Since multiple ARCH configuration will be appended into mach-hisi
directory, add ARCH_HISI as common configuration for different platforms
in mach-hisi.
Merge tag 'for-3.17/bcm-soc' of git://github.com/broadcom/mach-bcm into next/soc
Merge "ARM: mach-bcm: soc updates for 3.17" from Matt Porter:
- BCM Mobile SMP support
- BRCM STB platform support
* tag 'for-3.17/bcm-soc' of git://github.com/broadcom/mach-bcm:
MAINTAINERS: add entry for Broadcom ARM STB architecture
ARM: brcmstb: select GISB arbiter and interrupt drivers
ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs
ARM: configs: enable SMP in bcm_defconfig
ARM: add SMP support for Broadcom mobile SoCs
Alex Elder [Mon, 30 Jun 2014 22:15:37 +0000 (17:15 -0500)]
ARM: add SMP support for Broadcom mobile SoCs
This patch adds SMP support for BCM281XX and BCM21664 family SoCs.
This feature is controlled with a distinct config option such that
an SMP-enabled multi-v7 binary can be configured to run these SoCs
in uniprocessor mode. Since this SMP functionality is used for
multiple Broadcom mobile chip families the config option is called
ARCH_BCM_MOBILE_SMP (for lack of a better name).
On SoCs of this type, the secondary core is not held in reset on
power-on. Instead it loops in a ROM-based holding pen. To release
it, one must write into a special register a jump address whose
low-order bits have been replaced with a secondary core's id, then
trigger an event with SEV. On receipt of an event, the ROM code
will examine the register's contents, and if the low-order bits
match its cpu id, it will clear them and write the value back to the
register just prior to jumping to the address specified.
The location of the special register is defined in the device tree
using a "secondary-boot-reg" property in a node whose "enable-method"
matches.
Derived from code originally provided by Ray Jui <rjui@broadcom.com>
Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Matt Porter <mporter@linaro.org>
Merge tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu into next/soc
Merge "mvebu SoC changes for v3.17 (round 4)" from Jason Cooper:
- Armada XP
- Fix return value check in pmsu code
- Document URLs for new public datasheets (Thanks, Marvell & free-electrons!)
- Armada 370/38x
- Add cpuidle support
- mvebu
- Fix build when no platforms are selected
- Update EBU SoC status in docs
* tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu: (21 commits)
Documentation: arm: misc updates to Marvell EBU SoC status
Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
ARM: mvebu: fix build without platforms selected
ARM: mvebu: add cpuidle support for Armada 38x
ARM: mvebu: add cpuidle support for Armada 370
cpuidle: mvebu: add Armada 38x support
cpuidle: mvebu: add Armada 370 support
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
ARM: mvebu: export the SCU address
ARM: mvebu: make the snoop disabling optional in mvebu_v7_pmsu_idle_prepare()
ARM: mvebu: use a local variable to store the resume address
ARM: mvebu: make the cpuidle initialization more generic
ARM: mvebu: rename the armada_370_xp symbols to mvebu_v7 in pmsu.c
ARM: mvebu: use the common function for Armada 375 SMP workaround
ARM: mvebu: add a common function for the boot address work around
ARM: mvebu: sort the #include of pmsu.c in alphabetic order
ARM: mvebu: split again armada_370_xp_pmsu_idle_enter() in PMSU code
ARM: mvebu: fix return value check in armada_xp_pmsu_cpufreq_init()
clk: mvebu: extend clk-cpu for dynamic frequency scaling
ARM: mvebu: extend PMSU code to support dynamic frequency scaling
...
Merge branch 'cleanup/gpio-header-removal' into next/soc
* cleanup/gpio-header-removal:
ARM: delete old reference to ARM_GPIOLIB_COMPLEX
ARM: kill CONFIG_NEED_MACH_GPIO_H
ARM: mach-s5p: get rid of all <mach/gpio.h> headers
ARM: s5p: cut the custom ARCH_NR_GPIOS definition
This resolves a massive amount of conflicts between the
mach/gpio.h removal and the s5p platform removal.
Almost all changes are trivial, as both sides remove
stuff.
Merge tag 'v3.17-rockchip-smp-hotplug' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/soc
Merge "CPU-Hotplug support for RK3066 and RK3188" from Heiko Stuebner:
* tag 'v3.17-rockchip-smp-hotplug' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: rockchip: Add cpu hotplug support for RK3XXX SoCs
ARM: rockchip: select ARMv7 compiler flags for platsmp.o
Merge tag 's5pv210-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
Merge "Samsung S5PV210 DT support for v3.17" from Kukjin Kim:
- support common clock framework for s5pv210 clock
- add generic PHY driver on s5pv210 to support it via DT
- add dt support for s5pv210-goni, smdkc110, smdkv210 and torbreck boards
- remove board files from mach-s5pv210 and unused codes
- enable multiplatform for s5pv210
* tag 's5pv210-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
clk: samsung: s5pv210: Remove legacy board support
ARM: SAMSUNG: Remove remaining legacy code
gpio: samsung: Remove legacy support of S5PV210
ARM: S5PV210: Enable multi-platform build support
cpufreq: s5pv210: Make the driver multiplatform aware
ARM: S5PV210: Register cpufreq platform device
ARM: S5PV210: move debug-macro.S into the common space
ARM: S5PV210: Untie PM support from legacy code
ARM: S5PV210: Remove support for board files
ARM: dts: Add Device tree for s5pc110/s5pv210 boards
ARM: dts: Add Device tree for s5pv210 SoC
ARM: S5PV210: Add board file for boot using Device Tree
phy: Add support for S5PV210 to the Exynos USB 2.0 PHY driver
clk: samsung: Add S5PV210 Audio Subsystem clock driver
ARM: SAMSUNG: Remove legacy clock code
serial: samsung: Remove support for legacy clock code
cpufreq: s3c24xx: Remove some dead code
ARM: S5PV210: Migrate clock handling to Common Clock Framework
clk: samsung: Add clock driver for S5PV210 and compatible SoCs
Merge tag 'power-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
Merge "Samsung power management related updates for v3.17" from Kukjin Kim
- support cluster power off on exynos5420 and exynos5800
to save power.
- use PMU address via DT to remove PMU static mapping
- remove exynos_cpuidle_init() and exynos_cpufreq_init()
* Note that this is including tags/samsung-cleanup and
tags/exynos-cpuidle are already merged into arm-soc.
* tag 'power-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Move cpufreq and cpuidle device registration to init_machine
ARM: EXYNOS: Refactored code for using PMU address via DT
ARM: EXYNOS: Support cluster power off on exynos5420/5800
Merge tag 'omap-for-v3.17/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical
Merge non-urgent omap fixes from Tony Lindgren:
Fixes for omaps that were not considered urgent enough for the
rc series. Mostly a fix for GPMC allocation and omap5 ABB
(Adaptive Body Bias).
* tag 'omap-for-v3.17/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: omap2+: gpmc-nand: Use dynamic platform_device_alloc()
omap16xx: Removes fixme no longer needed in ocpi_enable()
ARM: dts: OMAP5: Add device nodes for ABB
ARM: omap2+: usb-tusb6010.c: Cleaning up variable is set more than once
Merge tag 'omap-for-v3.17/soc-new' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
Merge "SoC related changes for omaps for v3.17 merge window"
from Tony Lindgren:
- Add device tree and hwmod data for various devices
for new SoCs
- Remove legacy mailbox hwmod data that's no longer
needed for SoCs that are DT only. Note that this may
cause a minor merge conflict in mach-omap2/devices.c
with omap_init_mbox() and omap_init_hdmi_audio(), both
are legacy code that is getting removed
* tag 'omap-for-v3.17/soc-new' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: DRA7: hwmod: Add data for RTC
arm: dra7xx: Add hwmod data for MDIO and CPSW
arm: dra7xx: Add hwmod data for pcie1 and pcie2 subsystems
arm: dra7xx: Add hwmod data for pcie1 phy and pcie2 phy
ARM: DRA7: hwmod: Add OCP2SCP3 module
ARM: DRA7: hwmod: remove interrupts for DMA
ARM: OMAP2+: DMA: remove requirement of irq for platform-dma driver
ARM: AM33xx: hwmod_data: Remove legacy mailbox addrs
ARM: OMAP4: hwmod_data: Remove legacy mailbox addrs
ARM: OMAP2: hwmod_data: Remove legacy mailbox data and addrs
ARM: OMAP2+: Avoid mailbox legacy device creation for DT-boot
ARM: DRA7: hwmod_data: Add mailbox hwmod data
ARM: dts: DRA7: Add mailbox nodes
ARM: dts: AM4372: Correct mailbox node data
ARM: dts: AM33xx: Add mailbox node
ARM: dts: OMAP4: Add mailbox node
ARM: dts: OMAP2+: Add mailbox fifo and user information
ARM: AM43xx: hwmod: add DSS hwmod data
Thomas Petazzoni [Thu, 24 Jul 2014 18:46:33 +0000 (20:46 +0200)]
Documentation: arm: misc updates to Marvell EBU SoC status
Following the merging of mach-kirkwood into mach-mvebu, the removal of
mach-kirkwood, and the progress of the integration of mach-dove into
mach-mvebu, this commit makes a few updates to the Marvell README file
in the kernel documentation.
Thomas Petazzoni [Thu, 24 Jul 2014 18:46:32 +0000 (20:46 +0200)]
Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
Marvell has very recently released a public version of the "Functional
specifications" and "Hardware specifications" datasheets for the
Marvell Armada XP SoC. This allows contributors and developers not
under NDA with Marvell to get more details about this SoC than what
the current kernel code shows, and hopefully allows to improve the
support for this SoC in the mainline kernel, as well as in other
projects.
Unlike the Armada XP and the Armada 370, this SoC uses a Cortex A9
core. Consequently, the procedure to enter the idle state is
different: interaction with the SCU, not disabling snooping, etc.
This commit introduces the cpuidle support for Armada 370. The main
difference compared to the already supported Armada XP is that the
Armada 370 has an issue caused by "a slow exit process from the deep
idle state due to heavy L1/L2 cache cleanup operations performed by
the BootROM software" (cf errata GL-BootROM-10).
To work around this issue, we replace the restart code of the BootROM
by some custom code located in an internal SRAM. For this purpose, we
use the common function mvebu_boot_addr_wa() introduced in the commit
"ARM: mvebu: Add a common function for the boot address work around".
The message in case of failure to suspend the system was switched from
the warn level to the debug level. Indeed due to the "slow exit
process from the deep idle state" in Armada 370, this situation
happens quite often. Using the debug level avoids spamming the kernel
logs, but still allows to enable it if needed.
Thomas Petazzoni [Wed, 23 Jul 2014 13:00:50 +0000 (15:00 +0200)]
cpuidle: mvebu: add Armada 38x support
This commit adds the list of cpuidle states supported by the Armada
38x SoC in the cpuidle-mvebu-v7 driver, as well as the necessary logic
around it to support this SoC.
Thomas Petazzoni [Wed, 23 Jul 2014 13:00:49 +0000 (15:00 +0200)]
cpuidle: mvebu: add Armada 370 support
This commit adds the list of cpuidle states supported by the Armada
370 SoC in the cpuidle-mvebu-v7 driver, as well as the necessary logic
around it to support this SoC.
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
This driver will be able to manage the cpuidle for more SoCs than just
Armada 370 and XP. It will also support Armada 38x and potentially
other SoC of the Marvell Armada EBU family. To take this into account,
this patch renames the driver and its symbols.
It also changes the driver name from cpuidle-armada-370-xp to
cpuidle-armada-xp, because separate platform drivers will be
registered for the other SoC types. This change must be done
simultaneously in the cpuidle driver and in the PMSU code in order to
remain bisectable.
The SCU address will be needed in other files than board-v7.c,
especially in pmsu.c for cpuidle related activities. So this patch
adds a function that allows to retrieve the virtual address at which
the SCU has been mapped.
ARM: mvebu: make the snoop disabling optional in mvebu_v7_pmsu_idle_prepare()
On some mvebu v7 SoCs (the ones using a Cortex-A9 core and not a PJ4B
core), the snoop disabling feature does not exist as the hardware
coherency is handled in a different way. Therefore, in preparation to
the introduction of the cpuidle support for those SoCs, this commit
modifies the mvebu_v7_psmu_idle_prepare() function to take several
flags, which allow to decide whether snooping should be disabled, and
whether we should use the deep idle mode or not.
ARM: mvebu: use a local variable to store the resume address
The resume address used by the cpuidle code will not always be the
same depending on the SoC. Using a local variable to store the resume
address allows to keep the same function for the PM notifier but with
a different address. This address will be set during the
initialization of the cpuidle logic in pmsu.c.
ARM: mvebu: rename the armada_370_xp symbols to mvebu_v7 in pmsu.c
Most of the function related to the PMSU are not specific to the
Armada 370 or Armada XP SoCs. They can also be used for most of the
other mvebu ARMv7 SoCs, and will actually be used to support cpuidle
on Armada 38x.
ARM: mvebu: use the common function for Armada 375 SMP workaround
Use the common function mvebu_setup_boot_addr_wa() introduced in the
commit "ARM: mvebu: Add a common function for the boot address work
around" instead of the dedicated version for Armada 375.
This commit also moves the workaround in the system-controller
module. Indeed the workaround on 375 is really related to setting the
boot address which is done by the system controller.
As a bonus we no longer use an harcoded value to access the register
storing the boot address.
ARM: mvebu: add a common function for the boot address work around
On some of the mvebu SoCs and due to internal BootROM issue, the CPU
initial jump code must be placed in the SRAM memory of the SoC. In
order to achieve this, we have to unmap the BootROM and at some
specific location where the BootROM was placed, create a dedicated
MBus window for the SRAM. This SRAM is initialized with a few
instructions of code that allows to jump to the real secondary CPU
boot address. The SRAM used is the Crypto engine one.
This work around is currently needed for booting SMP on Armada 375 Z1
and will be needed for cpuidle support on Armada 370. Instead of
duplicating the same code, this commit introduces a common function to
handle it: mvebu_setup_boot_addr_wa().
ARM: mvebu: split again armada_370_xp_pmsu_idle_enter() in PMSU code
do_armada_370_xp_cpu_suspend() and armada_370_xp_pmsu_idle_prepare(),
have been merged into a single function called
armada_370_xp_pmsu_idle_enter() by the commit "bbb92284b6c8 ARM:
mvebu: slightly refactor/rename PMSU idle related functions", in
prepare for the introduction of the CPU hotplug support for Armada XP.
But for cpuidle the prepare function will be common to all the mvebu
SoCs that use the PMSU, while the suspend function will be specific to
each SoC. Keeping the prepare function separate will help reducing
code duplication while new SoC support is added.
Merge tag 'v3.17-next-mediatek-support' of https://github.com/mbgg/linux-mediatek into next/soc
Merge basic support for the Mediatek Cortex-A7 SoCs from Matthias Brugger:
Support is quite basic, as the only component working up to now are the
timers.
* tag 'v3.17-next-mediatek-support' of https://github.com/mbgg/linux-mediatek:
arm: mediatek: add dts for Aquaris5 mobile phone
dt-bindings: add documentation for Mediatek SoC
arm: add basic support for Mediatek MT6589 boards
ARM: mvebu: fix return value check in armada_xp_pmsu_cpufreq_init()
In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().
ARM: rockchip: Add cpu hotplug support for RK3XXX SoCs
Adds ability to shutdown all CPUs except the first one
(since it might be special for a lot of platforms).
It is now possible to use kexec which requires such a feature.
ARM: rockchip: select ARMv7 compiler flags for platsmp.o
When compiling for multiplatform for both ARMv6 and ARMv7, the default
compiler flags are for ARMv6, and the following cpu-hotplug change will
fail with:
/tmp/ccSFxfmI.s:68: Error: selected processor does not support ARM mode `isb '
/tmp/ccSFxfmI.s:74: Error: selected processor does not support ARM mode `isb '
/tmp/ccSFxfmI.s:75: Error: selected processor does not support ARM mode `dsb '
Fix this in a similar manner as in commit 9f0affcf3e21 "ARM: mvebu: Fix pmsu
compilation when ARMv6 is selected", by specifying ARMv7 flags for platsmp.o.
ARM: EXYNOS: Move cpufreq and cpuidle device registration to init_machine
As exynos_cpuidle_init() and exynos_cpufreq_init() functions have just
one line of code for registering platform devices. So we can move them
to exynos_dt_machine_init() and remove exynos_cpuidle_init() and
exynos_cpufreq_init(). This will help in reducing lines of code in
exynos.c, making it more clean.
Suggested-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: EXYNOS: Refactored code for using PMU address via DT
Under "arm/mach-exynos" many files are using PMU register offsets.
Since we have added support for accessing PMU base address via DT,
now we can remove PMU mapping from exynosX_iodesc. Let's convert
all these access using iomapped address.
This will help us in removing static mapping of PMU base address
as well as help in reducing dependency over machine header files.
Thus helping for migration of PMU implementation from machine to
driver folder which can be reused for ARM64 based SoC.
Also as we have removed static mappings from "regs-pmu.h" it does
not need map.h anymore. But "platsmp.c" needed this and till now it
got included indirectly. So lets move header inclusion of
"mach/map.h" from "regs-pmu.h" to "platsmp.c".
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: EXYNOS: Support cluster power off on exynos5420/5800
Turning off a cluster when all 4 cores of the cluster are powered off
saves power significantly. Powering off the A15 L2 alone gives around
100mW in savings. Add support for powering off the A15/A7 clusters on
exynos5420/5800.
The patch enables specific register bits which ensure that:
- cluster L2 will be turned on before the first man is powered up.
- last man will be turned off before the cluster L2 is turned off.
- core is powered down before powering it up.
Remove the exynos_cluster_power_control function completely as we can
rely on the above mentioned bits rather than polling the cluster power
status register.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Nicolas Pitre <nico@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Mugunthan V N [Tue, 8 Jul 2014 13:16:39 +0000 (18:46 +0530)]
arm: dra7xx: Add hwmod data for MDIO and CPSW
Adding hwmod data for CPSW and MDIO which is present in DRA7xx SoC
Cc: Rajendra Nayak <rnayak@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
arm: dra7xx: Add hwmod data for pcie1 and pcie2 subsystems
Added hwmod data for pcie1 and pcie2 subsystem present in DRA7xx SOC.
Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Tested-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
arm: dra7xx: Add hwmod data for pcie1 phy and pcie2 phy
Added hwmod data for pcie1 and pcie2 phy present in DRA7xx SOC.
Also added the missing CLKCTRL OFFSET macro and CONTEXT OFFSET macro
for pcie1 phy and pcie2 phy.
Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Tested-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Peter Griffin [Wed, 4 Jun 2014 16:30:24 +0000 (17:30 +0100)]
MAINTAINERS: Add sdhci-st file to ARCH/STI architecture
Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Nishanth Menon [Thu, 12 Jun 2014 11:45:23 +0000 (17:15 +0530)]
ARM: DRA7: hwmod: remove interrupts for DMA
DMA interrupts are now available in of, and the definitions are
duplicates in hwmod. This prevents us from dynamically allocating
interrupt resources for dma from devicetree.
Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Nishanth Menon [Thu, 12 Jun 2014 11:45:22 +0000 (17:15 +0530)]
ARM: OMAP2+: DMA: remove requirement of irq for platform-dma driver
we have currently 2 DMA drivers that try to co-exist.
drivers/dma/omap-dma.c which registers it's own IRQ and is device tree
aware and uses arch/arm/plat-omap/dma.c instance created by
arch/arm/mach-omap2/dma.c to maintain channel usage (omap_request_dma).
Currently both try to register interrupts and mach-omap2/plat-omap dma.c
attempts to use the IRQ number registered by hwmod to register it's own
interrupt handler.
Now, there is no reasonable way of static allocating DMA irq in GIC
SPI when we use crossbar. However, since the dma_chan structure is
freed as a result of IRQ not being present due to devm allocation,
maintaining information of channel by platform code fails at a later
point in time when that region of memory is reused.
So, if hwmod does not indicate an IRQ number, then, assume that
dma-engine will take care of the interrupt handling.
Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Merge tag 'staging-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull more IIO driver fixes from Greg KH:
"Here are two IIO driver fixes for 3.16-rc6 that resolve some reported
issues"
* tag 'staging-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: mma8452: Use correct acceleration units.
iio:core: Handle error when mask type is not separate
Merge tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are two USB patches that resolve some reported issues, one with
an odd HUB, and one in the chipidea driver"
* tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: Check if port status is equal to RxDetect
usb: chipidea: udc: Disable auto ZLP generation on ep0
Merge tag 'driver-core-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fix from Greg KH:
"Here is a single driver core fix that reverts an older patch that has
been causing a number of reported problems with the platform devices.
This revert has been in linux-next for a while with no reported issues"
* tag 'driver-core-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
platform_get_irq: Revert to platform_get_resource if of_irq_get fails
Merge tag 'char-misc-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fix from Greg KH:
"Here's a single hyper-v driver fix for a reported issue"
* tag 'char-misc-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: hv_fcopy: fix a race condition for SMP guest
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull intel drm fixes from Dave Airlie:
"Intel fixes came in late, but since I debugged one of them I'll send
them on,
Two reverts, a quirk and one warn regression"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
Revert "drm/i915: reverse dp link param selection, prefer fast over wide again"
drm/i915: Track the primary plane correctly when reassigning planes
drm/i915: Ignore VBT backlight presence check on HP Chromebook 14
Revert "drm/i915: Don't set the 8to6 dither flag when not scaling"
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger:
"Four fixes, all discovered by Trinity"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: segv: Save regs only in case of a kernel mode fault
um: Fix hung task in fix_range_common()
um: Ensure that a stub page cannot get unmapped
Revert "um: Fix wait_stub_done() error handling"
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"We have two more fixes in my for-linus branch.
I was hoping to also include a fix for a btrfs deadlock with
compression enabled, but we're still nailing that one down"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: test for valid bdev before kobj removal in btrfs_rm_device
Btrfs: fix abnormal long waiting in fsync
Merge tag 'nfs-for-3.16-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Apologies for the relative lateness of this pull request, however the
commits fix some issues with the NFS read/write code updates in
3.16-rc1 that can cause serious Oopsing when using small r/wsize. The
delay was mainly due to extra testing to make sure that the fixes
behave correctly.
Highlights include;
- Stable fix for an NFSv3 posix ACL regression
- Multiple fixes for regressions to the NFS generic read/write code:
- Fix page splitting bugs that come into play when a small
rsize/wsize read/write needs to be sent again (due to error
conditions or page redirty)
- Fix nfs_wb_page_cancel, which is called by the "invalidatepage"
method
- Fix 2 compile warnings about unused variables
- Fix a performance issue affecting unstable writes"
* tag 'nfs-for-3.16-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Don't reset pg_moreio in __nfs_pageio_add_request
NFS: Remove 2 unused variables
nfs: handle multiple reqs in nfs_wb_page_cancel
nfs: handle multiple reqs in nfs_page_async_flush
nfs: change find_request to find_head_request
nfs: nfs_page should take a ref on the head req
nfs: mark nfs_page reqs with flag for extra ref
nfs: only show Posix ACLs in listxattr if actually present
Olof Johansson [Sat, 19 Jul 2014 22:03:08 +0000 (15:03 -0700)]
Merge tag 'exynos-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
Merge "Samsung exynos cpuidle update for v3.17" from Kukjin Kim:
- add callbacks exynos_suspend() and exynos_powered_up()
for support cpuidle through mcpm
- skip exynos_cpuidle for exynos5420 because is uses
cpuidle-big-liggle generic cpuidle driver
- add generic functions to calculate cpu number is used
for pmu and this is required for exynos5420 multi-cluster
- add of_device_id structure for big.LITTLE cpuidle and
add "samsung,exynos5420" compatible string for exynos5420
* tag 'exynos-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: populate suspend and powered_up callbacks for mcpm
ARM: EXYNOS: do not allow cpuidle registration for exynos5420
cpuidle: big.LITTLE: init driver for exynos5420
cpuidle: big.LITTLE: Add ARCH_EXYNOS entry in config
ARM: EXYNOS: add generic function to calculate cpu number
cpuidle: big.LITTLE: add of_device_id structure
+ Linux 3.16-rc5
Fix building of exynos_defconfig with disabled PM_SLEEP:
CONFIG_PM_SLEEP=n
CONFIG_PM_SLEEP_SMP=n
CONFIG_SUSPEND=n
by moving functions for power up/down of CPU and cluster to platsmp.c
The build error messages:
arch/arm/mach-exynos/built-in.o: In function `exynos_boot_secondary':
arch/arm/mach-exynos/platsmp.c:111: undefined reference to `exynos_cpu_power_state'
arch/arm/mach-exynos/platsmp.c:112: undefined reference to `exynos_cpu_power_up'
arch/arm/mach-exynos/platsmp.c:116: undefined reference to `exynos_cpu_power_state'
make: *** [vmlinux] Error 1
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com>, Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Sat, 19 Jul 2014 21:28:06 +0000 (14:28 -0700)]
Merge tag 'mvebu-soc-3.17-2' of git://git.infradead.org/linux-mvebu into next/soc
Merge "ARM: mvebu SoC changes for v3.17 (round 2)" from Jason Cooper:
"Yeah, it's just one patch, but it's a beautiful one! Thanks to the
efforts of many people over the last couple years, and in particular,
Andrew Lunn, Kirkwood has been completely converted to DT."
- kirkwood
* Remove mach-kirkwood/, It's fully supported in mach-mvebu/
* tag 'mvebu-soc-3.17-2' of git://git.infradead.org/linux-mvebu:
ARM: Kirkwood: Remove mach-kirkwood
Olof Johansson [Sat, 19 Jul 2014 19:22:47 +0000 (12:22 -0700)]
Merge tag 'sunxi-core-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/soc
Merge "Allwinner core additions for 3.17" from Maxime Ripard:
Nothing very fancy here, only the introduction from the new Allwinner A23 SoC.
* tag 'sunxi-core-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: sunxi: select MFD_SUN6I_PRCM when sun8i arch support is enabled
ARM: sunxi: Add earlyprintk support using R_UART (sun6i/sun8i)
ARM: sunxi: Introduce Allwinner A23 support
Olof Johansson [Sat, 19 Jul 2014 18:56:39 +0000 (11:56 -0700)]
Merge tag 'imx-soc-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc
Merge "ARM: imx: SoC changes for 3.17" from Shawn Guo:
The i.MX SoC changes for 3.17:
- Add devicetree support for i.MX1 and i.MX21 clock driver
- Use CLOCKSOURCE_OF_DECLARE() to initialize timer for DT targets
- Use of_clk_init() to initialize i.MX25 and i.MX27 clock driver in
device tree boot
- Remove i.MX1 camera support
- Remove i.MX27 IP Camera and Lite-Kit board support
- Add suspend and cpuidle support for i.mx6sx
- Clean up unused clk_register_clkdev() lookups
- Update imx-weim bus driver to support populating devices on a simple
bus
- Switch i.MX27 and i.MX6QDL clock driver to use macro for clock IDs
- Make i.MX51 a DT only platform and clean up the non-DT support code
- Support disabling supervisor protect via DT
- Random defconfig updates
* tag 'imx-soc-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (69 commits)
ARM: imx: clk-vf610: fix FlexCAN clock gating
ARM: i.MX: Use CLOCKSOURCE_OF_DECLARE() for DT targets
ARM: i.MX53: globally disable supervisor protect
ARM: i.MX: allow disabling supervisor protect via DT
ARM: i.MX27 clk: Add 26 MHz oscillator circuit clock gate
ARM: i.MX27 clk: Remove unused definitions
ARM: i.MX27 clk: Introduce DT include for clock provider
ARM: i.MX: Remove Freescale Logic Product Development i.MX27 Lite-Kit board support
ARM: i.MX: Remove excess symbols ARCH_MX1, ARCH_MX25 and MACH_MX27
ARM: i.MX: Remove i.MX1 camera support
ARM: imx: use PTR_ERR_OR_ZERO
bus: imx-weim: populate devices on a simple bus
ARM: imx: build cpu_is_imx6sl function conditionally
ARM: imx: imx6sx uses imx6q cpuidle code
ARM: imx: drop PL310 errata 588369 and 727915
ARM: imx_v6_v7_defconfig: add FSL_EDMA and PRINTK_TIME
ARM: imx: clk-imx6sx: register SSI/SSI_IPG as shared gate clocks
ARM: imx_v6_v7_defconfig: Enable flexcan driver for can support
ARM: imx_v6_v7_defconfig: Enable STMPE gpio support
ARM: imx: mark .dt_compat as const
...
Eric Sandeen [Mon, 7 Jul 2014 17:34:49 +0000 (12:34 -0500)]
btrfs: test for valid bdev before kobj removal in btrfs_rm_device
commit 99994cd btrfs: dev delete should remove sysfs entry
added a btrfs_kobj_rm_device, which dereferences device->bdev...
right after we check whether device->bdev might be NULL.
I don't honestly know if it's possible to have a NULL device->bdev
here, but assuming that it is (given the test), we need to move
the kobject removal to be under that test.
(Coverity spotted this)
Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Chris Mason <clm@fb.com>
Liu Bo [Thu, 17 Jul 2014 08:08:36 +0000 (16:08 +0800)]
Btrfs: fix abnormal long waiting in fsync
xfstests generic/127 detected this problem.
With commit 7fc34a62ca4434a79c68e23e70ed26111b7a4cf8, now fsync will only flush
data within the passed range. This is the cause of the above problem,
-- btrfs's fsync has a stage called 'sync log' which will wait for all the
ordered extents it've recorded to finish.
In xfstests/generic/127, with mixed operations such as truncate, fallocate,
punch hole, and mapwrite, we get some pre-allocated extents, and mapwrite will
mmap, and then msync. And I find that msync will wait for quite a long time
(about 20s in my case), thanks to ftrace, it turns out that the previous
fallocate calls 'btrfs_wait_ordered_range()' to flush dirty pages, but as the
range of dirty pages may be larger than 'btrfs_wait_ordered_range()' wants,
there can be some ordered extents created but not getting corresponding pages
flushed, then they're left in memory until we fsync which runs into the
stage 'sync log', and fsync will just wait for the system writeback thread
to flush those pages and get ordered extents finished, so the latency is
inevitable.
This adds a flush similar to btrfs_start_ordered_extent() in
btrfs_wait_logged_extents() to fix that.
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"The locking department delivers:
- A rather large and intrusive bundle of fixes to address serious
performance regressions introduced by the new rwsem / mcs
technology. Simpler solutions have been discussed, but they would
have been ugly bandaids with more risk than doing the right thing.
- Make the rwsem spin on owner technology opt-in for architectures
and enable it only on the known to work ones.
- A few fixes to the lockdep userspace library"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER
locking/mutex: Disable optimistic spinning on some architectures
locking/rwsem: Reduce the size of struct rw_semaphore
locking/rwsem: Rename 'activity' to 'count'
locking/spinlocks/mcs: Micro-optimize osq_unlock()
locking/spinlocks/mcs: Introduce and use init macro and function for osq locks
locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead
locking/spinlocks/mcs: Rename optimistic_spin_queue() to optimistic_spin_node()
locking/rwsem: Allow conservative optimistic spinning when readers have lock
tools/liblockdep: Account for bitfield changes in lockdeps lock_acquire
tools/liblockdep: Remove debug print left over from development
tools/liblockdep: Fix comparison of a boolean value with a value of 2
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Three patches addressing shortcomings in the ARM gic interrupt chip
driver"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: gic: Fix core ID calculation when topology is read from DT
irqchip: gic: Add binding probe for ARM GIC400
irqchip: gic: Add support for cortex a7 compatible string
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix for a long standing issue in the alarm timer subsystem,
which was noticed recently when people finally started to use alarm
timers for serious work"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
alarmtimer: Fix bug where relative alarm timers were treated as absolute
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU fixes from Thomas Gleixner:
"Two RCU patches:
- Address a serious performance regression on open/close caused by
commit ac1bea85781e ("Make cond_resched() report RCU quiescent
states")
- Export RCU debug functions. Not a regression, but enablement to
address a serious recursion bug in the sl*b allocators in 3.17"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rcu: Reduce overhead of cond_resched() checks for RCU
rcu: Export debug_init_rcu_head() and and debug_init_rcu_head()
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A smaller set of fixes this week, and all regression fixes:
- a handful of issues fixed on at91 with common clock conversion
- a set of fixes for Marvell mvebu (SMP, coherency, PM)
- a clock fix for i.MX6Q.
- ... and a SMP/hotplug fix for Exynos"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
ARM: at91/dt: add missing clocks property to pwm node in sam9x5.dtsi
ARM: at91/dt: fix usb0 clocks definition in sam9n12 dtsi
ARM: at91: at91sam9x5: correct typo error for ohci clock
ARM: clk-imx6q: parent lvds_sel input from upstream clock gates
ARM: mvebu: Fix coherency bus notifiers by using separate notifiers
ARM: mvebu: Fix the operand list in the inline asm of armada_370_xp_pmsu_idle_enter
ARM: mvebu: fix SMP boot for Armada 38x and Armada 375 Z1 in big endian
Dave Airlie [Sat, 19 Jul 2014 06:48:38 +0000 (16:48 +1000)]
Merge tag 'drm-intel-fixes-2014-07-18' of git://anongit.freedesktop.org/drm-intel
But in any case nothing really shocking in
here, 2 reverts, 1 quirk and a regression fix a WARN.
* tag 'drm-intel-fixes-2014-07-18' of git://anongit.freedesktop.org/drm-intel:
Revert "drm/i915: reverse dp link param selection, prefer fast over wide again"
drm/i915: Track the primary plane correctly when reassigning planes
drm/i915: Ignore VBT backlight presence check on HP Chromebook 14
Revert "drm/i915: Don't set the 8to6 dither flag when not scaling"
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"A couple of key fixes and a few less critical ones. The main ones
are:
- add a .bss section to the PE/COFF headers when building with EFI
stub
- invoke the correct paravirt magic when building the espfix page
tables
Unfortunately both of these areas also have at least one additional
fix each still in thie pipeline, but which are not yet ready to push"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Remove unused variable "polling"
x86/espfix/xen: Fix allocation of pages for paravirt page tables
x86/efi: Include a .bss section within the PE/COFF headers
efi: fdt: Do not report an error during boot if UEFI is not available
efi/arm64: efistub: remove local copy of linux_banner
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull infiniband/rdma fixes from Roland Dreier:
- cxgb4 hardware driver regression fixes
- mlx5 hardware driver regression fixes
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/mlx5: Enable "block multicast loopback" for kernel consumers
RDMA/cxgb4: Call iwpm_init() only once
mlx5_core: Fix possible race between mr tree insert/delete
RDMA/cxgb4: Initialize the device status page
RDMA/cxgb4: Clean up connection on ARP error
RDMA/cxgb4: Fix skb_leak in reject_cr()
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"More fallout from module tests and code inspection.
Fixes to temperature limit write operations in adt7470 driver. Also,
dashes are not allowed in hwmon 'name' attributes. Fix drivers where
necessary"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (adt7470) Fix writes to temperature limit registers
hwmon: (da9055) Don't use dash in the name attribute
hwmon: (da9052) Don't use dash in the name attribute
Merge tag 'iommu-fixes-v3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
"A couple of fixes for the Freescale PAMU driver queued up:
- fix PAMU window size check.
- fix the device domain attach condition.
- fix the error condition during iommu group"
* tag 'iommu-fixes-v3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/fsl: Fix the error condition during iommu group
iommu/fsl: Fix the device domain attach condition.
iommu/fsl: Fix PAMU window size check.
Merge tag 'pm+acpi-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These are a few recent regression fixes, a revert of the ACPI video
commit I promised, a system resume fix related to request_firmware(),
an ACPI video quirk for one more Win8-oriented BIOS, an ACPI device
enumeration documentation update and a few fixes for ARM cpufreq
drivers.
Specifics:
- Fix for a recently introduced NULL pointer dereference in the core
system suspend code occuring when platforms without ACPI attempt to
use the "freeze" sleep state from Zhang Rui.
- Fix for a recently introduced build warning in cpufreq headers from
Brian W Hart.
- Fix for a 3.13 cpufreq regression related to sysem resume that
triggers on some systems with multiple CPU clusters from Viresh
Kumar.
- Fix for a 3.4 regression in request_firmware() resulting in
WARN_ON()s on some systems during system resume from Takashi Iwai.
- Revert of the ACPI video commit that changed the default value of
the video.brightness_switch_enabled command line argument to 0 as
it has been reported to break existing setups.
- ACPI device enumeration documentation update to take recent code
changes into account and make the documentation match the code
again from Darren Hart.
- Fixes for the sa1110, imx6q, kirkwood, and cpu0 cpufreq drivers
from Linus Walleij, Nicolas Del Piano, Quentin Armitage, Viresh
Kumar.
- New ACPI video blacklist entry for HP ProBook 4540s from Hans de
Goede"
* tag 'pm+acpi-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: make table sentinel macros unsigned to match use
cpufreq: move policy kobj to policy->cpu at resume
cpufreq: cpu0: OPPs can be populated at runtime
cpufreq: kirkwood: Reinstate cpufreq driver for ARCH_KIRKWOOD
cpufreq: imx6q: Select PM_OPP
cpufreq: sa1110: set memory type for h3600
ACPI / video: Add use_native_backlight quirk for HP ProBook 4540s
PM / sleep: fix freeze_ops NULL pointer dereferences
PM / sleep: Fix request_firmware() error at resume
Revert "ACPI / video: change acpi-video brightness_switch_enabled default to 0"
ACPI / documentation: Remove reference to acpi_platform_device_ids from enumeration.txt
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"One nouveau deadlock fix, one qxl irq handling fix, and a set of
radeon pageflipping changes that fix regressions in pageflipping since
-rc1 along with a leak and backlight fix.
The pageflipping fixes are a bit bigger than I'd like, but there has
been a few people focused on testing them"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: Make classic pageflip completion path less racy.
drm/radeon: Add missing vblank_put in pageflip ioctl error path.
drm/radeon: Remove redundant fence unref in pageflip path.
drm/radeon: Complete page flip even if waiting on the BO fence fails
drm/radeon: Move pinning the BO back to radeon_crtc_page_flip()
drm/radeon: Prevent too early kms-pageflips triggered by vblank.
drm/radeon: set default bl level to something reasonable
drm/radeon: avoid leaking edid data
drm/qxl: return IRQ_NONE if it was not our irq
drm/nouveau/therm: fix a potential deadlock in the therm monitoring code
Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull /dev/random fix from Ted Ts'o:
"Fix a BUG splat found by trinity"
* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: check for increase of entropy_count because of signed conversion
random: check for increase of entropy_count because of signed conversion
The expression entropy_count -= ibytes << (ENTROPY_SHIFT + 3) could
actually increase entropy_count if during assignment of the unsigned
expression on the RHS (mind the -=) we reduce the value modulo
2^width(int) and assign it to entropy_count. Trinity found this.
[ Commit modified by tytso to add an additional safety check for a
negative entropy_count -- which should never happen, and to also add
an additional paranoia check to prevent overly large count values to
be passed into urandom_read(). ]
Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
projects / karo-tx-linux.git / log