Olof Johansson [Fri, 21 Aug 2015 01:47:04 +0000 (18:47 -0700)]
Merge tag 'tegra-for-4.3-cpufreq' of git://git./linux/kernel/git/tegra/linux into next/drivers
ARM: tegra: CPU frequency scaling for v4.3-rc1
This adds CPU frequency scaling support for Tegra124.
* tag 'tegra-for-4.3-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
cpufreq: Add cpufreq driver for Tegra124
cpufreq: tegra: Rename tegra-cpufreq to tegra20-cpufreq
cpufreq: tegra124: Add device tree bindings
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Fri, 21 Aug 2015 01:43:15 +0000 (18:43 -0700)]
Merge tag 'tegra-for-4.3-soc' of git://git./linux/kernel/git/tegra/linux into next/drivers
ARM: tegra: Core SoC changes for v4.3-rc1
This contains a bit more of Tegra210 support, which is shaping up pretty
nicely. Other than that there are a couple of cleanup patches here, too.
* tag 'tegra-for-4.3-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
ARM: tegra: cpuidle: implement cpuidle_state.enter_freeze()
ARM: tegra: Disable cpuidle if PSCI is available
soc/tegra: pmc: Use existing pclk reference
soc/tegra: pmc: Remove unnecessary return statement
soc: tegra: Remove redundant $(CONFIG_ARCH_TEGRA) in Makefile
soc/tegra: fuse: Add spare bit offset for Tegra210
soc/tegra: fuse: Add spare bit offset for Tegra124
soc/tegra: fuse: Add spare bit offset for Tegra114
soc/tegra: fuse: Rename core_* to soc_*
soc/tegra: fuse: Add Tegra210 support
soc/tegra: fuse: Unify Tegra20 and Tegra30 drivers
soc/tegra: fuse: Restrict legacy code to 32-bit ARM
soc/tegra: pmc: Add Tegra210 support
soc/tegra: pmc: Restrict legacy code to 32-bit ARM
soc/tegra: pmc: Avoid usage of uninitialized variable
soc/tegra: Add Tegra210 support
soc/tegra: Add Tegra132 support
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Fri, 21 Aug 2015 01:30:09 +0000 (18:30 -0700)]
Merge tag 'reset-for-4.3' of git://git.pengutronix.de/git/pza/linux into next/drivers
Reset controller changes for v4.3
- moved the DT reset binding includes from
include/dt-bindings/reset-controller to include/dt-bindings/reset
- new driver for LPC18xx Reset Generation Unit (RGU)
- of_device_id array in the STi driver changed to const.
- extend SoCFPGA reset driver to support Arria10
- new ath79 reset controller driver for AR71XX/AR9XXX
- new driver for Xilinx Zynq reset controller
* tag 'reset-for-4.3' of git://git.pengutronix.de/git/pza/linux:
reset: reset-zynq: Adding support for Xilinx Zynq reset controller.
docs: dts: Added documentation for Xilinx Zynq Reset Controller bindings.
MIPS: ath79: Add the reset controller to the AR9132 dtsi
reset: Add a driver for the reset controller on the AR71XX/AR9XXX
devicetree: Add bindings for the ATH79 reset controller
reset: socfpga: Update reset-socfpga to read the altr,modrst-offset property
doc: dt: add documentation for lpc1850-rgu reset driver
reset: add driver for lpc18xx rgu
reset: sti: constify of_device_id array
ARM: STi: DT: Move reset controller constants into common location
MAINTAINERS: add include/dt-bindings/reset path to reset controller entry
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Tue, 18 Aug 2015 20:30:18 +0000 (13:30 -0700)]
Merge tag 'renesas-clk-for-v4.3' of git://git./linux/kernel/git/horms/renesas into next/drivers
Renesas ARM Based SoC CPG/MSTP Clock Driver Updates for v4.3
* Add Clock Domain support to the Clock Pulse Generator
(CPG) Module Stop (MSTP) Clocks driver using the generic PM Domain.
* tag 'renesas-clk-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
clk: shmobile: rz: Add CPG/MSTP Clock Domain support
clk: shmobile: rcar-gen2: Add CPG/MSTP Clock Domain support
clk: shmobile: r8a7779: Add CPG/MSTP Clock Domain support
clk: shmobile: r8a7778: Add CPG/MSTP Clock Domain support
clk: shmobile: Add CPG/MSTP Clock Domain support
Signed-off-by: Olof Johansson <olof@lixom.net>
Philipp Zabel [Sun, 16 Aug 2015 15:10:20 +0000 (17:10 +0200)]
Merge branch 'reset/ath79' into reset/next
Tomeu Vizoso [Tue, 19 May 2015 14:49:12 +0000 (16:49 +0200)]
ARM: tegra: cpuidle: implement cpuidle_state.enter_freeze()
This callback is expected to do the same as enter() but it has to
guarantee that interrupts aren't enabled at any point in its execution,
as the tick is frozen.
It will be called when the system goes to suspend-to-idle and will
reduce power usage because CPUs won't be awaken for unnecessary IRQs.
By setting the CPUIDLE_FLAG_TIMER_STOP flag, we can reuse the same code
for both the enter() and enter_freeze() callbacks.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 23 Feb 2015 14:24:11 +0000 (15:24 +0100)]
ARM: tegra: Disable cpuidle if PSCI is available
This is only relevant on Tegra114 and Tegra124, because earlier Tegra
generations used Cortex-A9 without secure extensions.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Tue, 4 Aug 2015 13:25:03 +0000 (15:25 +0200)]
soc/tegra: pmc: Use existing pclk reference
The driver requests the pclk clock at probe time already and stores its
reference to it in struct tegra_pmc, so there is no need to look it up
everytime it is needed. Use the existing reference instead.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Fri, 3 Jul 2015 09:50:27 +0000 (11:50 +0200)]
soc/tegra: pmc: Remove unnecessary return statement
Functions returning no value don't need an explicit return statement.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Masahiro Yamada [Fri, 31 Jul 2015 05:58:21 +0000 (14:58 +0900)]
soc: tegra: Remove redundant $(CONFIG_ARCH_TEGRA) in Makefile
Kbuild descends into drivers/soc/tegra/ only when CONFIG_ARCH_TEGRA
is enabled. (see drivers/soc/Makefile)
$(CONFIG_ARCH_TEGRA) in drivers/soc/tegra/Makefile always evaluates
to 'y'.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Olof Johansson [Thu, 13 Aug 2015 13:05:06 +0000 (15:05 +0200)]
Merge tag 'qcom-soc-for-4.3' of git://codeaurora.org/quic/kernel/agross-msm into next/drivers
Qualcomm ARM Based SoC Updates for 4.3
* Add SMEM driver
* Add SMD driver
* Add RPM over SMD driver
* Select QCOM_SCM by default
* tag 'qcom-soc-for-4.3' of git://codeaurora.org/quic/kernel/agross-msm:
devicetree: soc: Add Qualcomm SMD based RPM DT binding
soc: qcom: Driver for the Qualcomm RPM over SMD
soc: qcom: Add Shared Memory Driver
soc: qcom: Add device tree binding for Shared Memory Device
drivers: qcom: Select QCOM_SCM unconditionally for QCOM_PM
soc: qcom: Add Shared Memory Manager driver
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Thu, 13 Aug 2015 10:02:07 +0000 (12:02 +0200)]
Merge tag 'mvebu-soc-4.3-2' of git://git.infradead.org/linux-mvebu into next/drivers
mvebu soc changes for v4.3 (part #2)
SoC part of the Dove PMU series
* tag 'mvebu-soc-4.3-2' of git://git.infradead.org/linux-mvebu:
ARM: dove: create a proper PMU driver for power domains, PMU IRQs and resets
Signed-off-by: Olof Johansson <olof@lixom.net>
Geert Uytterhoeven [Tue, 4 Aug 2015 12:28:06 +0000 (14:28 +0200)]
clk: shmobile: rz: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the RZ Clock Pulse Generator (CPG) driver
using the generic PM Domain. This allows to power-manage the module
clocks of SoC devices that are part of the CPG/MSTP Clock Domain using
Runtime PM, or for system suspend/resume.
SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Geert Uytterhoeven [Tue, 4 Aug 2015 12:28:05 +0000 (14:28 +0200)]
clk: shmobile: rcar-gen2: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the R-Car Gen2 Clock Pulse Generator (CPG)
driver using the generic PM Domain. This allows to power-manage the
module clocks of SoC devices that are part of the CPG/MSTP Clock Domain
using Runtime PM, or for system suspend/resume.
SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Geert Uytterhoeven [Tue, 4 Aug 2015 12:28:04 +0000 (14:28 +0200)]
clk: shmobile: r8a7779: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the R-Car H1 Clock Pulse Generator (CPG)
driver using the generic PM Domain. This allows to power-manage the
module clocks of SoC devices that are part of the CPG/MSTP Clock Domain
using Runtime PM, or for system suspend/resume.
SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Also update the reg property in the DT binding doc example to match the
actual dtsi, which uses #address-cells and #size-cells == 1, not 2.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Geert Uytterhoeven [Tue, 4 Aug 2015 12:28:03 +0000 (14:28 +0200)]
clk: shmobile: r8a7778: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the R-Car M1A Clock Pulse Generator (CPG)
driver using the generic PM Domain. This allows to power-manage the
module clocks of SoC devices that are part of the CPG/MSTP Clock Domain
using Runtime PM, or for system suspend/resume.
SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Geert Uytterhoeven [Tue, 4 Aug 2015 12:28:02 +0000 (14:28 +0200)]
clk: shmobile: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the Clock Pulse Generator (CPG) Module Stop
(MSTP) Clocks driver using the generic PM Domain. This allows to
power-manage the module clocks of SoC devices that are part of the
CPG/MSTP Clock Domain using Runtime PM, or for system suspend/resume.
SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a
proper "power-domains" property.
The CPG/MSTP Clock Domain code will scan such devices for clocks that
are suitable for power-managing the device, by looking for a clock that
is compatible with "renesas,cpg-mstp-clocks".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Russell King [Wed, 15 Jul 2015 18:59:36 +0000 (19:59 +0100)]
ARM: dove: create a proper PMU driver for power domains, PMU IRQs and resets
The PMU device contains an interrupt controller, power control and
resets. The interrupt controller is a little sub-standard in that
there is no race free way to clear down pending interrupts, so we try
to avoid problems by reducing the window as much as possible, and
clearing as infrequently as possible.
The interrupt support is implemented using an IRQ domain, and the
parent interrupt referenced in the standard DT way.
The power domains and reset support is closely related - there is a
defined sequence for powering down a domain which is tightly coupled
with asserting the reset. Hence, it makes sense to group these two
together, and in order to avoid any locking contention disrupting this
sequence, we avoid the use of syscon or regmap.
This patch adds the core PMU driver: power domains must be defined in
the DT file in order to make use of them. The reset controller can
be referenced in the standard way for reset controllers.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Moritz Fischer [Fri, 31 Jul 2015 01:13:56 +0000 (18:13 -0700)]
reset: reset-zynq: Adding support for Xilinx Zynq reset controller.
This adds a reset controller driver to control the Xilinx Zynq
AP-SoC's various resets.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Moritz Fischer [Fri, 31 Jul 2015 01:13:54 +0000 (18:13 -0700)]
docs: dts: Added documentation for Xilinx Zynq Reset Controller bindings.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Alban Bedel [Mon, 3 Aug 2015 17:23:53 +0000 (19:23 +0200)]
MIPS: ath79: Add the reset controller to the AR9132 dtsi
Signed-off-by: Alban Bedel <albeu@free.fr>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Alban Bedel [Mon, 3 Aug 2015 17:23:52 +0000 (19:23 +0200)]
reset: Add a driver for the reset controller on the AR71XX/AR9XXX
The AR71XX/AR9XXX SoC have a simple reset controller with one bit per
reset line.
Signed-off-by: Alban Bedel <albeu@free.fr>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Alban Bedel [Mon, 3 Aug 2015 17:23:51 +0000 (19:23 +0200)]
devicetree: Add bindings for the ATH79 reset controller
Signed-off-by: Alban Bedel <albeu@free.fr>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Dinh Nguyen [Fri, 31 Jul 2015 21:03:10 +0000 (16:03 -0500)]
reset: socfpga: Update reset-socfpga to read the altr,modrst-offset property
In order for the Arria10 to be able to re-use the reset driver for SoCFPGA
Cyclone5/Arria5, we need to read the 'altr,modrst-offset' property from the
device tree entry. The 'altr,modrst-offset' property is the first register
into the reset manager that is used for bringing peripherals out of reset.
The driver assumes a modrst-offset of 0x10 in order to support legacy
Cyclone5/Arria5 hardware.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Joachim Eastwood [Tue, 5 May 2015 22:10:27 +0000 (00:10 +0200)]
doc: dt: add documentation for lpc1850-rgu reset driver
Add device tree binding documentation for the Reset Generation Unit
(RGU) found on NXP LPC18xx and LPC43xx devies.
This documentation also includes a table which shows the RGU reset
number and the connected peripheral.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Joachim Eastwood [Tue, 5 May 2015 22:10:26 +0000 (00:10 +0200)]
reset: add driver for lpc18xx rgu
Add reset driver for the Reset Generation Unit (RGU) found on NXP
LPC18xx and LPC43xx devies. This reset controller features up to 64
reset lines connected to different blocks and peripheral in the SoC.
Most reset lines on the controller are self clearing except for
those dealing with the Cortex-M0 cores on LPC43xx devices.
This driver also registers a restart handler that can be used to
reset the entire device.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Fabian Frederick [Mon, 16 Mar 2015 19:54:37 +0000 (20:54 +0100)]
reset: sti: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Philipp Zabel [Fri, 13 Feb 2015 11:20:49 +0000 (12:20 +0100)]
ARM: STi: DT: Move reset controller constants into common location
By popular vote, the DT binding includes for reset controllers are located
in include/dt-bindings/reset/. Move the STi reset constants in there, too,
to avoid confusion.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Philipp Zabel [Fri, 13 Feb 2015 11:14:40 +0000 (12:14 +0100)]
MAINTAINERS: add include/dt-bindings/reset path to reset controller entry
This is the path for reset definitions to be used in both device tree and
reset controller drivers.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Bjorn Andersson [Tue, 28 Jul 2015 03:20:31 +0000 (20:20 -0700)]
devicetree: soc: Add Qualcomm SMD based RPM DT binding
Add binding documentation for the Qualcomm Resource Power Manager (RPM)
using shared memory (Qualcomm SMD) as transport mechanism. This is found
in 8974 and newer based devices.
The binding currently describes the rpm itself and the regulator
subnodes.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Bjorn Andersson [Tue, 28 Jul 2015 03:20:32 +0000 (20:20 -0700)]
soc: qcom: Driver for the Qualcomm RPM over SMD
Driver for the Resource Power Manager (RPM) found in Qualcomm 8974 based
devices.
The driver exposes resources that child drivers can operate on; to
implementing regulator, clock and bus frequency drivers.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Bjorn Andersson [Tue, 28 Jul 2015 03:20:30 +0000 (20:20 -0700)]
soc: qcom: Add Shared Memory Driver
This adds the Qualcomm Shared Memory Driver (SMD) providing
communication channels to remote processors, ontop of SMEM.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Bjorn Andersson [Tue, 28 Jul 2015 03:20:29 +0000 (20:20 -0700)]
soc: qcom: Add device tree binding for Shared Memory Device
Add device tree binding documentation for the Qualcomm Shared Memory
Device, used for communication between the various CPUs in the Qualcomm
SoCs.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Lina Iyer [Fri, 10 Jul 2015 20:18:00 +0000 (14:18 -0600)]
drivers: qcom: Select QCOM_SCM unconditionally for QCOM_PM
Enable QCOM_SCM for QCOM power management driver
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Bjorn Andersson [Fri, 26 Jun 2015 21:50:10 +0000 (14:50 -0700)]
soc: qcom: Add Shared Memory Manager driver
The Shared Memory Manager driver implements an interface for allocating
and accessing items in the memory area shared among all of the
processors in a Qualcomm platform.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Acked-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Gregory CLEMENT [Fri, 3 Jul 2015 11:55:53 +0000 (13:55 +0200)]
ARM: mvebu: Warn about the wake-up sources not taken into account in suspend
On the Armada 370/XP/38x/39x SoCs when the suspend to ram feature is
supported, the SoCs are shutdown and will be woken up by an external
micro-controller, so there is no possibility to setup wake-up sources
from Linux. However, in standby mode, the SoCs stay powered and it is
possible to wake-up from any interrupt sources. Since when the users
configures the enabled wake-up sources there is no way to know if the
user will be doing suspend to RAM or standby, we just allow all
wake-up sources to be enabled, and only warn when entering suspend to
RAM
The purpose of this patch is to inform the user that in suspend to ram
mode, the wake-up sources won't be taken into consideration.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Gregory CLEMENT [Fri, 3 Jul 2015 11:55:51 +0000 (13:55 +0200)]
ARM: mvebu: Add standby support
Until now only one Armada XP and one Armada 388 based board supported
suspend to ram. However, most of the recent mvebu SoCs can support the
standby mode. Unlike for the suspend to ram, nothing special has to be
done for these SoCs. This patch allows the system to use the standby
mode on Armada 370, 38x, 39x and XP SoCs. There are issues with the
Armada 375, and the support might be added (if possible) in a future
patch.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Gregory CLEMENT [Fri, 3 Jul 2015 11:55:50 +0000 (13:55 +0200)]
ARM: mvebu: Use __init for the PM initialization functions
mvebu_pm_init and mvebu_armada_pm_init are only called during boot, so
flag them with __init and save some memory.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Thomas Petazzoni [Wed, 8 Jul 2015 15:02:33 +0000 (17:02 +0200)]
ARM: mvebu: prepare pm-board.c for the introduction of Armada 38x support
The pm-board.c code contains the board-specific logic to enter suspend
to RAM. Until now, the code supported only the Armada XP GP board, so
all functions and symbols were named with armada_xp_gp. However, it
turns out that the Armada 388 GP also uses the same 3 GPIOs protocol
to talk to the PIC microcontroller that controls the power supply.
Since we are going to re-use the same code with no change for Armada
38x, this commit renames the functions and symbols to use just
"armada" instead of "armada_xp_gp". Better names can be found if one
day other boards having a different protocol/mechanism are supported
in the kernel.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Thomas Petazzoni [Wed, 8 Jul 2015 15:02:32 +0000 (17:02 +0200)]
ARM: mvebu: prepare mvebu_pm_store_bootinfo() to support multiple SoCs
As we are going to introduce support for Armada 38x in pm.c, split out
the Armada XP part of mvebu_pm_store_bootinfo() into
mvebu_pm_store_armadaxp_bootinfo(), and make the former retunr an
error when an unsupported SoC is used.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Thomas Petazzoni [Wed, 8 Jul 2015 15:02:31 +0000 (17:02 +0200)]
ARM: mvebu: do not check machine in mvebu_pm_init()
The mvebu_pm_init() initializes the support for suspend/resume, and
before doing that, it checks if we are on a board on which
suspend/resume is actually supported. However, this check is already
done by mvebu_armada_xp_gp_pm_init(), and there is no need to
duplicate the check: callers of mvebu_pm_init() should now what they
are doing.
This commit is done in preparation to the addition of suspend/resume
support on Armada 38x.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Nadav Haklai [Wed, 8 Jul 2015 15:02:30 +0000 (17:02 +0200)]
ARM: mvebu: prepare set_cpu_coherent() for future extension
This patch prepares the set_cpu_coherent() function in coherency.c to
be extended to support other SoCs than Armada XP. It will be needed on
Armada 38x to re-enable the coherency after exiting from suspend to
RAM.
This preparation simply moves the function further down in coherency.c
so that it can use coherency_type(), and uses that function to only do
the Armada XP specific work if we are on Armada XP.
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Joachim Eastwood [Wed, 22 Jul 2015 22:10:37 +0000 (00:10 +0200)]
memory: pl172: fix modular build
Building pl172 as a module fails with:
> ERROR: "of_default_bus_match_table" [drivers/memory/pl172.ko] undefined!
Because the symbol of_default_bus_match_table isn't exported by the OF
core code so can't be referenced from modules. Fix this by removing
the usage of of_default_bus_match_table for now. The side effect of
this is that child nodes can't use "simple-bus" or "simple-mfd".
Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Joachim Eastwood [Mon, 13 Jul 2015 21:20:12 +0000 (23:20 +0200)]
doc: dt: add documentation for pl172 memory bindings
Add documentation for configuration and timing setup of
static memory devices on the ARM PL172 controller.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Joachim Eastwood [Mon, 13 Jul 2015 21:20:11 +0000 (23:20 +0200)]
memory: add ARM PL172 MultiPort Memory Controller driver
This driver makes it possible to configure the static memory
chip selects on the ARM PL172 MultiPort Memory Controller
from a set of properties in DT. Configuration of dynamic
memory is not supported and is left to the boot loader.
The intended usage is to setup timing and configuration for
static memory devices like NAND and NOR Flash before they
are probed by a driver.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Thierry Reding [Mon, 4 May 2015 14:45:25 +0000 (16:45 +0200)]
soc/tegra: fuse: Add spare bit offset for Tegra210
The offset of the first spare bit register on Tegra210 is 0x380, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 4 May 2015 14:44:29 +0000 (16:44 +0200)]
soc/tegra: fuse: Add spare bit offset for Tegra124
The offset of the first spare bit register on Tegra124 is 0x300, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 4 May 2015 14:38:28 +0000 (16:38 +0200)]
soc/tegra: fuse: Add spare bit offset for Tegra114
The offset of the first spare bit register on Tegra114 is 0x280, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 23 Mar 2015 13:44:08 +0000 (14:44 +0100)]
soc/tegra: fuse: Rename core_* to soc_*
There's a mixture of core_* and soc_* prefixes for variables storing
information related to the VDD_CORE rail. Choose one (soc_*) and use it
more consistently.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Wed, 29 Apr 2015 14:55:57 +0000 (16:55 +0200)]
soc/tegra: fuse: Add Tegra210 support
Add Tegra210 support to the fuses driver and add Tegra210-specific
speedo definitions.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Wed, 29 Apr 2015 14:54:04 +0000 (16:54 +0200)]
soc/tegra: fuse: Unify Tegra20 and Tegra30 drivers
Unifying the drivers makes it easier to restrict the legacy probing
paths to 32-bit ARM. This in turn will come in handy as support for
new 64-bit ARM SoCs is added.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 4 May 2015 11:30:50 +0000 (13:30 +0200)]
soc/tegra: fuse: Restrict legacy code to 32-bit ARM
For backwards-compatibility with old device trees, if no APBMISC node
exists this driver hard-codes the I/O memory region. All 64-bit ARM
device tree files are recent enough that they can be required to have
this node, and therefore the legacy code path is not required.
Based on work done by Paul Walmsley <pwalmsley@nvidia.com>.
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 23 Mar 2015 10:31:29 +0000 (11:31 +0100)]
soc/tegra: pmc: Add Tegra210 support
Tegra210 uses a power management controller that is compatible with
earlier SoC generations but adds a couple of power partitions for new
hardware blocks.
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Wed, 29 Apr 2015 10:42:28 +0000 (12:42 +0200)]
soc/tegra: pmc: Restrict legacy code to 32-bit ARM
For backwards-compatibility with old device trees, if no PMC node exists
this driver hard-codes the I/O memory region. All 64-bit ARM device tree
files are recent enough that they can be required to have this node, and
therefore the legacy code path is not required on 64-bit ARM.
Based on work done by Paul Walmsley <pwalmsley@nvidia.com>.
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Thu, 9 Jul 2015 07:59:55 +0000 (09:59 +0200)]
soc/tegra: pmc: Avoid usage of uninitialized variable
Make sure to only drop the reference to the OF node after it's been
successfully obtained.
Fixes:
3568df3d31d6 ("soc: tegra: Add thermal reset (thermtrip) support to PMC")
Cc: <stable@vger.kernel.org> # v4.0+
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 23 Mar 2015 10:29:25 +0000 (11:29 +0100)]
soc/tegra: Add Tegra210 support
Add Tegra210 to the matching table for NVIDIA Tegra SoCs.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Thierry Reding [Mon, 23 Mar 2015 10:28:53 +0000 (11:28 +0100)]
soc/tegra: Add Tegra132 support
Add Tegra132 to the matching table for NVIDIA Tegra SoCs.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tuomas Tynkkynen [Wed, 13 May 2015 14:58:48 +0000 (17:58 +0300)]
cpufreq: Add cpufreq driver for Tegra124
Add a new cpufreq driver for Tegra124. Instead of using the PLLX as
the CPU clocksource, switch immediately to the DFLL. It allows the use
of higher clock rates, and will automatically scale the CPU voltage as
well. Besides the CPU clocksource switch, we let the cpufreq-dt driver
for all the cpufreq operations.
This driver also relies on the DFLL driver to fill the OPP table for the
CPU0 device, so that the cpufreq-dt driver knows what frequencies to
use.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tuomas Tynkkynen [Wed, 13 May 2015 14:58:47 +0000 (17:58 +0300)]
cpufreq: tegra: Rename tegra-cpufreq to tegra20-cpufreq
The Tegra124 will use a different driver for frequency scaling, so
rename the old driver (which handles only Tegra20) appropriately.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tuomas Tynkkynen [Wed, 13 May 2015 14:58:46 +0000 (17:58 +0300)]
cpufreq: tegra124: Add device tree bindings
The cpufreq driver for Tegra124 will be a different one than the old
Tegra20 cpufreq driver (tegra-cpufreq), which does not use the device
tree.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Linus Torvalds [Sun, 12 Jul 2015 22:10:30 +0000 (15:10 -0700)]
Linux 4.2-rc2
Linus Torvalds [Sun, 12 Jul 2015 22:00:20 +0000 (15:00 -0700)]
Revert "drm/i915: Use crtc_state->active in primary check_plane func"
This reverts commit
dec4f799d0a4c9edae20512fa60b0a36f3299ca2.
Jörg Otte reports a NULL pointder dereference due to this commit, as
'crtc_state' very much can be NULL:
crtc_state = state->base.state ?
intel_atomic_get_crtc_state(state->base.state, intel_crtc) : NULL;
So the change to test 'crtc_state->base.active' cannot possibly be
correct as-is.
There may be some other minimal fix (like just checking crtc_state for
NULL), but I'm just reverting it now for the rc2 release, and people
like Daniel Vetter who actually know this code will figure out what the
right solution is in the longer term.
Reported-and-bisected-by: Jörg Otte <jrg.otte@gmail.com>
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
CC: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 12 Jul 2015 21:09:36 +0000 (14:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
"Fixes for this cycle regression in overlayfs and a couple of
long-standing (== all the way back to 2.6.12, at least) bugs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
freeing unlinked file indefinitely delayed
fix a braino in ovl_d_select_inode()
9p: don't leave a half-initialized inode sitting around
Linus Torvalds [Sun, 12 Jul 2015 20:55:24 +0000 (13:55 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"A fair number of 4.2 fixes also because Markos opened the flood gates.
- Patch up the math used calculate the location for the page bitmap.
- The FDC (Not what you think, FDC stands for Fast Debug Channel) IRQ
around was causing issues on non-Malta platforms, so move the code
to a Malta specific location.
- A spelling fix replicated through several files.
- Fix to the emulation of an R2 instruction for R6 cores.
- Fix the JR emulation for R6.
- Further patching of mindless 64 bit issues.
- Ensure the kernel won't crash on CPUs with L2 caches with >= 8
ways.
- Use compat_sys_getsockopt for O32 ABI on 64 bit kernels.
- Fix cache flushing for multithreaded cores.
- A build fix"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: O32: Use compat_sys_getsockopt.
MIPS: c-r4k: Extend way_string array
MIPS: Pistachio: Support CDMM & Fast Debug Channel
MIPS: Malta: Make GIC FDC IRQ workaround Malta specific
MIPS: c-r4k: Fix cache flushing for MT cores
Revert "MIPS: Kconfig: Disable SMP/CPS for 64-bit"
MIPS: cps-vec: Use macros for various arithmetics and memory operations
MIPS: kernel: cps-vec: Replace KSEG0 with CKSEG0
MIPS: kernel: cps-vec: Use ta0-ta3 pseudo-registers for 64-bit
MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2
MIPS: kernel: cps-vec: Replace 'la' macro with PTR_LA
MIPS: kernel: smp-cps: Fix 64-bit compatibility errors due to pointer casting
MIPS: Fix erroneous JR emulation for MIPS R6
MIPS: Fix branch emulation for BLTC and BGEC instructions
MIPS: kernel: traps: Fix broken indentation
MIPS: bootmem: Don't use memory holes for page bitmap
MIPS: O32: Do not handle require 32 bytes from the stack to be readable.
MIPS, CPUFREQ: Fix spelling of Institute.
MIPS: Lemote 2F: Fix build caused by recent mass rename.
Linus Torvalds [Sun, 12 Jul 2015 17:02:38 +0000 (10:02 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- the high latency PIT detection fix, which slipped through the cracks
for rc1
- a regression fix for the early printk mechanism
- the x86 part to plug irq/vector related hotplug races
- move the allocation of the espfix pages on cpu hotplug to non atomic
context. The current code triggers a might_sleep() warning.
- a series of KASAN fixes addressing boot crashes and usability
- a trivial typo fix for Kconfig help text
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kconfig: Fix typo in the CONFIG_CMDLINE_BOOL help text
x86/irq: Retrieve irq data after locking irq_desc
x86/irq: Use proper locking in check_irq_vectors_for_cpu_disable()
x86/irq: Plug irq vector hotplug race
x86/earlyprintk: Allow early_printk() to use console style parameters like '115200n8'
x86/espfix: Init espfix on the boot CPU side
x86/espfix: Add 'cpu' parameter to init_espfix_ap()
x86/kasan: Move KASAN_SHADOW_OFFSET to the arch Kconfig
x86/kasan: Add message about KASAN being initialized
x86/kasan: Fix boot crash on AMD processors
x86/kasan: Flush TLBs after switching CR3
x86/kasan: Fix KASAN shadow region page tables
x86/init: Clear 'init_level4_pgt' earlier
x86/tsc: Let high latency PIT fail fast in quick_pit_calibrate()
Linus Torvalds [Sun, 12 Jul 2015 16:36:59 +0000 (09:36 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"This update from the timer departement contains:
- A series of patches which address a shortcoming in the tick
broadcast code.
If the broadcast device is not available or an hrtimer emulated
broadcast device, some of the original assumptions lead to boot
failures. I rather plugged all of the corner cases instead of only
addressing the issue reported, so the change got a little larger.
Has been extensivly tested on x86 and arm.
- Get rid of the last holdouts using do_posix_clock_monotonic_gettime()
- A regression fix for the imx clocksource driver
- An update to the new state callbacks mechanism for clockevents.
This is required to simplify the conversion, which will take place
in 4.3"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/broadcast: Prevent NULL pointer dereference
time: Get rid of do_posix_clock_monotonic_gettime
cris: Replace do_posix_clock_monotonic_gettime()
tick/broadcast: Unbreak CONFIG_GENERIC_CLOCKEVENTS=n build
tick/broadcast: Handle spurious interrupts gracefully
tick/broadcast: Check for hrtimer broadcast active early
tick/broadcast: Return busy when IPI is pending
tick/broadcast: Return busy if periodic mode and hrtimer broadcast
tick/broadcast: Move the check for periodic mode inside state handling
tick/broadcast: Prevent deep idle if no broadcast device available
tick/broadcast: Make idle check independent from mode and config
tick/broadcast: Sanity check the shutdown of the local clock_event
tick/broadcast: Prevent hrtimer recursion
clockevents: Allow set-state callbacks to be optional
clocksource/imx: Define clocksource for mx27
Linus Torvalds [Sun, 12 Jul 2015 16:15:02 +0000 (09:15 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single fix for a cpu hotplug race vs. interrupt descriptors:
Prevent irq setup/teardown across the cpu starting/dying parts of cpu
hotplug so that the starting/dying cpu has a stable view of the
descriptor space. This has been an issue for all architectures in the
cpu dying phase, where interrupts are migrated away from the dying
cpu. In the starting phase its mostly a x86 issue vs the vector space
update"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hotplug: Prevent alloc/free of irq descriptors during cpu up/down
Al Viro [Wed, 8 Jul 2015 01:42:38 +0000 (02:42 +0100)]
freeing unlinked file indefinitely delayed
Normally opening a file, unlinking it and then closing will have
the inode freed upon close() (provided that it's not otherwise busy and
has no remaining links, of course). However, there's one case where that
does *not* happen. Namely, if you open it by fhandle with cold dcache,
then unlink() and close().
In normal case you get d_delete() in unlink(2) notice that dentry
is busy and unhash it; on the final dput() it will be forcibly evicted from
dcache, triggering iput() and inode removal. In this case, though, we end
up with *two* dentries - disconnected (created by open-by-fhandle) and
regular one (used by unlink()). The latter will have its reference to inode
dropped just fine, but the former will not - it's considered hashed (it
is on the ->s_anon list), so it will stay around until the memory pressure
will finally do it in. As the result, we have the final iput() delayed
indefinitely. It's trivial to reproduce -
void flush_dcache(void)
{
system("mount -o remount,rw /");
}
static char buf[20 * 1024 * 1024];
main()
{
int fd;
union {
struct file_handle f;
char buf[MAX_HANDLE_SZ];
} x;
int m;
x.f.handle_bytes = sizeof(x);
chdir("/root");
mkdir("foo", 0700);
fd = open("foo/bar", O_CREAT | O_RDWR, 0600);
close(fd);
name_to_handle_at(AT_FDCWD, "foo/bar", &x.f, &m, 0);
flush_dcache();
fd = open_by_handle_at(AT_FDCWD, &x.f, O_RDWR);
unlink("foo/bar");
write(fd, buf, sizeof(buf));
system("df ."); /* 20Mb eaten */
close(fd);
system("df ."); /* should've freed those 20Mb */
flush_dcache();
system("df ."); /* should be the same as #2 */
}
will spit out something like
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 283282 21692 93% /
- inode gets freed only when dentry is finally evicted (here we trigger
than by remount; normally it would've happened in response to memory
pressure hell knows when).
Cc: stable@vger.kernel.org # v2.6.38+; earlier ones need s/kill_it/unhash_it/
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 12 Jul 2015 14:39:45 +0000 (10:39 -0400)]
fix a braino in ovl_d_select_inode()
when opening a directory we want the overlayfs inode, not one from
the topmost layer.
Reported-By: Andrey Jr. Melnikov <temnota.am@gmail.com>
Tested-By: Andrey Jr. Melnikov <temnota.am@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 12 Jul 2015 14:34:29 +0000 (10:34 -0400)]
9p: don't leave a half-initialized inode sitting around
Cc: stable@vger.kernel.org # all branches
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sun, 12 Jul 2015 03:44:31 +0000 (20:44 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/djbw/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1) Fixes for a handful of smatch reports (Thanks Dan C.!) and minor
bug fixes (patches 1-6)
2) Correctness fixes to the BLK-mode nvdimm driver (patches 7-10).
Granted these are slightly large for a -rc update. They have been
out for review in one form or another since the end of May and were
deferred from the merge window while we settled on the "PMEM API"
for the PMEM-mode nvdimm driver (ie memremap_pmem, memcpy_to_pmem,
and wmb_pmem).
Now that those apis are merged we implement them in the BLK driver
to guarantee that mmio aperture moves stay ordered with respect to
incoming read/write requests, and that writes are flushed through
those mmio-windows and platform-buffers to be persistent on media.
These pass the sub-system unit tests with the updates to
tools/testing/nvdimm, and have received a successful build-report from
the kbuild robot (468 configs).
With acks from Rafael for the touches to drivers/acpi/"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm:
nfit: add support for NVDIMM "latch" flag
nfit: update block I/O path to use PMEM API
tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test
tools/testing/nvdimm: fix return code for unimplemented commands
tools/testing/nvdimm: mock ioremap_wt
pmem: add maintainer for include/linux/pmem.h
nfit: fix smatch "use after null check" report
nvdimm: Fix return value of nvdimm_bus_init() if class_create() fails
libnvdimm: smatch cleanups in __nd_ioctl
sparse: fix misplaced __pmem definition
Linus Torvalds [Sat, 11 Jul 2015 18:24:15 +0000 (11:24 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Mostly slight adjusments for new drivers, but also one core fix for
which finally the dependencies are now available as well"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: Mark instantiated device nodes with OF_POPULATE
i2c: jz4780: Fix return value if probe fails
i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error path
i2c: I2C_MT65XX should depend on HAS_DMA
Linus Torvalds [Sat, 11 Jul 2015 18:16:04 +0000 (11:16 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"A fix (revert) for a recent regression in Synaptics driver and a fix
for Elan i2c touchpad driver"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Revert "Input: synaptics - allocate 3 slots to keep stability in image sensors"
Input: elan_i2c - change the hover event from MT to ST
Linus Torvalds [Sat, 11 Jul 2015 18:08:21 +0000 (11:08 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small set of fixes for problems found by smatch in new drivers that
we added this rc and a handful of driver fixes that came in during the
merge window"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
drivers: clk: st: Incorrect register offset used for lock_status
clk: mediatek: mt8173: Fix enabling of critical clocks
drivers: clk: st: Fix mux bit-setting for Cortex A9 clocks
drivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks
drivers: clk: st: Fix flexgen lock init
drivers: clk: st: Fix FSYN channel values
drivers: clk: st: Remove unused code
clk: qcom: Use parent rate when set rate to pixel RCG clock
clk: at91: do not leak resources
clk: stm32: Fix out-by-one error path in the index lookup
clk: iproc: fix bit manipulation arithmetic
clk: iproc: fix memory leak from clock name
Linus Torvalds [Sat, 11 Jul 2015 18:02:51 +0000 (11:02 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A bunch of fixes for radeon, intel, omap and one amdkfd fix.
Radeon fixes are all over, but it does fix some cursor corruption
across suspend/resume. i915 should fix the second warn you were
seeing, so let us know if not. omap is a bunch of small fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
drm/radeon: disable vce init on cayman (v2)
drm/amdgpu: fix timeout calculation
drm/radeon: check if BO_VA is set before adding it to the invalidation list
drm/radeon: allways add the VM clear duplicate
Revert "Revert "drm/radeon: dont switch vt on suspend""
drm/radeon: Fold radeon_set_cursor() into radeon_show_cursor()
drm/radeon: unpin cursor BOs on suspend and pin them again on resume (v2)
drm/radeon: Clean up reference counting and pinning of the cursor BOs
drm/amdkfd: validate pdd where it acquired first
Revert "drm/i915: Allocate context objects from stolen"
drm/i915: Declare the swizzling unknown for L-shaped configurations
drm/radeon: fix underflow in r600_cp_dispatch_texture()
drm/radeon: default to 2048 MB GART size on SI+
drm/radeon: fix HDP flushing
drm/radeon: use RCU query for GEM_BUSY syscall
drm/amdgpu: Handle irqs only based on irq ring, not irq status regs.
drm/radeon: Handle irqs only based on irq ring, not irq status regs.
drm/i915: Use crtc_state->active in primary check_plane func
drm/i915: Check crtc->active in intel_crtc_disable_planes
drm/i915: Restore all GGTT VMAs on resume
...
Linus Torvalds [Sat, 11 Jul 2015 17:38:10 +0000 (10:38 -0700)]
Merge branch 'for-linus2' of git://git./linux/kernel/git/jmorris/linux-security
Pull selinux fixes from James Morris.
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix mprotect PROT_EXEC regression caused by mm change
selinux: don't waste ebitmap space when importing NetLabel categories
Linus Torvalds [Sat, 11 Jul 2015 17:26:34 +0000 (10:26 -0700)]
Merge branch 'for-linus-4.2' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"This is an assortment of fixes. Most of the commits are from Filipe
(fsync, the inode allocation cache and a few others). Mark kicked in
a series fixing corners in the extent sharing ioctls, and everyone
else fixed up on assorted other problems"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix wrong check for btrfs_force_chunk_alloc()
Btrfs: fix warning of bytes_may_use
Btrfs: fix hang when failing to submit bio of directIO
Btrfs: fix a comment in inode.c:evict_inode_truncate_pages()
Btrfs: fix memory corruption on failure to submit bio for direct IO
btrfs: don't update mtime/ctime on deduped inodes
btrfs: allow dedupe of same inode
btrfs: fix deadlock with extent-same and readpage
btrfs: pass unaligned length to btrfs_cmp_data()
Btrfs: fix fsync after truncate when no_holes feature is enabled
Btrfs: fix fsync xattr loss in the fast fsync path
Btrfs: fix fsync data loss after append write
Btrfs: fix crash on close_ctree() if cleaner starts new transaction
Btrfs: fix race between caching kthread and returning inode to inode cache
Btrfs: use kmem_cache_free when freeing entry in inode cache
Btrfs: fix race between balance and unused block group deletion
btrfs: add error handling for scrub_workers_get()
btrfs: cleanup noused initialization of dev in btrfs_end_bio()
btrfs: qgroup: allow user to clear the limitation on qgroup
Linus Torvalds [Sat, 11 Jul 2015 17:20:36 +0000 (10:20 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Kevin Hilman:
"A fairly random colletion of fixes based on -rc1 for OMAP, sunxi and
prima2 as well as a few arm64-specific DT fixes.
This series also includes a late to support a new Allwinner (sunxi)
SoC, but since it's rather simple and isolated to the
platform-specific code, it's included it for this -rc"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: dts: add device tree for ARM SMM-A53x2 on LogicTile Express 20MG
arm: dts: vexpress: add missing CCI PMU device node to TC2
arm: dts: vexpress: describe all PMUs in TC2 dts
GICv3: Add ITS entry to THUNDER dts
arm64: dts: Add poweroff button device node for APM X-Gene platform
ARM: dts: am4372.dtsi: disable rfbi
ARM: dts: am57xx-beagle-x15: Provide supply for usb2_phy2
ARM: dts: am4372: Add emif node
Revert "ARM: dts: am335x-boneblack: disable RTC-only sleep"
ARM: sunxi: Enable simplefb in the defconfig
ARM: Remove deprecated symbol from defconfig files
ARM: sunxi: Add Machine support for A33
ARM: sunxi: Introduce Allwinner H3 support
Documentation: sunxi: Update Allwinner SoC documentation
ARM: prima2: move to use REGMAP APIs for rtciobrg
ARM: dts: atlas7: add pinctrl and gpio descriptions
ARM: OMAP2+: Remove unnessary return statement from the void function, omap2_show_dma_caps
memory: omap-gpmc: Fix parsing of devices
Thomas Gleixner [Sat, 11 Jul 2015 12:26:34 +0000 (14:26 +0200)]
tick/broadcast: Prevent NULL pointer dereference
Dan reported that the recent changes to the broadcast code introduced
a potential NULL dereference.
Add the proper check.
Fixes:
e0454311903d "tick/broadcast: Sanity check the shutdown of the local clock_event"
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Linus Torvalds [Fri, 10 Jul 2015 23:54:37 +0000 (16:54 -0700)]
Merge branch 'parisc-4.2-1' of git://git./linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"We have one important patch from Dave Anglin and myself which fixes
PTE/TLB race conditions which caused random segmentation faults on our
debian buildd servers, and one patch from Alex Ivanov which speeds up
the graphical text console on the STI framebuffer driver"
* 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
stifb: Implement hardware accelerated copyarea
James Morris [Fri, 10 Jul 2015 23:13:45 +0000 (09:13 +1000)]
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/selinux into for-linus2
Stephen Smalley [Fri, 10 Jul 2015 13:40:59 +0000 (09:40 -0400)]
selinux: fix mprotect PROT_EXEC regression caused by mm change
commit
66fc13039422ba7df2d01a8ee0873e4ef965b50b ("mm: shmem_zero_setup
skip security check and lockdep conflict with XFS") caused a regression
for SELinux by disabling any SELinux checking of mprotect PROT_EXEC on
shared anonymous mappings. However, even before that regression, the
checking on such mprotect PROT_EXEC calls was inconsistent with the
checking on a mmap PROT_EXEC call for a shared anonymous mapping. On a
mmap, the security hook is passed a NULL file and knows it is dealing
with an anonymous mapping and therefore applies an execmem check and no
file checks. On a mprotect, the security hook is passed a vma with a
non-NULL vm_file (as this was set from the internally-created shmem
file during mmap) and therefore applies the file-based execute check
and no execmem check. Since the aforementioned commit now marks the
shmem zero inode with the S_PRIVATE flag, the file checks are disabled
and we have no checking at all on mprotect PROT_EXEC. Add a test to
the mprotect hook logic for such private inodes, and apply an execmem
check in that case. This makes the mmap and mprotect checking
consistent for shared anonymous mappings, as well as for /dev/zero and
ashmem.
Cc: <stable@vger.kernel.org> # 4.1.x
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Linus Torvalds [Fri, 10 Jul 2015 19:49:56 +0000 (12:49 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes and clean-up from Catalin Marinas:
- ACPI fix when checking the validity of the GICC MADT subtable
- handle debug exceptions in the el*_inv exception entries
- remove pointless register assignment in two compat syscall wrappers
- unnecessary include path
- defconfig update
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: entry32: remove pointless register assignment
arm64: entry: handle debug exceptions in el*_inv
arm64: Keep the ARM64 Kconfig selects sorted
ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY macro
ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro
arm64: defconfig: Add Ceva ahci to the defconfig
arm64: remove another unnecessary libfdt include path
John David Anglin [Wed, 1 Jul 2015 21:18:37 +0000 (17:18 -0400)]
parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
The increased use of pdtlb/pitlb instructions seemed to increase the
frequency of random segmentation faults building packages. Further, we
had a number of cases where TLB inserts would repeatedly fail and all
forward progress would stop. The Haskell ghc package caused a lot of
trouble in this area. The final indication of a race in pte handling was
this syslog entry on sibaris (C8000):
swap_free: Unused swap offset entry
00000004
BUG: Bad page map in process mysqld pte:
00000100 pmd:
019bbec5
addr:
00000000ec464000 vm_flags:
00100073 anon_vma:
0000000221023828 mapping: (null) index:ec464
CPU: 1 PID: 9176 Comm: mysqld Not tainted 4.0.0-2-parisc64-smp #1 Debian 4.0.5-1
Backtrace:
[<
0000000040173eb0>] show_stack+0x20/0x38
[<
0000000040444424>] dump_stack+0x9c/0x110
[<
00000000402a0d38>] print_bad_pte+0x1a8/0x278
[<
00000000402a28b8>] unmap_single_vma+0x3d8/0x770
[<
00000000402a4090>] zap_page_range+0xf0/0x198
[<
00000000402ba2a4>] SyS_madvise+0x404/0x8c0
Note that the pte value is 0 except for the accessed bit 0x100. This bit
shouldn't be set without the present bit.
It should be noted that the madvise system call is probably a trigger for many
of the random segmentation faults.
In looking at the kernel code, I found the following problems:
1) The pte_clear define didn't take TLB lock when clearing a pte.
2) We didn't test pte present bit inside lock in exception support.
3) The pte and tlb locks needed to merged in order to ensure consistency
between page table and TLB. This also has the effect of serializing TLB
broadcasts on SMP systems.
The attached change implements the above and a few other tweaks to try
to improve performance. Based on the timing code, TLB purges are very
slow (e.g., ~ 209 cycles per page on rp3440). Thus, I think it
beneficial to test the split_tlb variable to avoid duplicate purges.
Probably, all PA 2.0 machines have combined TLBs.
I dropped using __flush_tlb_range in flush_tlb_mm as I realized all
applications and most threads have a stack size that is too large to
make this useful. I added some comments to this effect.
Since implementing 1 through 3, I haven't had any random segmentation
faults on mx3210 (rp3440) in about one week of building code and running
as a Debian buildd.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Helge Deller <deller@gmx.de>
Alex Ivanov [Mon, 15 Jun 2015 05:50:45 +0000 (08:50 +0300)]
stifb: Implement hardware accelerated copyarea
This patch adds hardware assisted scrolling. The code is based upon the
following investigation: https://parisc.wiki.kernel.org/index.php/NGLE#Blitter
A simple 'time ls -la /usr/bin' test shows 1.6x speed increase over soft
copy and 2.3x increase over FBINFO_READS_FAST (prefer soft copy over
screen redraw) on Artist framebuffer.
Signed-off-by: Alex Ivanov <lausgans@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Linus Torvalds [Fri, 10 Jul 2015 19:16:59 +0000 (12:16 -0700)]
Merge tag 'powerpc-4.2-2' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- opal-prd mmap fix from Vaidy
- set kernel taint for MCEs from Daniel
- alignment exception description from Anton
- ppc4xx_hsta_msi build fix from Daniel
- opal-elog interrupt fix from Alistair
- core_idle_state race fix from Shreyas
- hv-24x7 lockdep fix from Sukadev
- multiple cxl fixes from Daniel, Ian, Mikey & Maninder
- update MAINTAINERS to point at shared tree
* tag 'powerpc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
cxl: Check if afu is not null in cxl_slbia
powerpc: Update MAINTAINERS to point at shared tree
powerpc/perf/24x7: Fix lockdep warning
cxl: Fix off by one error allowing subsequent mmap page to be accessed
cxl: Fail mmap if requested mapping is larger than assigned problem state area
cxl: Fix refcounting in kernel API
powerpc/powernv: Fix race in updating core_idle_state
powerpc/powernv: Fix opal-elog interrupt handler
powerpc/ppc4xx_hsta_msi: Include ppc-pci.h to fix reference to hose_list
powerpc: Add plain English description for alignment exception oopses
cxl: Test the correct mmio space before unmapping
powerpc: Set the correct kernel taint on machine check errors
cxl/vphb.c: Use phb pointer after NULL check
powerpc/powernv: Fix vma page prot flags in opal-prd driver
Ross Zwisler [Fri, 10 Jul 2015 17:06:14 +0000 (11:06 -0600)]
nfit: add support for NVDIMM "latch" flag
Add support in the NFIT BLK I/O path for the "latch" flag
defined in the "Get Block NVDIMM Flags" _DSM function:
http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
This flag requires the driver to read back the command register after it
is written in the block I/O path. This ensures that the hardware has
fully processed the new command and moved the aperture appropriately.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross Zwisler [Fri, 10 Jul 2015 17:06:13 +0000 (11:06 -0600)]
nfit: update block I/O path to use PMEM API
Update the nfit block I/O path to use the new PMEM API and to adhere to
the read/write flows outlined in the "NVDIMM Block Window Driver
Writer's Guide":
http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf
This includes adding support for targeted NVDIMM flushes called "flush
hints" in the ACPI 6.0 specification:
http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf
For performance and media durability the mapping for a BLK aperture is
moved to a write-combining mapping which is consistent with
memcpy_to_pmem() and wmb_blk().
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 18:07:03 +0000 (14:07 -0400)]
tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test
In preparation for fixing the BLK path to properly use "directed
pcommit" enable the unit test infrastructure to emit mock "flush"
tables. Writes to these flush addresses trigger a memory controller to
flush its internal buffers to persistent media, similar to the x86
"pcommit" instruction.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 17:06:12 +0000 (11:06 -0600)]
tools/testing/nvdimm: fix return code for unimplemented commands
The implementation for the new "DIMM Flags" DSM relies on the -ENOTTY
return code to indicate that the flags are unimplimented and to fall
back to a safe default. As is the -ENXIO error code erroneoously
indicates to fail enabling a BLK region.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 17:06:11 +0000 (11:06 -0600)]
tools/testing/nvdimm: mock ioremap_wt
In the 4.2-rc1 merge the default_memremap_pmem() implementation switched
from ioremap_nocache() to ioremap_wt(). Add it to the list of mocked
routines to restore the ability to run the unit tests.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross Zwisler [Fri, 10 Jul 2015 17:06:10 +0000 (11:06 -0600)]
pmem: add maintainer for include/linux/pmem.h
The file include/linux/pmem.h was recently created to hold the PMEM API,
and is logically part of the PMEM driver. Add an entry for this file to
MAINTAINERS.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dmitry Torokhov [Fri, 10 Jul 2015 17:11:07 +0000 (10:11 -0700)]
Revert "Input: synaptics - allocate 3 slots to keep stability in image sensors"
This reverts commit
63c4fda3c0bb841b1aad1298fc7fe94058fc79f8 as it
causes issues with detecting 3-finger taps.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100481
Cc: stable@vger.kernel.org
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Mark Rutland [Fri, 10 Jul 2015 14:46:32 +0000 (15:46 +0100)]
arm64: entry32: remove pointless register assignment
We currently set x27 in compat_sys_sigreturn_wrapper and
compat_sys_rt_sigreturn_wrapper, similarly to what we do with r8/why on
32-bit ARM, in an attempt to prevent sigreturns from being restarted.
However, on arm64 we have always used pt_regs::syscallno for syscall
restarting (for both native and compat tasks), and x27 is never
inspected again before being overwritten in kernel_exit.
This patch removes the pointless register assignments.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Ralf Baechle [Thu, 9 Jul 2015 16:02:51 +0000 (18:02 +0200)]
MIPS: O32: Use compat_sys_getsockopt.
We were using the native syscall and that results in subtle breakage.
This is the same issue as fixed in
077d0e65618f27b2199d622e12ada6d8f3dbd862
(MIPS: N32: Use compat getsockopt syscall) but that commit did fix it only
for N32.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=100291
Paul Burton [Thu, 9 Jul 2015 09:40:41 +0000 (10:40 +0100)]
MIPS: c-r4k: Extend way_string array
The L2 cache in the I6400 core has 16 ways, so extend the way_string
array to take such caches into account.
[ralf@linux-mips.org: Other already supported CPUs are free to support
more than 8 ways of cache as well.]
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10640/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Fri, 17 Apr 2015 09:44:16 +0000 (10:44 +0100)]
MIPS: Pistachio: Support CDMM & Fast Debug Channel
Implement the mips_cdmm_phys_base() platform callback to provide a
default Common Device Memory Map (CDMM) physical base address for the
Pistachio SoC. This allows the CDMM in each VPE to be configured and
probed for devices, such as the Fast Debug Channel (FDC).
The physical address chosen is just below the default CPC address, which
appears to also be unallocated.
The FDC IRQ is also usable on Pistachio, and is routed through the GIC,
so implement the get_c0_fdc_int() platform callback using
gic_get_c0_fdc_int(), so the FDC driver doesn't have to fall back to
polling.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hartley <james.hartley@imgtec.com>
Cc: linux-mips@linux-mips.org
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Patchwork: http://patchwork.linux-mips.org/patch/9749/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Fri, 17 Apr 2015 09:44:15 +0000 (10:44 +0100)]
MIPS: Malta: Make GIC FDC IRQ workaround Malta specific
Wider testing reveals that the Fast Debug Channel (FDC) interrupt is
routed through the GIC just fine on Pistachio SoC, even though it
contains interAptiv cores. Clearly the FDC interrupt routing problems
previously observed on interAptiv and proAptiv cores are specific to the
Malta FPGA bitstreams.
Move the workaround for interAptiv and proAptiv out of
gic_get_c0_fdc_int() in the GIC irqchip driver into Malta's
get_c0_fdc_int() platform callback, to allow the Pistachio SoC to use
the FDC interrupt.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hartley <james.hartley@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/9748/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Markos Chandras [Fri, 10 Jul 2015 08:29:10 +0000 (09:29 +0100)]
MIPS: c-r4k: Fix cache flushing for MT cores
MT_SMP is not the only SMP option for MT cores. The MT_SMP option
allows more than one VPE per core to appear as a secondary CPU in the
system. Because of how CM works, it propagates the address-based
cache ops to the secondary cores but not the index-based ones.
Because of that, the code does not use IPIs to flush the L1 caches on
secondary cores because the CM would have done that already. However,
the CM functionality is independent of the type of SMP kernel so even in
non-MT kernels, IPIs are not necessary. As a result of which, we change
the conditional to depend on the CM presence. Moreover, since VPEs on
the same core share the same L1 caches, there is no need to send an
IPI on all of them so we calculate a suitable cpumask with only one
VPE per core.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10654/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Dave Airlie [Fri, 10 Jul 2015 05:59:35 +0000 (15:59 +1000)]
Merge tag 'omapdrm-4.2-fixes' of git://git./linux/kernel/git/tomba/linux into drm-fixes
omapdrm fixes for 4.2
Small fixes for omapdrm, including:
* Fix packed 24 bit color formats
* Ensure the planes are inside the crtc
* Handle out-of-dma-memory error
* tag 'omapdrm-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
drm/omap: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN
drm/omap: fix align_pitch() for 24 bits per pixel
drm/omap: fix omap_gem_put_paddr() error handling
drm/omap: fix omap_framebuffer_unpin() error handling
drm/omap: increase DMM transaction timeout
drm/omap: check that plane is inside crtc
drm/omap: return error if dma_alloc_writecombine fails