure
- Rework NAND buffers handling
- Fix ECC requirements for K9F4G08U0D
- Fix nand_do_read_oob() to return the number of bitflips
- Mark K9F1G08U0E as not supporting subpage writes
NAND driver changes:
- MTK: Rework the driver to support new IP versions
- OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and
fix DT support
- Marvell: Add a new driver to replace the pxa3xx one
SPI NOR core changes:
- Add support to new ISSI and Cypress/Spansion memory parts.
- Fix support of Micron memories by checking error bits in the FSR.
- Fix update of block-protection bits by reading back the SR.
- Restore the internal state of the SPI flash memory when removing
the device.
SPI NOR driver changes:
- Maintenance for Freescale, Intel and Metiatek drivers.
- Add support of the direct access mode for the Cadence QSPI
controller"
* tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd: (93 commits)
mtd: nand: sunxi: Fix ECC strength choice
mtd: nand: gpmi: Fix subpage reads
mtd: nand: Fix build issues due to an anonymous union
mtd: nand: marvell: Fix missing memory allocation modifier
mtd: nand: marvell: remove redundant variable 'oob_len'
mtd: nand: marvell: fix spelling mistake: "suceed"-> "succeed"
mtd: onenand: omap2: Remove redundant dev_err call in omap2_onenand_probe()
mtd: Remove duplicate checks on mtd_oob_ops parameter
mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
mtd: mtdpart: Make ECC stat handling consistent
mtd: onenand: omap2: print resource using %pR format string
mtd: mtk-nor: modify functions' name more generally
mtd: onenand: samsung: remove incorrect __iomem annotation
MAINTAINERS: Add entry for Marvell NAND controller driver
ARM: OMAP2+: Remove gpmc-onenand
mtd: onenand: omap2: Configure driver from DT
mtd: onenand: omap2: Decouple DMA enabling from INT pin availability
mtd: onenand: omap2: Do not make delay for GPIO OMAP3 specific
mtd: onenand: omap2: Convert to use dmaengine for memcpy
mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA implementation
...
- Define a PM driver flag allowing drivers to request that their
devices be left in suspend after system-wide transitions to the
working state if possible and add support for it to the PCI bus
type and the ACPI PM domain (Rafael Wysocki).
- Make the PM core carry out optimizations for devices with driver
PM flags set in some cases and make a few drivers set those flags
(Rafael Wysocki).
- Fix and clean up wrapper routines allowing runtime PM device
callbacks to be re-used for system-wide PM, change the generic
power domains (genpd) framework to stop using those routines
incorrectly and fix up a driver depending on that behavior of
genpd (Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).
- Fix and clean up the PM core's device wakeup framework and
re-factor system-wide PM core code related to device wakeup
(Rafael Wysocki, Ulf Hansson, Brian Norris).
- Make more x86-based systems use the Low Power Sleep S0 _DSM
interface by default (to fix power button wakeup from
suspend-to-idle on Surface Pro3) and add a kernel command line
switch to tell it to ignore the system sleep blacklist in the
ACPI core (Rafael Wysocki).
- Fix a race condition related to cpufreq governor module removal
and clean up the governor management code in the cpufreq core
(Rafael Wysocki).
- Drop the unused generic code related to the handling of the static
power energy usage model in the CPU cooling thermal driver along
with the corresponding documentation (Viresh Kumar).
- Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh Cheng).
- Add a new operating point to the imx6ul and imx6q cpufreq drivers
and switch the latter to using clk_bulk_get() (Anson Huang, Dong
Aisheng).
- Add support for multiple regulators to the TI cpufreq driver along
with a new DT binding related to that and clean up that driver
somewhat (Dave Gerlach).
- Fix a powernv cpufreq driver regression leading to incorrect CPU
frequency reporting, fix that driver to deal with non-continguous
P-states correctly and clean it up (Gautham Shenoy, Shilpasri Bhat).
- Add support for frequency scaling on Armada 37xx SoCs through the
generic DT cpufreq driver (Gregory CLEMENT).
- Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).
- Fix a transition delay setting regression in the longhaul cpufreq
driver (Viresh Kumar).
- Add Skylake X (server) support to the intel_pstate cpufreq driver
and clean up that driver somewhat (Srinivas Pandruvada).
- Clean up the cpufreq statistics collection code (Viresh Kumar).
- Drop cluster terminology and dependency on physical_package_id
from the PSCI driver and drop dependency on arm_big_little from
the SCPI cpufreq driver (Sudeep Holla).
- Add support for system-wide suspend and resume to the RAPL power
capping driver and drop a redundant semicolon from it (Zhen Han,
Luis de Bethencourt).
- Make SPI domain validation (in the SCSI SPI transport driver) and
system-wide suspend mutually exclusive as they rely on the same
underlying mechanism and cannot be carried out at the same time
(Bart Van Assche).
- Fix the computation of the amount of memory to preallocate in the
hibernation core and clean up one function in there (Rainer Fiebig,
Kyungsik Lee).
- Prepare the Operating Performance Points (OPP) framework for being
used with power domains and clean up one function in it (Viresh
Kumar, Wei Yongjun).
- Clean up the generic sysfs interface for device PM (Andy Shevchenko).
- Fix several minor issues in power management frameworks and clean
them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
Sergey Senozhatsky, gaurav jindal).
- Make it easier to disable PM via Kconfig (Mark Brown).
- Clean up the cpupower and intel_pstate_tracer utilities (Doug
Smythies, Laura Abbott).
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Merge tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This includes some infrastructure changes in the PM core, mostly
related to integration between runtime PM and system-wide suspend and
hibernation, plus some driver changes depending on them and fixes for
issues in that area which have become quite apparent recently.
Also included are changes making more x86-based systems use the Low
Power Sleep S0 _DSM interface by default, which turned out to be
necessary to handle power button wakeups from suspend-to-idle on
Surface Pro3.
On the cpufreq front we have fixes and cleanups in the core, some new
hardware support, driver updates and the removal of some unused code
from the CPU cooling thermal driver.
Apart from this, the Operating Performance Points (OPP) framework is
prepared to be used with power domains in the future and there is a
usual bunch of assorted fixes and cleanups.
Specifics:
- Define a PM driver flag allowing drivers to request that their
devices be left in suspend after system-wide transitions to the
working state if possible and add support for it to the PCI bus
type and the ACPI PM domain (Rafael Wysocki).
- Make the PM core carry out optimizations for devices with driver PM
flags set in some cases and make a few drivers set those flags
(Rafael Wysocki).
- Fix and clean up wrapper routines allowing runtime PM device
callbacks to be re-used for system-wide PM, change the generic
power domains (genpd) framework to stop using those routines
incorrectly and fix up a driver depending on that behavior of genpd
(Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).
- Fix and clean up the PM core's device wakeup framework and
re-factor system-wide PM core code related to device wakeup
(Rafael Wysocki, Ulf Hansson, Brian Norris).
- Make more x86-based systems use the Low Power Sleep S0 _DSM
interface by default (to fix power button wakeup from
suspend-to-idle on Surface Pro3) and add a kernel command line
switch to tell it to ignore the system sleep blacklist in the ACPI
core (Rafael Wysocki).
- Fix a race condition related to cpufreq governor module removal and
clean up the governor management code in the cpufreq core (Rafael
Wysocki).
- Drop the unused generic code related to the handling of the static
power energy usage model in the CPU cooling thermal driver along
with the corresponding documentation (Viresh Kumar).
- Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh
Cheng).
- Add a new operating point to the imx6ul and imx6q cpufreq drivers
and switch the latter to using clk_bulk_get() (Anson Huang, Dong
Aisheng).
- Add support for multiple regulators to the TI cpufreq driver along
with a new DT binding related to that and clean up that driver
somewhat (Dave Gerlach).
- Fix a powernv cpufreq driver regression leading to incorrect CPU
frequency reporting, fix that driver to deal with non-continguous
P-states correctly and clean it up (Gautham Shenoy, Shilpasri
Bhat).
- Add support for frequency scaling on Armada 37xx SoCs through the
generic DT cpufreq driver (Gregory CLEMENT).
- Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).
- Fix a transition delay setting regression in the longhaul cpufreq
driver (Viresh Kumar).
- Add Skylake X (server) support to the intel_pstate cpufreq driver
and clean up that driver somewhat (Srinivas Pandruvada).
- Clean up the cpufreq statistics collection code (Viresh Kumar).
- Drop cluster terminology and dependency on physical_package_id from
the PSCI driver and drop dependency on arm_big_little from the SCPI
cpufreq driver (Sudeep Holla).
- Add support for system-wide suspend and resume to the RAPL power
capping driver and drop a redundant semicolon from it (Zhen Han,
Luis de Bethencourt).
- Make SPI domain validation (in the SCSI SPI transport driver) and
system-wide suspend mutually exclusive as they rely on the same
underlying mechanism and cannot be carried out at the same time
(Bart Van Assche).
- Fix the computation of the amount of memory to preallocate in the
hibernation core and clean up one function in there (Rainer Fiebig,
Kyungsik Lee).
- Prepare the Operating Performance Points (OPP) framework for being
used with power domains and clean up one function in it (Viresh
Kumar, Wei Yongjun).
- Clean up the generic sysfs interface for device PM (Andy
Shevchenko).
- Fix several minor issues in power management frameworks and clean
them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
Sergey Senozhatsky, gaurav jindal).
- Make it easier to disable PM via Kconfig (Mark Brown).
- Clean up the cpupower and intel_pstate_tracer utilities (Doug
Smythies, Laura Abbott)"
* tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
PCI / PM: Remove spurious semicolon
cpufreq: scpi: remove arm_big_little dependency
drivers: psci: remove cluster terminology and dependency on physical_package_id
powercap: intel_rapl: Fix trailing semicolon
dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit
PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
PM / hibernate: Drop unused parameter of enough_swap
PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
PM / runtime: Rework pm_runtime_force_suspend/resume()
PM / genpd: Stop/start devices without pm_runtime_force_suspend/resume()
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
cpufreq: intel_pstate: Add Skylake servers support
cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
ACPI / PM: Use Low Power S0 Idle on more systems
PM / wakeup: Print warn if device gets enabled as wakeup source during sleep
PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
PM / core: Propagate wakeup_path status flag in __device_suspend_late()
PM / core: Re-structure code for clearing the direct_complete flag
powercap: add suspend and resume mechanism for SOC power limit
...
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Merge tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull init_task initializer cleanups from David Howells:
"It doesn't seem useful to have the init_task in a header file rather
than in a normal source file. We could consolidate init_task handling
instead and expand out various macros.
Here's a series of patches that consolidate init_task handling:
(1) Make THREAD_SIZE available to vmlinux.lds for cris, hexagon and
openrisc.
(2) Alter the INIT_TASK_DATA linker script macro to set
init_thread_union and init_stack rather than defining these in C.
Insert init_task and init_thread_into into the init_stack area in
the linker script as appropriate to the configuration, with
different section markers so that they end up correctly ordered.
We can then get merge ia64's init_task.c into the main one.
We then have a bunch of single-use INIT_*() macros that seem only
to be macros because they used to be used per-arch. We can then
expand these in place of the user and get rid of a few lines and
a lot of backslashes.
(3) Expand INIT_TASK() in place.
(4) Expand in place various small INIT_*() macros that are defined
conditionally. Expand them and surround them by #if[n]def/#endif
in the .c file as it takes fewer lines.
(5) Expand INIT_SIGNALS() and INIT_SIGHAND() in place.
(6) Expand INIT_STRUCT_PID in place.
These macros can then be discarded"
* tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
Expand INIT_STRUCT_PID and remove
Expand the INIT_SIGNALS and INIT_SIGHAND macros and remove
Expand various INIT_* macros and remove
Expand INIT_TASK() in init/init_task.c and remove
Construct init thread stack in the linker script rather than by union
openrisc: Make THREAD_SIZE available to vmlinux.lds
hexagon: Make THREAD_SIZE available to vmlinux.lds
cris: Make THREAD_SIZE available to vmlinux.lds
Alexei Starovoitov says:
====================
pull-request: bpf-next 2018-01-26
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) A number of extensions to tcp-bpf, from Lawrence.
- direct R or R/W access to many tcp_sock fields via bpf_sock_ops
- passing up to 3 arguments to bpf_sock_ops functions
- tcp_sock field bpf_sock_ops_cb_flags for controlling callbacks
- optionally calling bpf_sock_ops program when RTO fires
- optionally calling bpf_sock_ops program when packet is retransmitted
- optionally calling bpf_sock_ops program when TCP state changes
- access to tclass and sk_txhash
- new selftest
2) div/mod exception handling, from Daniel.
One of the ugly leftovers from the early eBPF days is that div/mod
operations based on registers have a hard-coded src_reg == 0 test
in the interpreter as well as in JIT code generators that would
return from the BPF program with exit code 0. This was basically
adopted from cBPF interpreter for historical reasons.
There are multiple reasons why this is very suboptimal and prone
to bugs. To name one: the return code mapping for such abnormal
program exit of 0 does not always match with a suitable program
type's exit code mapping. For example, '0' in tc means action 'ok'
where the packet gets passed further up the stack, which is just
undesirable for such cases (e.g. when implementing policy) and
also does not match with other program types.
After considering _four_ different ways to address the problem,
we adapt the same behavior as on some major archs like ARMv8:
X div 0 results in 0, and X mod 0 results in X. aarch64 and
aarch32 ISA do not generate any traps or otherwise aborts
of program execution for unsigned divides.
Given the options, it seems the most suitable from
all of them, also since major archs have similar schemes in
place. Given this is all in the realm of undefined behavior,
we still have the option to adapt if deemed necessary.
3) sockmap sample refactoring, from John.
4) lpm map get_next_key fixes, from Yonghong.
5) test cleanups, from Alexei and Prashant.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from arm32 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shubham Bansal <illusionist.neo@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
It doesn't actually do anything. Merge its help text into
EXTRA_FIRMWARE.
Fixes: 5620a0d1aacd ("firmware: delete in-kernel firmware")
Fixes: 0946b2fb38fd ("firmware: cleanup FIRMWARE_IN_KERNEL message")
Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_IRQ_DOMAIN_DEBUG is similar to CONFIG_GENERIC_IRQ_DEBUGFS,
just with less information.
Spring cleanup time.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Yang Shunyong <shunyong.yang@hxt-semitech.com>
Link: https://lkml.kernel.org/r/20180117142647.23622-1-marc.zyngier@arm.com
This adds support for the Marvell switch and names the network
ports according to the labels, that can be found next to the
connectors. The switch is connected to the host system using a
PCI based network card.
The PCI bus configuration has been written using the following
information:
root@b450v3# lspci -tv
-[0000:00]---00.0-[01]----00.0 Intel Corporation I210 Gigabit Network Connection
root@b450v3# lspci -nn
00:00.0 PCI bridge [0604]: Synopsys, Inc. Device [16c3:abcd] (rev 01)
01:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds support for the Marvell switch and names the network
ports according to the labels, that can be found next to the
connectors. The switch is connected to the host system using a
PCI based network card.
The PCI bus configuration has been written using the following
information:
root@b650v3# lspci -tv
-[0000:00]---00.0-[01]----00.0 Intel Corporation I210 Gigabit Network Connection
root@b650v3# lspci -nn
00:00.0 PCI bridge [0604]: Synopsys, Inc. Device [16c3:abcd] (rev 01)
01:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds support for the Marvell switch and names the network
ports according to the labels, that can be found next to the
connectors ("ID", "IX", "ePort 1", "ePort 2"). The switch is
connected to the host system using a PCI based network card.
The PCI bus configuration has been written using the following
information:
root@b850v3# lspci -tv
-[0000:00]---00.0-[01]----00.0-[02-05]--+-01.0-[03]----00.0 Intel Corporation I210 Gigabit Network Connection
+-02.0-[04]----00.0 Intel Corporation I210 Gigabit Network Connection
\-03.0-[05]--
root@b850v3# lspci -nn
00:00.0 PCI bridge [0604]: Synopsys, Inc. Device [16c3:abcd] (rev 01)
01:00.0 PCI bridge [0604]: PLX Technology, Inc. PEX 8605 PCI Express 4-port Gen2 Switch [10b5:8605] (rev ab)
02:01.0 PCI bridge [0604]: PLX Technology, Inc. PEX 8605 PCI Express 4-port Gen2 Switch [10b5:8605] (rev ab)
02:02.0 PCI bridge [0604]: PLX Technology, Inc. PEX 8605 PCI Express 4-port Gen2 Switch [10b5:8605] (rev ab)
02:03.0 PCI bridge [0604]: PLX Technology, Inc. PEX 8605 PCI Express 4-port Gen2 Switch [10b5:8605] (rev ab)
03:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
04:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
B850v3, B650v3 and B450v3 all have a GPIO bit banged MDIO bus to
communicate with a Marvell switch. On all devices the switch is
connected to a PCI based network card, which needs to be referenced
by DT, so this also adds the common PCI root node.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.
Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Add the reset signals for the i2c controllers on Cyclone5-based
SoCFPGA boards to the dtsi.
Signed-off-by: Tim Sander <tim.sander@hbm.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
For now, we need to rely on dts alias for n900 lcd and tvout order
to prevent occasional blank lcd. And we need to reduce the shut down
temperature for dra7 for non-cpu thermal cases.
And looks like we're missing the n9 volume key mappings and there is
active work going happening for n9 at least for postmarketos. So let's
make sure the keys can be actually used as they are the only buttons
on n9 in addition to the power key.
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Merge tag 'omap-for-v4.16/dt-pt3-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
Pull "dts fixes for omaps for v4.16 merge window" from Tony Lindgren:
Few omap dts fixes and n9 volume keys update for v4.16 merge window
For now, we need to rely on dts alias for n900 lcd and tvout order
to prevent occasional blank lcd. And we need to reduce the shut down
temperature for dra7 for non-cpu thermal cases.
And looks like we're missing the n9 volume key mappings and there is
active work going happening for n9 at least for postmarketos. So let's
make sure the keys can be actually used as they are the only buttons
on n9 in addition to the power key.
* tag 'omap-for-v4.16/dt-pt3-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Nokia N9: add support for up/down keys in the dts
ARM: dts: dra7: Reduce shut down temperature of non-cpu thermal zones
ARM: dts: n900: Add aliases for lcd and tvout displays
There are so many places that build struct siginfo by hand that at
least one of them is bound to get it wrong. A handful of cases in the
kernel arguably did just that when using the errno field of siginfo to
pass no errno values to userspace. The usage is limited to a single
si_code so at least does not mess up anything else.
Encapsulate this questionable pattern in a helper function so
that the userspace ABI is preserved.
Update all of the places that use this pattern to use the new helper
function.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Older compilers choose not to inline _setup_clkctrl_provider(),
leading to a harmless warning:
WARNING: vmlinux.o(.text+0x27b34): Section mismatch in reference from the function _setup_clkctrl_provider() to the function .init.text:memblock_virt_alloc_try_nid()
The function _setup_clkctrl_provider() references
the function __init memblock_virt_alloc_try_nid().
This is often because _setup_clkctrl_provider lacks a __init
annotation or the annotation of memblock_virt_alloc_try_nid is wrong.
This annotates it as __init as well, which lets the linker
see that it is actually correct.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Now that we have the dts clocks for the clkctrl clock and the
interconnect binding, we need to update the existing ti-sysc
users according to the binding to make it usable for drivers.
Apologies for not being able to send this earlier but it took
me few revisions to get the smartreflex changes right and
tested with yet to be posted patches to make smartreflex probe
with dts and I wanted to have it sit in next for a while to make
sure we're not introducing regressions for legacy platform data
based booting.
Note that this is based on a merge with commit 20a2742e5784
("dt-bindings: ti-sysc: Update binding for timers and capabilities")
to avoid a merge conflict with the binding changes.
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Merge tag 'omap-for-v4.16/dt-clk-dts-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
Pull "Few omap interconnect dts fixes for v4.16 merge window" from
Tony Lindgren:
Now that we have the dts clocks for the clkctrl clock and the
interconnect binding, we need to update the existing ti-sysc
users according to the binding to make it usable for drivers.
Apologies for not being able to send this earlier but it took
me few revisions to get the smartreflex changes right and
tested with yet to be posted patches to make smartreflex probe
with dts and I wanted to have it sit in next for a while to make
sure we're not introducing regressions for legacy platform data
based booting.
Note that this is based on a merge with commit 20a2742e5784
("dt-bindings: ti-sysc: Update binding for timers and capabilities")
to avoid a merge conflict with the binding changes.
* tag 'omap-for-v4.16/dt-clk-dts-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Update ti-sysc data for existing users
ARM: dts: Fix smartreflex compatible for omap3 shared mpu-iva instance
dt-bindings: ti-sysc: Update binding for timers and capabilities
Without this tag, we get a build warning:
WARNING: modpost: missing MODULE_LICENSE() in arch/arm/mach-pxa/tosa-bt.o
For completeness, I'm also adding author and description fields.
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The __memzero assembly code is almost identical to memset's except for
two orr instructions. The runtime performance of __memset(p, n) and
memset(p, 0, n) is accordingly almost identical.
However, the memset() macro used to guard against a zero length and to
call __memzero at compile time when the fill value is a constant zero
interferes with compiler optimizations.
Arnd found tha the test against a zero length brings up some new
warnings with gcc v8:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82103
And successively rremoving the test against a zero length and the call
to __memzero optimization produces the following kernel sizes for
defconfig with gcc 6:
text data bss dec hex filename
12248142 6278960 413588 18940690 1210312 vmlinux.orig
12244474 6278960 413588 18937022 120f4be vmlinux.no_zero_test
12239160 6278960 413588 18931708 120dffc vmlinux.no_memzero
So it is probably not worth keeping __memzero around given that the
compiler can do a better job at inlining trivial memset(p,0,n) on its
own. And the memset code already handles a zero length just fine.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Discarding the memblock arrays usually works, but causes problems
with kexec, as pointed out by this kbuild warning:
WARNING: vmlinux.o(.text+0x7c60): Section mismatch in reference from the function machine_kexec_prepare() to the function .meminit.text:memblock_is_region_memory()
This lets us keep the memblock structures around whenever kexec
is enabled, but otherwise still drops them.
Fixes: cf1b09908a23 ("ARM: 8693/1: discard memblock arrays when possible")
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Without this tag, we get a build warning:
WARNING: modpost: missing MODULE_LICENSE() in arch/arm/common/bL_switcher_dummy_if.o
For completeness, I'm also adding author and description fields.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
refcount_t overflow detection is implemented as two way.
1. REFCOUNT_FULL
- It means the full refcount_t implementation
which has validation but is slightly slower.
- (fd25d19f6b8d ("locking/refcount:
Create unchecked atomic_t implementation"))
2. ARCH_HAS_REFCOUNT
- refcount_t overflow detection can be optimized
via an arch-dependent way.
- It is based on atomic_t infrastructure
with some instruction added for detection.
- It is faster than REFCOUNT_FULL,
as fast as unprotected atomic_t infrastructure.
- (7a46ec0e2f48 ("locking/refcounts, x86/asm:
Implement fast refcount overflow protection"))
ARCH_HAS_REFCOUNT has implemented for x86,
not implemented for others.
In the case of arm64,
Will Deacon said he didn't want the specialized
"fast but technically incomplete" refcounting as seen with x86's.
But rather to set REFCOUNT_FULL by default
because no one could point to real-world performance impacts with
REFCOUNT_FULL vs unprotected atomic_t infrastructure.
This is the reason arm64 ended up enabling REFCOUNT_FULL.
(4adcec1164de ("arm64: Always use REFCOUNT_FULL"))
As with the decision of arm64,
arm can set REFCOUNT_FULL by default.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
The new conditionally compiled code leaves some labels and one
variable unreferenced when CONFIG_HOTPLUG_CPU and CONFIG_PM_SLEEP
are disabled:
arch/arm/mm/cache-b15-rac.c: In function 'b15_rac_init':
arch/arm/mm/cache-b15-rac.c:353:1: error: label 'out_unmap' defined but not used [-Werror=unused-label]
out_unmap:
^~~~~~~~~
arch/arm/mm/cache-b15-rac.c:351:1: error: label 'out_cpu_dead' defined but not used [-Werror=unused-label]
out_cpu_dead:
^~~~~~~~~~~~
At top level:
arch/arm/mm/cache-b15-rac.c:53:12: error: 'rac_config0_reg' defined but not used [-Werror=unused-variable]
This replaces the existing #ifdef conditionals with IS_ENABLED()
checks that let the compiler figure out for itself which code to
drop.
Fixes: 55de88778f4b ("ARM: 8726/1: B15: Add CPU hotplug awareness")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
adjust_lowmem_bounds() called twice which can lead to stalled data
(i.e. subreg) value in mem[] array after the first call.
Zero out mem[] array before we allocate MPU regions for memory.
Fixes: 5c9d9a1b3a54 ("ARM: 8712/1: NOMMU: Use more MPU regions to cover memory")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
With switch to dynamic exception base address setting, VBAR/Hivecs
set only for boot CPU, but secondaries stay unaware of that. That
might lead to weird effects when trying up to bring up secondaries.
Fixes: ad475117d201 ("ARM: 8649/2: nommu: remove Hivecs configuration is asm")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
While running MPS2 platform (NOMMU) with DTB placed below PHYS_OFFSET
following warning poped up:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at arch/arm/mm/physaddr.c:42 __virt_to_phys+0x2f/0x40
virt_to_phys used for non-linear address: 00004000 (0x4000)
CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc1-5a31bf2-clean+ #2767
Hardware name: MPS2 (Device Tree Support)
[<2100bf39>] (unwind_backtrace) from [<2100b3ff>] (show_stack+0xb/0xc)
[<2100b3ff>] (show_stack) from [<2100e697>] (__warn+0x87/0xac)
[<2100e697>] (__warn) from [<2100e6db>] (warn_slowpath_fmt+0x1f/0x28)
[<2100e6db>] (warn_slowpath_fmt) from [<2100c603>] (__virt_to_phys+0x2f/0x40)
[<2100c603>] (__virt_to_phys) from [<2116a499>] (early_init_fdt_reserve_self+0xd/0x24)
[<2116a499>] (early_init_fdt_reserve_self) from [<2116222d>] (arm_memblock_init+0xb5/0xf8)
[<2116222d>] (arm_memblock_init) from [<21161cad>] (setup_arch+0x38b/0x50e)
[<21161cad>] (setup_arch) from [<21160455>] (start_kernel+0x31/0x280)
[<21160455>] (start_kernel) from [<00000000>] ( (null))
random: get_random_bytes called from init_oops_id+0x17/0x2c with crng_init=0
---[ end trace 0000000000000000 ]---
Platforms without MMU support run with 1:1 (i.e. linear) memory
mapping, so disable CONFIG_DEBUG_VIRTUAL.
Fixes: e377cd8221eb ("ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Page mappings with full RWX permissions are a security risk.
x86, arm64 has an option to walk the page tables
and dump any bad pages.
(1404d6f13e47
("arm64: dump: Add checking for writable and exectuable pages"))
Add a similar implementation for arm.
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This patch makes the page table dumping seq_file optional.
It makes the page table dumping code usable for other cases.
This patch refers below commit of arm64.
(ae5d1cf358a5
("arm64: dump: Make the page table dumping seq_file optional"))
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This patch refactors the arm page table dumping code,
so multiple tables may be registered with the framework.
This patch refers below commits of arm64.
(4674fdb9f149 ("arm64: mm: dump: make page table dumping reusable"))
(4ddb9bf83349 ("arm64: dump: Make ptdump debugfs a separate option"))
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Alexei Starovoitov says:
====================
pull-request: bpf-next 2018-01-19
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) bpf array map HW offload, from Jakub.
2) support for bpf_get_next_key() for LPM map, from Yonghong.
3) test_verifier now runs loaded programs, from Alexei.
4) xdp cpumap monitoring, from Jesper.
5) variety of tests, cleanups and small x64 JIT optimization, from Daniel.
6) user space can now retrieve HW JITed program, from Jiong.
Note there is a minor conflict between Russell's arm32 JIT fixes
and removal of bpf_jit_enable variable by Daniel which should
be resolved by keeping Russell's comment and removing that variable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The BPF verifier conflict was some minor contextual issue.
The TUN conflict was less trivial. Cong Wang fixed a memory leak of
tfile->tx_array in 'net'. This is an skb_array. But meanwhile in
net-next tun changed tfile->tx_arry into tfile->tx_ring which is a
ptr_ring.
Signed-off-by: David S. Miller <davem@davemloft.net>
Having a pure_initcall() callback just to permanently enable BPF
JITs under CONFIG_BPF_JIT_ALWAYS_ON is unnecessary and could leave
a small race window in future where JIT is still disabled on boot.
Since we know about the setting at compilation time anyway, just
initialize it properly there. Also consolidate all the individual
bpf_jit_enable variables into a single one and move them under one
location. Moreover, don't allow for setting unspecified garbage
values on them.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
We have various small DT fixes, and one important regression fix:
The recent device tree bugfixes that were intended to address issues that
'dtc' started warning about in 4.15 fixed various USB PHY device nodes,
but it turns out that we had code that depended on those nodes being
incorrect and the probe failing with a particular error code. With the
workaround we can also deal with correct device nodes.
The DT fixes include:
- Allwinner A10 and A20 had the display pipeline set up incorrectly
(introduced in v4.15)
- The Altera PMU lacked an interrupt-parent (never worked)
- Pin muxing on the Openblocks A7 (never worked)
- Clocks might get set up wrong on Armada 7K/8K (4.15 regression)
We now have additional device tree patches to address all the remaining
warnings introduced in 4.15, but decided to queue them for 4.16 instead,
to avoid risking another regression like the USB PHY thing mentioned
above.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"We have various small DT fixes, and one important regression fix:
The recent device tree bugfixes that were intended to address issues
that 'dtc' started warning about in 4.15 fixed various USB PHY device
nodes, but it turns out that we had code that depended on those nodes
being incorrect and the probe failing with a particular error code.
With the workaround we can also deal with correct device nodes.
The DT fixes include:
- Allwinner A10 and A20 had the display pipeline set up incorrectly
(introduced in v4.15)
- The Altera PMU lacked an interrupt-parent (never worked)
- Pin muxing on the Openblocks A7 (never worked)
- Clocks might get set up wrong on Armada 7K/8K (4.15 regression)
We now have additional device tree patches to address all the
remaining warnings introduced in 4.15, but decided to queue them for
4.16 instead, to avoid risking another regression like the USB PHY
thing mentioned above.
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
phy: work around 'phys' references to usb-nop-xceiv devices
ARM: sunxi_defconfig: Enable CMA
arm64: dts: socfpga: add missing interrupt-parent
ARM: dts: sun[47]i: Fix display backend 1 output to TCON0 remote endpoint
ARM64: dts: marvell: armada-cp110: Fix clock resources for various node
ARM: dts: da850-lcdk: Remove leading 0x and 0s from unit address
ARM: dts: kirkwood: fix pin-muxing of MPP7 on OpenBlocks A7
This adds support for volume up/down keys in the dts.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The clcd device is lacking an interrupt-parent property, which makes
the interrupt unusable and shows up as a warning with the latest
dtc version:
arch/arm/boot/dts/ste-nomadik-s8815.dtb: Warning (interrupts_property): Missing interrupt-parent for /amba/clcd@10120000
arch/arm/boot/dts/ste-nomadik-nhk15.dtb: Warning (interrupts_property): Missing interrupt-parent for /amba/clcd@10120000
I looked up the old board files and found that this interrupt has
the same irqchip as all the other on-chip device, it just needs one
extra line.
Fixes: 17470b7da11c ("ARM: dts: add the CLCD LCD display to the NHK15")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'gemini-dts-update-3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into next/dt
Pull "DTS changes to enable Ethernet on the Gemini boards" from Linus Walleij:
I realize it's late. Like really late. But Dmiller merged the ethernet
bindings and the driver for Gemini ethernet, and Gemini is all about
networking.
So for a late merge consideration here are the two patches giving
ethernet on Gemini, on top of what is already merged.
* tag 'gemini-dts-update-3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik:
ARM: dts: Add ethernet to a bunch of platforms
ARM: dts: Add ethernet to the Gemini SoC
The DRM driver most notably, but also out of tree drivers (for now) like
the VPU or GPU drivers, are quite big consumers of large, contiguous memory
buffers. However, the sunxi_defconfig doesn't enable CMA in order to
mitigate that, which makes them almost unusable.
Enable it to make sure it somewhat works.
Cc: <stable@vger.kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* pm-cpufreq: (36 commits)
cpufreq: scpi: remove arm_big_little dependency
drivers: psci: remove cluster terminology and dependency on physical_package_id
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
cpufreq: intel_pstate: Add Skylake servers support
cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
cpufreq: imx6q: add 696MHz operating point for i.mx6ul
ARM: dts: imx6ul: add 696MHz operating point
cpufreq: stats: Change return type of cpufreq_stats_update() as void
powernv-cpufreq: Treat pstates as opaque 8-bit values
powernv-cpufreq: Fix pstate_to_idx() to handle non-continguous pstates
powernv-cpufreq: Add helper to extract pstate from PMSR
cpu_cooling: Remove static-power related documentation
cpufreq: imx6q: switch to Use clk_bulk_get() to refine clk operations
PM / OPP: Make local function ti_opp_supply_set_opp() static
PM / OPP: Add ti-opp-supply driver
dt-bindings: opp: Introduce ti-opp-supply bindings
cpufreq: ti-cpufreq: Add support for multiple regulators
cpufreq: ti-cpufreq: Convert to module_platform_driver
cpufreq: Add DVFS support for Armada 37xx
MAINTAINERS: add new entries for Armada 37xx cpufreq driver
...
Following what has been done for other subsystems, move the remaining PCI
related code out of drivers/of/ and into drivers/pci/of.c
With this, we can kill a few kconfig symbols.
Signed-off-by: Rob Herring <robh@kernel.org>
[bhelgaas: minor whitespace, comment cleanups]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Frank Rowand <frowand.list@gmail.com>
As per 90caccdd8cc0 ("bpf: fix bpf_tail_call() x64 JIT"), the index used
for array lookup is defined to be 32-bit wide. Update a misleading
comment that suggests it is 64-bit wide.
Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
When the source and destination register are identical, our JIT does not
generate correct code, which leads to kernel oopses.
Fix this by (a) generating more efficient code, and (b) making use of
the temporary earlier if we will overwrite the address register.
Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
When an eBPF program tail-calls another eBPF program, it enters it after
the prologue to avoid having complex stack manipulations. This can lead
to kernel oopses, and similar.
Resolve this by always using a fixed stack layout, a CPU register frame
pointer, and using this when reloading registers before returning.
Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
The stack layout documentation incorrectly suggests that the BPF JIT
scratch space starts immediately below BPF_FP. This is not correct,
so let's fix the documentation to reflect reality.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Move the stack documentation towards the top of the file, where it's
relevant for things like the register layout.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
As per 2dede2d8e925 ("ARM EABI: stack pointer must be 64-bit aligned
after a CPU exception") the stack should be aligned to a 64-bit boundary
on EABI systems. Ensure that the eBPF JIT appropraitely aligns the
stack.
Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
