Kevin Brodsky [Tue, 8 Nov 2016 17:55:46 +0000 (17:55 +0000)]
drivers: psci: PSCI checker module
On arm and arm64, PSCI is one of the possible firmware interfaces
used for power management. This includes both turning CPUs on and off,
and suspending them (entering idle states).
This patch adds a PSCI checker module that enables basic testing of
PSCI operations during startup. There are two main tests: CPU
hotplugging and suspending.
In the hotplug tests, the hotplug API is used to turn off and on again
all CPUs in the system, and then all CPUs in each cluster, checking
the consistency of the return codes.
In the suspend tests, a high-priority thread is created on each core
and uses low-level cpuidle functionalities to enter suspend, in all
the possible states and multiple times. This should allow a maximum
number of CPUs to enter the same sleep state at the same or slightly
different time.
In essence, the suspend tests use a principle similar to that of the
intel_powerclamp driver (drivers/thermal/intel_powerclamp.c), but the
threads are only kept for the duration of the test (they are already
gone when userspace is started) and it does not require to stop/start
the tick.
While in theory power management PSCI functions (CPU_{ON,OFF,SUSPEND})
could be directly called, this proved too difficult as it would imply
the duplication of all the logic used by the kernel to allow for a
clean shutdown/bringup/suspend of the CPU (the deepest sleep states
implying potentially the shutdown of the CPU).
Note that this file cannot be compiled as a loadable module, since it
uses a number of non-exported identifiers (essentially for
PSCI-specific checks and direct use of cpuidle) and relies on the
absence of userspace to avoid races when calling hotplug and cpuidle
functions.
For now at least, CONFIG_PSCI_CHECKER is mutually exclusive with
CONFIG_TORTURE_TEST, because torture tests may also use hotplug and
cause false positives in the hotplug tests.
Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: James Morse <james.morse@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> [torture test config] Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
[lpieralisi: added cpuidle locking, reworded commit log/kconfig entry] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Olof Johansson [Sat, 19 Nov 2016 02:42:33 +0000 (18:42 -0800)]
Merge tag 'tegra-for-4.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
soc: tegra: Core SoC changes for v4.10-rc1
This contains mostly cleanup and new feature work on the power
management controller as well as the addition of a Kconfig symbol for
the new Tegra186 (Parker) SoC generation.
* tag 'tegra-for-4.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: pmc: Use consistent naming for PM domains
soc/tegra: pmc: Remove genpd when adding provider fails
soc/tegra: pmc: Check return code for pm_genpd_init()
soc/tegra: pmc: Clean-up I/O rail error messages
soc/tegra: pmc: Simplify IO rail bit handling
soc/tegra: pmc: Guard against uninitialised PMC clock
soc/tegra: pmc: Add I/O pad voltage support
soc/tegra: pmc: Use consistent ordering of bit definitions
soc/tegra: pmc: Correct type of variable for tegra_pmc_readl()
soc/tegra: pmc: Use BIT macro for register field definition
Olof Johansson [Sat, 19 Nov 2016 02:32:57 +0000 (18:32 -0800)]
Merge tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
bus: Add Tegra GMI support
This provides a driver to enable the use of the Generic Memory Interface
found on Tegra SoCs that can host various types of high-speed devices.
* tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
bus: Add support for Tegra Generic Memory Interface
dt/bindings: Add bindings for Tegra GMI controller
Olof Johansson [Sat, 19 Nov 2016 02:28:14 +0000 (18:28 -0800)]
Merge tag 'tegra-for-4.10-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
firmware: Add Tegra IVC and BPMP support
IVC is an inter-processor communication protocol that uses shared memory
to exchange data between processors. The BPMP driver makes use of this
to communicate with the Boot and Power Management Processor (BPMP) and
uses an additional hardware synchronization primitive from the HSP block
to signal availability of new data (doorbell).
Firmware running on the BPMP implements a number of services such as the
control of clocks and resets within the system, or the ability to ungate
or gate power partitions.
* tag 'tegra-for-4.10-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
dt-bindings: firmware: Allow child nodes inside the Tegra BPMP
dt-bindings: Add power domains to Tegra BPMP firmware
firmware: tegra: Add BPMP support
firmware: tegra: Add IVC library
dt-bindings: firmware: Add bindings for Tegra BPMP
Olof Johansson [Sat, 19 Nov 2016 02:23:06 +0000 (18:23 -0800)]
Merge tag 'tegra-for-4.10-mailbox' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
mailbox: Add Tegra HSP driver
This contains the device tree bindings and a driver for the Tegra HSP, a
hardware block that provides hardware synchronization primitives and is
the foundation for inter-processor communication between CPU and BPMP.
* tag 'tegra-for-4.10-mailbox' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells()
mailbox: Add Tegra HSP driver
dt-bindings: mailbox: Add Tegra HSP binding
soc/tegra: Add Tegra186 support
Olof Johansson [Sat, 19 Nov 2016 00:17:45 +0000 (16:17 -0800)]
Merge tag 'reset-for-4.10' of git://git.pengutronix.de/git/pza/linux into next/drivers
Reset controller changes for v4.10
- remove obsolete STiH41[56] platform support
- add Oxford Semiconductor OX820 support
- add reset index include files for OX810SE and OX820
- make drivers with boolean Kconfig options explicitly
non-modular
- allow shared pulsed resets via reset_control_reset, which
in this case means that the reset must have been triggered
once, but possibly earlier, after the function returns, and
is never triggered again for the lifetime of the reset
control
* tag 'reset-for-4.10' of git://git.pengutronix.de/git/pza/linux:
reset: allow using reset_control_reset with shared reset
reset: lpc18xx: make it explicitly non-modular
reset: zynq: make it explicitly non-modular
reset: sunxi: make it explicitly non-modular
reset: socfpga: make it explicitly non-modular
reset: berlin: make it explicitly non-modular
dt-bindings: reset: oxnas: Update for OX820
dt-bindings: reset: oxnas: Add include file with reset indexes
reset: oxnas: Add OX820 support
reset: sti: softreset: Remove obsolete platforms from dt binding doc.
reset: sti: Remove STiH415/6 reset support
Olof Johansson [Fri, 18 Nov 2016 17:53:55 +0000 (09:53 -0800)]
Merge tag 'at91-ab-4.10-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/drivers
Drivers for 4.10:
- few fixes for the memory drivers
- minimal security module driver
- support for the Secure SRAM
* tag 'at91-ab-4.10-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
misc: sram: add Atmel securam support
misc: sram: document new compatible
ARM: at91: add secumod register definitions
Documentation: dt: atmel-at91: Document secumod bindings
memory: atmel-sdramc: use builtin_platform_driver to simplify the code
memory: atmel-ebi: fix return value check in at91_ebi_dev_disable()
Stephen Warren [Tue, 19 Jul 2016 19:14:41 +0000 (13:14 -0600)]
dt-bindings: firmware: Allow child nodes inside the Tegra BPMP
The BPMP implements some services which must be represented by separate
nodes. For example, it can provide access to certain I2C controllers,
and the I2C bindings represent each I2C controller as a device tree
node. Update the binding to describe how the BPMP supports this.
Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com>
[treding@nvidia.com: renamed bpmp-i2c to i2c as per Rob] Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Fri, 19 Aug 2016 17:05:35 +0000 (19:05 +0200)]
firmware: tegra: Add BPMP support
The Boot and Power Management Processor (BPMP) is a co-processor found
on Tegra SoCs. It is designed to handle the early stages of the boot
process and offload power management tasks (such as clocks, resets,
powergates, ...) as well as system control services.
Compared to the ARM SCPI, the services provided by BPMP are message-
based rather than method-based. The BPMP firmware driver provides the
services to transmit data to and receive data from the BPMP. Users can
also register a Message ReQuest (MRQ), for which a service routine will
be run when a corresponding event is received from the firmware.
A set of messages, called the BPMP ABI, are specified for a number of
different services provided by the BPMP (such as clocks or resets).
Based on work by Sivaram Nair <sivaramn@nvidia.com> and Joseph Lo
<josephl@nvidia.com>.
Thierry Reding [Fri, 19 Aug 2016 17:05:04 +0000 (19:05 +0200)]
firmware: tegra: Add IVC library
The Inter-VM communication (IVC) is a communication protocol which is
designed for interprocessor communication (IPC) or the communication
between the hypervisor and the virtual machine with a guest OS.
Message channels are used to communicate between processors. They are
backed by DRAM or SRAM, so care must be taken to maintain coherence of
data.
The IVC library maintains memory-based descriptors for the transmission
and reception channels as well as the data coherence of the counter and
payload. Clients, such as the driver for the BPMP firmware, can use the
library to exchange messages with remote processors.
Based on work by Peter Newman <pnewman@nvidia.com> and Joseph Lo
<josephl@nvidia.com>.
Joseph Lo [Tue, 5 Jul 2016 09:04:24 +0000 (17:04 +0800)]
dt-bindings: firmware: Add bindings for Tegra BPMP
The Boot and Power Management Processor (BPMP) is a co-processor found
in Tegra SoCs. It is designed to handle the early stages of the boot
process as well as to offload power management tasks (such as clocks,
resets, powergates, ...).
The binding document defines the resources that are used by the BPMP
firmware, which implements the interprocessor communication (IPC)
between the CPU and the BPMP.
Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Dan Carpenter [Fri, 18 Nov 2016 11:34:10 +0000 (14:34 +0300)]
mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells()
We have to use the _safe version of list_for_each() because we're
freeing the pointer as we go along. (This might not show up testing
depending on what config options you have enabled).
Thierry Reding [Fri, 19 Aug 2016 17:19:39 +0000 (19:19 +0200)]
mailbox: Add Tegra HSP driver
This driver exposes a mailbox interface for interprocessor communication
using the Hardware Synchronization Primitives (HSP) module's doorbell
mechanism. There are multiple HSP instances and they provide additional
features such as shared mailboxes, shared and arbitrated semaphores.
A driver for a remote processor can use the mailbox client provided by
the HSP driver and build an IPC protocol on top of this synchronization
mechanism.
Olof Johansson [Fri, 18 Nov 2016 07:46:51 +0000 (23:46 -0800)]
Merge tag 'v4.9-next-soc' of https://github.com/mbgg/linux-mediatek into next/drivers
- prepare mtk-scpsys to for multi soc support
- add support for mt2701 to mtk-scpsys
* tag 'v4.9-next-soc' of https://github.com/mbgg/linux-mediatek:
soc: mediatek: Add MT2701 scpsys driver
soc: mediatek: Refine scpsys to support multiple platform
Olof Johansson [Fri, 18 Nov 2016 07:44:43 +0000 (23:44 -0800)]
Merge tag 'davinci-for-v4.10/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
This pull request adds two new drivers for better
support for LCD found on DaVinci DA8xx devices.
They allow configuration of memory interface and
bus priorities on the SoC to allow sufficient
bandwidth for the LCD and prevent underruns.
The DT bindings have been reviewed by Rob and
patches have been reviewed by Kevin.
* tag 'davinci-for-v4.10/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
bus: davinci: add support for da8xx bus master priority control
memory: davinci: add support for da8xx DDR2/mDDR controller
Olof Johansson [Fri, 18 Nov 2016 07:38:27 +0000 (23:38 -0800)]
Merge tag 'qcom-drivers-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers
Qualcomm ARM Based Driver Updates for v4.10
* Fixup QCOM SCM to use devm_reset_controller_register
* Add QCOM pinctrl to Qualcomm MAINTAINERS entry
* Add PM8994 regulator definitions
* Add stub for WCNSS_CTRL API
* tag 'qcom-drivers-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
firmware: qcom: scm: Use devm_reset_controller_register()
MAINTAINERS: add drivers/pinctrl/qcom to ARM/QUALCOMM SUPPORT
pinctrl: pm8994: add pad voltage regulator defines
soc: qcom: wcnss_ctrl: Stub wcnss_ctrl API
Olof Johansson [Fri, 18 Nov 2016 07:31:18 +0000 (23:31 -0800)]
Merge tag 'v4.10-rockchip-drivers1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/drivers
Changes to the power-domain driver including counter presets now being set
by firmware on the rk3399, avoiding infite loops when powering on/off a
domain and actually returning an error if power-domain addition fails.
The last part requires usage of the (new in 4.9-rc1) pm_genpd_remove
functionality as well.
* tag 'v4.10-rockchip-drivers1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
soc: rockchip: power-domain: Handle errors from of_genpd_add_provider_onecell
soc: rockchip: power-domain: use pm_genpd_remove in error cleanup
soc: rockchip: power-domain: avoid infinite loop
soc: rockchip: power-domain: Don't (incorrectly) set rk3399 up/down counts
Joseph Lo [Tue, 5 Jul 2016 09:04:22 +0000 (17:04 +0800)]
dt-bindings: mailbox: Add Tegra HSP binding
Add DT binding for the Hardware Synchronization Primitives (HSP). The
HSP is designed for the processors to share resources and communicate
with one another. A set of hardware synchronization primitives for
interprocessor communication (IPC) is provided. IPC protocols can use
use these hardware synchronization primitives when operating between
processors in an AMP configuration.
Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Tue, 8 Nov 2016 10:05:03 +0000 (11:05 +0100)]
soc/tegra: pmc: Use consistent naming for PM domains
The various error messages refer to the PM domains as "power domain",
"genpd" and "PM domain". That's confusing, so convert all error messages
to use the most prominent: "PM domain".
Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Jon Hunter [Sat, 22 Oct 2016 19:23:56 +0000 (20:23 +0100)]
soc/tegra: pmc: Remove genpd when adding provider fails
Commit 3fe577107ccf ("PM / Domains: Add support for removing PM
domains") add support for removing PM domains. Update the Tegra PMC
driver to remove PM domains if we fail to add a provider for the PM
domain.
Please note that the code under 'power_on_cleanup' label does not
really belong in the clean-up error path for tegra_powergate_add().
To keep the error path simple, remove this label and move the
associated code to where it needs to be invoked.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Jon Hunter [Sat, 22 Oct 2016 19:23:55 +0000 (20:23 +0100)]
soc/tegra: pmc: Check return code for pm_genpd_init()
Commit 7eb231c337e0 ("PM / Domains: Convert pm_genpd_init() to return
an error code") updated pm_genpd_init() to return an error code. Update
the Tegra PMC driver to check the return value from pm_genpd_init() and
handle any errors returned.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
[treding@nvidia.com: use pr_err() instead of dev_err()] Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Tue, 8 Nov 2016 09:58:32 +0000 (10:58 +0100)]
soc/tegra: pmc: Clean-up I/O rail error messages
Use pr_err() instead of dev_err() when the pmc->dev field has not been
initialized yet and add a few missing error messages as well as remove
duplicate ones.
Based on work by Jon Hunter <jonathanh@nvidia.com>.
Jon Hunter [Sat, 22 Oct 2016 19:23:53 +0000 (20:23 +0100)]
soc/tegra: pmc: Simplify IO rail bit handling
The function tegra_io_rail_prepare() converts the IO rail ID into a
bit position that is used to check the status and control the IO rail
in the PMC registers. However, rather than converting to a bit position
it is more useful to convert to a bit-mask because this is what is
actually used. By doing so the BIT() marco only needs to be used once
and we can use the IO_DPD_REQ_CODE_MASK when checking for erroneous rail
IDs.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
[treding@nvidia.com: rebase and rename bit -> mask] Signed-off-by: Thierry Reding <treding@nvidia.com>
Jon Hunter [Sat, 22 Oct 2016 19:23:52 +0000 (20:23 +0100)]
soc/tegra: pmc: Guard against uninitialised PMC clock
It is possible for the public functions, tegra_io_rail_power_on/off()
to be called before the PMC device has been probed. If this happens
then the pmc->clk member will not be initialised and the call to
clk_get_rate() in tegra_io_rail_prepare() will return zero and lead
to a divide-by-zero exception. The function clk_get_rate() will return
zero if a NULl clk pointer is passed. Therefore, rather that checking
if pmc->clk is initialised, fix this by checking the return value for
clk_get_rate() to make sure it is not zero.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Laxman Dewangan [Mon, 10 Oct 2016 13:14:34 +0000 (15:14 +0200)]
soc/tegra: pmc: Add I/O pad voltage support
I/O pins on Tegra SoCs are grouped into so-called I/O pads. Each such
pad can be used to control the common voltage signal level and power
state of the pins in the given pad.
I/O pads can be powered down even if the system is active, which can
save power from that I/O interface. For SoC generations prior to
Tegra124 the I/O pad voltage is automatically detected and hence the
system software doesn't need to configure it. However, starting with
Tegra210 the detection logic has been removed, so explicit control of
the I/O pad voltage by system software is required.
Joseph Lo [Tue, 5 Jul 2016 09:04:27 +0000 (17:04 +0800)]
soc/tegra: Add Tegra186 support
The Tegra186 features a combination of Denver and Cortex-A57 CPU cores
and a GPU based on the Pascal architecture. It contains an ADSP with a
Cortex-A9 CPU used for audio processing, hardware video encoders and
decoders with multi-format support, ISP for image capture processing
and BPMP for power management.
Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
bus: davinci: add support for da8xx bus master priority control
Create the driver for the da8xx master peripheral priority
configuration and implement support for writing to the three
Master Priority registers on da850 SoCs.
Reviewed-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
memory: davinci: add support for da8xx DDR2/mDDR controller
Create a new driver for the da8xx DDR2/mDDR controller and implement
support for writing to the Peripheral Bus Burst Priority Register.
Reviewed-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
reset: allow using reset_control_reset with shared reset
Some SoCs (for example Amlogic GXBB) implement a reset controller which
only supports a reset pulse (triggered via reset_control_reset). At the
same time multiple devices (in case of the Amlogic GXBB SoC both USB
PHYs) are sharing the same reset line.
This patch allows using reset_control_reset also for shared resets.
There are limitations though:
reset_control_reset can only be used if reset_control_assert was not
used yet.
reset_control_assert can only be used if reset_control_reset was not
used yet.
For shared resets the reset is only triggered once for the lifetime of
the reset_control instance (the reset can be triggered again if all
consumers of that specific reset_control are gone, as the reset
framework will free the reset_control instance in that case).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Michael Scott [Fri, 21 Oct 2016 23:02:52 +0000 (16:02 -0700)]
MAINTAINERS: add drivers/pinctrl/qcom to ARM/QUALCOMM SUPPORT
When running checkpatch.pl on a new pinctrl driver in
drivers/pinctrl/qcom, I noticed a warning about creating
a new maintainer. The drivers/pinctrl/qcom folder doesn't have
anyone assigned in the MAINTAINERS file.
Let's assign it to ARM/QUALCOMM SUPPORT.
Signed-off-by: Michael Scott <michael.scott@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
soc: rockchip: power-domain: use pm_genpd_remove in error cleanup
The newly introduced pm_genpd_remove reverts the initialization done
by pm_genpd_init and is necessary in the error path of the rockchip
power-domain driver.
Without it the driver will in the error case cleanup the devm-allocated
structures including the elements referenced in the gpd_list thus making
deactivation of unused domains (and probably later genpd accesses as
well) fail by accessing invalid pointers.
Olof Johansson [Tue, 8 Nov 2016 03:17:27 +0000 (19:17 -0800)]
Merge tag 'renesas-drivers-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers
Renesas ARM Based SoC Drivers Updates for v4.10
* Add support for the r8a7743 SoC to rcar-sysc
* tag 'renesas-drivers-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
soc: renesas: rcar-sysc: add R8A7743 support
ARM: shmobile: r8a7743: add power domain index macros
The Atmel secure SRAM is connected to a security module and may be erased
automatically under certain conditions. For that reason, it is necessary to
wait for the security module to flag that SRAM accesses are allowed before
accessing it.
Caesar Wang [Wed, 12 Oct 2016 18:16:08 +0000 (02:16 +0800)]
soc: rockchip: power-domain: avoid infinite loop
In some cases, we have met the infinite loop in
rockchip_pmu_set_idle_request() or rockchip_do_pmu_set_power_domain().
As the crosbug.com/p/57351 reported, the boot hangs right after this
[1.629163] bootconsole [uart8250] disabled
[1.639286] [drm:drm_core_init] Initialized drm 1.1.0 20060810
[1.645926] [drm:drm_get_platform_dev] Initialized vgem 1.0.0 20120112..
[1.654558] iommu: Adding device ff8f0000.vop to group 0
[1.660569] iommu: Adding device ff900000.vop to group 1
<hang>
This patch adds the error message and timeout to avoid infinite loop if
it fails to get the ack.
Signed-off-by: Caesar Wang <wxt@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
drivers/reset/Makefile:obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o
arch/arm/mach-zynq/Kconfig:config ARCH_ZYNQ
arch/arm/mach-zynq/Kconfig: bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the few remaining traces of modular macro usage, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
arch/arm/mach-sunxi/Kconfig:menuconfig ARCH_SUNXI
arch/arm/mach-sunxi/Kconfig: bool "Allwinner SoCs" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the few remaining traces of modular macro usage, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
arch/arm/mach-berlin/Kconfig:menuconfig ARCH_BERLIN
arch/arm/mach-berlin/Kconfig: bool "Marvell Berlin SoCs" if ARCH_MULTI_V7
or
arch/arm64/Kconfig.platforms:config ARCH_BERLIN
arch/arm64/Kconfig.platforms: bool "Marvell Berlin SoC Family"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Linus Torvalds [Sun, 23 Oct 2016 23:58:55 +0000 (16:58 -0700)]
Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs
Pull UBI[FS] fixes from Richard Weinberger:
"This contains fixes for issues in both UBI and UBIFS:
- Fallout from the merge window, refactoring UBI code introduced some
issues.
- Fixes for an UBIFS readdir bug which can cause getdents() to busy
loop for ever and a bug in the UBIFS xattr code"
* tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs:
ubifs: Abort readdir upon error
UBI: Fix crash in try_recover_peb()
ubi: fix swapped arguments to call to ubi_alloc_aeb
ubifs: Fix xattr_names length in exit paths
ubifs: Rename ubifs_rename2
Linus Torvalds [Sun, 23 Oct 2016 23:52:19 +0000 (16:52 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A few bug fixes and add some missing KERN_CONT annotations"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: add missing KERN_CONT to a few more debugging uses
fscrypto: lock inode while setting encryption policy
ext4: correct endianness conversion in __xattr_check_inode()
fscrypto: make XTS tweak initialization endian-independent
ext4: do not advertise encryption support when disabled
jbd2: fix incorrect unlock on j_list_lock
ext4: super.c: Update logging style using KERN_CONT
- Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni +
Nixon Vincent)
- Revert a v4.8 residual overflow change, that breaks sg_inq with
small allocation lengths.
There are a number of folks stress testing the v4.1.y regression fix
in their environments, and more folks doing iser-target I/O stress
testing atop recent v4.x.y code.
There is also one v4.2.y+ RCU conversion regression related to
explicit NodeACL configfs changes, that is still being tracked down"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target/tcm_fc: use CPU affinity for responses
target/tcm_fc: Update debugging statements to match libfc usage
target/tcm_fc: return detailed error in ft_sess_create()
target/tcm_fc: print command pointer in debug message
target: fix potential race window in target_sess_cmd_list_waiting()
Revert "target: Fix residual overflow handling in target_complete_cmd_with_length"
target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
iscsi-target: fix iscsi cmd leak
iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"
target/user: Fix comments to not refer to data ring
target/user: Return an error if cmd data size is too large
target/user: Use sense_reason_t in tcmu_queue_cmd_ring
Linus Torvalds [Sun, 23 Oct 2016 22:56:23 +0000 (15:56 -0700)]
Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi
Pull IPMI updates from Corey Minyard:
"A small bug fix and a new driver for acting as an IPMI device.
I was on vacation during the merge window (a long vacation) but this
is a bug fix that should go in and a new driver that shouldn't hurt
anything.
This has been in linux-next for a month or so"
* tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: fix crash on reading version from proc after unregisted bmc
ipmi/bt-bmc: remove redundant return value check of platform_get_resource()
ipmi/bt-bmc: add a dependency on ARCH_ASPEED
ipmi: Fix ioremap error handling in bt-bmc
ipmi: add an Aspeed BT IPMI BMC driver
Linus Torvalds [Sat, 22 Oct 2016 17:23:15 +0000 (10:23 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"This updates contains:
- A revert which addresses a boot failure on ARM Sun5i platforms
- A new clocksource driver, which has been delayed beyond rc1 due to
an interrupt driver issue which was unearthed by this driver. The
debugging of that issue and the discussion about the proper
solution made this driver miss the merge window. There is no point
in delaying it for a full cycle as it completes the basic mainline
support for the new JCore platform and does not create any risk
outside of that platform"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
clocksource: Add J-Core timer/clocksource driver
of: Add J-Core timer bindings
Linus Torvalds [Sat, 22 Oct 2016 16:58:49 +0000 (09:58 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Three fixes, a hw-enablement and a cross-arch fix/enablement change:
- SGI/UV fix for older platforms
- x32 signal handling fix
- older x86 platform bootup APIC fix
- AVX512-4VNNIW (Neural Network Instructions) and AVX512-4FMAPS
(Multiply Accumulation Single precision instructions) enablement.
- move thread_info back into x86 specific code, to make life easier
for other architectures trying to make use of
CONFIG_THREAD_INFO_IN_TASK_STRUCT=y"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/smp: Don't try to poke disabled/non-existent APIC
sched/core, x86: Make struct thread_info arch specific again
x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()
x86/platform/UV: Fix support for EFI_OLD_MEMMAP after BIOS callback updates
x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features
x86/vmware: Skip timer_irq_works() check on VMware
Linus Torvalds [Sat, 22 Oct 2016 16:39:10 +0000 (09:39 -0700)]
Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vmap stack fixes from Ingo Molnar:
"This is fallout from CONFIG_HAVE_ARCH_VMAP_STACK=y on x86: stack
accesses that used to be just somewhat questionable are now totally
buggy.
These changes try to do it without breaking the ABI: the fields are
left there, they are just reporting zero, or reporting narrower
information (the maps file change)"
* 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mm: Change vm_is_stack_for_task() to vm_is_stack_for_current()
fs/proc: Stop trying to report thread stacks
fs/proc: Stop reporting eip and esp in /proc/PID/stat
mm/numa: Remove duplicated include from mprotect.c
Linus Torvalds [Sat, 22 Oct 2016 16:33:51 +0000 (09:33 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"Mostly irqchip driver fixes, plus a symbol export"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kernel/irq: Export irq_set_parent()
irqchip/gic: Add missing \n to CPU IF adjustment message
irqchip/jcore: Don't show Kconfig menu item for driver
irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
Linus Torvalds [Sat, 22 Oct 2016 02:13:00 +0000 (19:13 -0700)]
Merge tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes marked for stable:
- Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
- cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
Fixes for code merged this cycle:
- Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
- Drop dump_numa_memory_topology() (Michael Ellerman)
- Fix numa topology console print (Aneesh Kumar K.V)
- Ignore the pkey system calls for now (Stephen Rothwell)"
* tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Ignore the pkey system calls for now
powerpc: Fix numa topology console print
powerpc/mm: Drop dump_numa_memory_topology()
cxl: Prevent adapter reset if an active context exists
powerpc/boot: Fix boot on systems with uncompressed kernel image
powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
Linus Torvalds [Sat, 22 Oct 2016 02:09:29 +0000 (19:09 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"ARM:
- avoid livelock when walking guest page tables
- fix HYP mode static keys without CC_HAVE_ASM_GOTO
MIPS:
- fix a build error without TRACEPOINTS_ENABLED
s390:
- reject a malformed userspace configuration
x86:
- suppress a warning without CONFIG_CPU_FREQ
- initialize whole irq_eoi array"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
arm/arm64: KVM: Map the BSS at HYP
arm64: KVM: Take S1 walks into account when determining S2 write faults
KVM: s390: reject invalid modes for runtime instrumentation
kvm: x86: memset whole irq_eoi
kvm/x86: Fix unused variable warning in kvm_timer_init()
KVM: MIPS: Add missing uaccess.h include
Linus Torvalds [Sat, 22 Oct 2016 02:06:59 +0000 (19:06 -0700)]
Merge tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client bugfixes from Anna Schumaker:
"Just two bugfixes this time:
Stable bugfix:
- Fix last_write_offset incorrectly set to page boundary
Other bugfix:
- Fix missing-braces warning"
* tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
nfs4: fix missing-braces warning
pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary
Linus Torvalds [Fri, 21 Oct 2016 22:54:45 +0000 (15:54 -0700)]
Merge tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix an issue related to system resume in the new WDAT-based
watchdog driver and a return value of a stub function in the ACPI CPPC
framework.
Specifics:
- Update the ACPI WDAT-based watchdog driver to ping the hardware
during system resume to prevent a reset from occurring after the
resume is complete (Mika Westerberg).
- Fix the return value of the pcc_mbox_request_channel() stub for
CONFIG_PCC unset (Hoan Tran)"
* tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
watchdog: wdat_wdt: Ping the watchdog on resume
mailbox: PCC: Fix return value of pcc_mbox_request_channel()
Linus Torvalds [Fri, 21 Oct 2016 17:57:09 +0000 (10:57 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Five small fixes.
Some of these, like the nested spinlock overwriting saved flags and
the Kasan use after free look serious, but they seem not to have been
picked up in testing or seen in the field.
The biggest user visible issue is probably the wrong device handler
for Clariion, which means that alua doesn't bind to the array like it
should"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ipr: Fix async error WARN_ON
scsi: zfcp: spin_lock_irqsave() is not nestable
scsi: Remove one useless stack variable
scsi: Fix use-after-free
scsi: Replace wrong device handler name for CLARiiON arrays
Linus Torvalds [Fri, 21 Oct 2016 17:54:01 +0000 (10:54 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A set of fixes that missed the merge window, mostly due to me being
away around that time.
Nothing major here, a mix of nvme cleanups and fixes, and one fix for
the badblocks handling"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvmet: use symbolic constants for CNS values
nvme: use symbolic constants for CNS values
nvme.h: add an enum for cns values
nvme.h: don't use uuid_be
nvme.h: resync with nvme-cli
nvme: Add tertiary number to NVME_VS
nvme : Add sysfs entry for NVMe CMBs when appropriate
nvme: don't schedule multiple resets
nvme: Delete created IO queues on reset
nvme: Stop probing a removed device
badblocks: fix overlapping check for clearing
Linus Torvalds [Fri, 21 Oct 2016 17:48:58 +0000 (10:48 -0700)]
Merge tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"This includes:
- Fix for a Layerscape driver issue that causes a use-before-set
crash
- Maintainer update for the Synopsis prototyping device driver"
* tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: designware-plat: Update author email address
PCI: layerscape: Fix drvdata usage before assignment
PCI: designware-plat: Change maintainer to Jose Abreu
Marc Zyngier [Thu, 20 Oct 2016 09:17:21 +0000 (10:17 +0100)]
arm/arm64: KVM: Map the BSS at HYP
When used with a compiler that doesn't implement "asm goto"
(such as the AArch64 port of GCC 4.8), jump labels generate a
memory access to find out about the value of the key (instead
of just patching the code). The key itself is likely to be
stored in the BSS.
This is perfectly fine, except that we don't map the BSS at HYP,
leading to an exploding kernel at the first access. The obvious
fix is simply to map the BSS there (which should have been done
a long while ago, but hey...).
Reported-by: Eric Auger <eric.auger@redhat.com> Tested-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Will Deacon [Thu, 29 Sep 2016 11:37:01 +0000 (12:37 +0100)]
arm64: KVM: Take S1 walks into account when determining S2 write faults
The WnR bit in the HSR/ESR_EL2 indicates whether a data abort was
generated by a read or a write instruction. For stage 2 data aborts
generated by a stage 1 translation table walk (i.e. the actual page
table access faults at EL2), the WnR bit therefore reports whether the
instruction generating the walk was a load or a store, *not* whether the
page table walker was reading or writing the entry.
For page tables marked as read-only at stage 2 (e.g. due to KSM merging
them with the tables from another guest), this could result in livelock,
where a page table walk generated by a load instruction attempts to
set the access flag in the stage 1 descriptor, but fails to trigger
CoW in the host since only a read fault is reported.
This patch modifies the arm64 kvm_vcpu_dabt_iswrite function to
take into account stage 2 faults in stage 1 walks. Since DBM cannot be
disabled at EL2 for CPUs that implement it, we assume that these faults
are always causes by writes, avoiding the livelock situation at the
expense of occasional, spurious CoWs.
We could, in theory, do a bit better by checking the guest TCR
configuration and inspecting the page table to see why the PTE faulted.
However, I doubt this is measurable in practice, and the threat of
livelock is real.
Cc: <stable@vger.kernel.org> Cc: Julien Grall <julien.grall@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Linus Torvalds [Fri, 21 Oct 2016 16:14:35 +0000 (09:14 -0700)]
Merge tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux
Pull more drm fixes from Dave Airlie:
"Mainly some vmwgfx fixes, but also some fixes for armada, etnaviv and
fsl-dcu"
* tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux:
drm/fsl-dcu: enable pixel clock when enabling CRTC
drm/fsl-dcu: do not transfer registers in mode_set_nofb
drm/fsl-dcu: do not transfer registers on plane init
drm/fsl-dcu: enable TCON bypass mode by default
drm/vmwgfx: Adjust checks for null pointers in 13 functions
drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
drm/vmwgfx: Avoid validating views on view destruction
drm/vmwgfx: Limit the user-space command buffer size
drm/vmwgfx: Remove a leftover debug printout
drm/vmwgfx: Allow resource relocations on byte boundaries
drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
drm/vmwgfx: Replace numeric parameter like 0444 with macro
drm/etnaviv: block 64K of address space behind each cmdstream
drm/etnaviv: ensure write caches are flushed at end of user cmdstream
drm/armada: fix clock counts
Joao Pinto [Fri, 21 Oct 2016 09:31:48 +0000 (10:31 +0100)]
PCI: designware-plat: Update author email address
Although I am leaving Synopsys, I would like to keep working with the linux
kernel community and help in what you might find useful. For that I am
sending this patch to change my contact e-mail.
Sudip Mukherjee [Thu, 6 Oct 2016 17:36:43 +0000 (23:06 +0530)]
kernel/irq: Export irq_set_parent()
The TPS65217 driver grew interrupt support which uses
irq_set_parent(). While it's not yet clear why this is used in the first
place, building the driver as a module fails with:
The correctness of the driver change is still investigated, but for now
it's less trouble to export irq_set_parent() than dealing with the build
wreckage.
[ tglx: Rewrote changelog and made the export GPL ]
Fixes: 6556bdacf646 ("mfd: tps65217: Add support for IRQs") Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Cc: Marcin Niestroj <m.niestroj@grinn-global.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Lee Jones <lee.jones@linaro.org> Link: http://lkml.kernel.org/r/1475775403-27207-1-git-send-email-sudipm.mukherjee@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Hannes Reinecke [Mon, 22 Aug 2016 08:54:11 +0000 (10:54 +0200)]
target/tcm_fc: use CPU affinity for responses
The libfc stack assigns exchange IDs based on the CPU the request
was received on, so we need to send the responses via the same CPU.
Otherwise the send logic gets confuses and responses will be delayed,
causing exchange timeouts on the initiator side.
Signed-off-by: Hannes Reinecke <hare@suse.com> Cc: stable@vger.kernel.org # 4.5+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Hannes Reinecke [Mon, 22 Aug 2016 08:54:09 +0000 (10:54 +0200)]
target/tcm_fc: return detailed error in ft_sess_create()
Not every failure is due to out-of-memory; the ACLs might not be
set, too. So return a detailed error code in ft_sess_create()
instead of just a NULL pointer.
Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Hannes Reinecke [Mon, 22 Aug 2016 08:54:08 +0000 (10:54 +0200)]
target/tcm_fc: print command pointer in debug message
When allocating a new command we should add the pointer to the
debug statements; that allows us to match this with other debug
statements for handling data.
Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Hannes Reinecke [Mon, 22 Aug 2016 08:54:07 +0000 (10:54 +0200)]
target: fix potential race window in target_sess_cmd_list_waiting()
target_sess_cmd_list_waiting() might hit on a condition where
the kref for the command is already 0, but the destructor has
not been called yet (or is stuck in waiting for a spin lock).
Rather than leaving the command on the list we should explicitly
remove it to avoid race issues later on.
Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Dave Airlie [Fri, 21 Oct 2016 03:27:55 +0000 (13:27 +1000)]
Merge branch 'drm-etnaviv-fixes' of git://git.pengutronix.de/lst/linux into drm-fixes
2 more patches to stabilize the new MMUv2 support.
* 'drm-etnaviv-fixes' of git://git.pengutronix.de/lst/linux:
drm/etnaviv: block 64K of address space behind each cmdstream
drm/etnaviv: ensure write caches are flushed at end of user cmdstream
Dave Airlie [Fri, 21 Oct 2016 03:26:58 +0000 (13:26 +1000)]
Merge branch 'drm-vmwgfx-fixes' of ssh://people.freedesktop.org/~syeh/repos_linux into drm-fixes
vmwgfx cleanups and fixes.
* 'drm-vmwgfx-fixes' of ssh://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Adjust checks for null pointers in 13 functions
drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
drm/vmwgfx: Avoid validating views on view destruction
drm/vmwgfx: Limit the user-space command buffer size
drm/vmwgfx: Remove a leftover debug printout
drm/vmwgfx: Allow resource relocations on byte boundaries
drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
drm/vmwgfx: Replace numeric parameter like 0444 with macro
Dave Airlie [Fri, 21 Oct 2016 03:25:28 +0000 (13:25 +1000)]
Merge branch 'fixes-for-v4.9-rc2' of http://git.agner.ch/git/linux-drm-fsl-dcu into drm-fixes
This are some fixes which I hoped to still get into v4.9. I used to
test them here since about 2 weeks and Meng came around to test it
on the second platform making use of this IP too, so they are well
tested now.
* 'fixes-for-v4.9-rc2' of http://git.agner.ch/git/linux-drm-fsl-dcu:
drm/fsl-dcu: enable pixel clock when enabling CRTC
drm/fsl-dcu: do not transfer registers in mode_set_nofb
drm/fsl-dcu: do not transfer registers on plane init
drm/fsl-dcu: enable TCON bypass mode by default
Mika Westerberg [Thu, 20 Oct 2016 15:03:36 +0000 (18:03 +0300)]
watchdog: wdat_wdt: Ping the watchdog on resume
It turns out we need to ping the watchdog hardware on resume when we
re-program it. Otherwise this causes inadvertent reset to trigger
right after the resume is complete.
Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog) Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds [Thu, 20 Oct 2016 22:32:51 +0000 (15:32 -0700)]
Merge tag 'pm-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"This fixes the pointer arithmetics mess-up in the cpufreq core
introduced by one of recent commits and leading to all kinds of
breakage from kernel crashes to incorrect governor decisions (Sergey
Senozhatsky)"
* tag 'pm-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: fix overflow in cpufreq_table_find_index_dl()
Chen-Yu Tsai [Tue, 18 Oct 2016 05:49:18 +0000 (13:49 +0800)]
Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
struct clocksource is also used by the clk notifier callback, to
unregister and re-register the clocksource with a different clock rate.
clocksource_mmio_init does not pass back a pointer to the struct used,
and the clk notifier callback assumes that the struct clocksource in
struct sun5i_timer_clksrc is valid. This results in a kernel NULL
pointer dereference when the hstimer clock is changed:
Unable to handle kernel NULL pointer dereference at virtual address 00000004
[<c03a4678>] (clocksource_unbind) from [<c03a46d4>] (clocksource_unregister+0x2c/0x44)
[<c03a46d4>] (clocksource_unregister) from [<c0a6f350>] (sun5i_rate_cb_clksrc+0x34/0x3c)
[<c0a6f350>] (sun5i_rate_cb_clksrc) from [<c035ea50>] (notifier_call_chain+0x44/0x84)
[<c035ea50>] (notifier_call_chain) from [<c035edc0>] (__srcu_notifier_call_chain+0x44/0x60)
[<c035edc0>] (__srcu_notifier_call_chain) from [<c035edf4>] (srcu_notifier_call_chain+0x18/0x20)
[<c035edf4>] (srcu_notifier_call_chain) from [<c0670174>] (__clk_notify+0x70/0x7c)
[<c0670174>] (__clk_notify) from [<c06702c0>] (clk_propagate_rate_change+0xa4/0xc4)
[<c06702c0>] (clk_propagate_rate_change) from [<c0670288>] (clk_propagate_rate_change+0x6c/0xc4)
Revert the commit for now. clocksource_mmio_init can be made to pass back
a pointer, but the code churn and usage of an inner struct might not be
worth it.
Fixes: 157dfadef832 ("clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init") Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Cc: linux-sunxi@googlegroups.com Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20161018054918.26855-1-wens@csie.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Radim Krčmář [Thu, 20 Oct 2016 18:31:01 +0000 (20:31 +0200)]
Merge tag 'kvm-s390-master-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux
KVM: s390: Fix for user-triggerable WARN_ON
A malicious user space can provide an invalid mode for runtime
instrumentation via the interfaces that are normally used on
the target host during migration. This would trigger a WARN_ON
via validity intercept. Let's detect this special case.
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