| Commit message (Collapse) | Author | Age | Files | Lines |
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This is a new device driver for a high performance SR-IOV assisted virtual
network for IBM System p and IBM System i systems. The SR-IOV VF will be
attached to the VIOS partition and mapped to the Linux client via the
hypervisor's VNIC protocol that this driver implements.
This driver is able to perform basic tx and rx, new features
and improvements will be added as they are being developed and tested.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When sometimes structs or variables need to be initialized/'memset' to 0 in
an eBPF C program, the x86 BPF JIT converts this to use immediates. We can
however save a couple of bytes (f.e. even up to 7 bytes on a single emmission
of BPF_LD | BPF_IMM | BPF_DW) in the image by detecting such case and use xor
on the dst register instead.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Back in the days where eBPF (or back then "internal BPF" ;->) was not
exposed to user space, and only the classic BPF programs internally
translated into eBPF programs, we missed the fact that for classic BPF
A and X needed to be cleared. It was fixed back then via 83d5b7ef99c9
("net: filter: initialize A and X registers"), and thus classic BPF
specifics were added to the eBPF interpreter core to work around it.
This added some confusion for JIT developers later on that take the
eBPF interpreter code as an example for deriving their JIT. F.e. in
f75298f5c3fe ("s390/bpf: clear correct BPF accumulator register"), at
least X could leak stack memory. Furthermore, since this is only needed
for classic BPF translations and not for eBPF (verifier takes care
that read access to regs cannot be done uninitialized), more complexity
is added to JITs as they need to determine whether they deal with
migrations or native eBPF where they can just omit clearing A/X in
their prologue and thus reduce image size a bit, see f.e. cde66c2d88da
("s390/bpf: Only clear A and X for converted BPF programs"). In other
cases (x86, arm64), A and X is being cleared in the prologue also for
eBPF case, which is unnecessary.
Lets move this into the BPF migration in bpf_convert_filter() where it
actually belongs as long as the number of eBPF JITs are still few. It
can thus be done generically; allowing us to remove the quirk from
__bpf_prog_run() and to slightly reduce JIT image size in case of eBPF,
while reducing code duplication on this matter in current(/future) eBPF
JITs.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Tested-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Cc: Zi Shen Lim <zlim.lnx@gmail.com>
Cc: Yang Shi <yang.shi@linaro.org>
Acked-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- Two bug fixes for misuse of PAGE_MASK in scatterlist and dma-debug.
These are tagged for -stable. The scatterlist impact is potentially
corrupted dma addresses on HIGHMEM enabled platforms.
- A minor locking fix for the NFIT hot-add implementation that is new
in 4.4-rc. This would only trigger in the case a hot-add raced
driver removal.
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dma-debug: Fix dma_debug_entry offset calculation
Revert "scatterlist: use sg_phys()"
nfit: acpi_nfit_notify(): Do not leave device locked
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commit db0fa0cb0157 "scatterlist: use sg_phys()" did replacements of
the form:
phys_addr_t phys = page_to_phys(sg_page(s));
phys_addr_t phys = sg_phys(s) & PAGE_MASK;
However, this breaks platforms where sizeof(phys_addr_t) >
sizeof(unsigned long). Revert for 4.3 and 4.4 to make room for a
combined helper in 4.5.
Cc: <stable@vger.kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Fixes: db0fa0cb0157 ("scatterlist: use sg_phys()")
Suggested-by: Joerg Roedel <joro@8bytes.org>
Reported-by: Vitaly Lavrov <vel21ripn@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Pull ARM fixes from Russell King:
"Further ARM fixes:
- Anson Huang noticed that we were corrupting a register we shouldn't
be during suspend on some CPUs.
- Shengjiu Wang spotted a bug in the 'swp' instruction emulation.
- Will Deacon fixed a bug in the ASID allocator.
- Laura Abbott fixed the kernel permission protection to apply to all
threads running in the system.
- I've fixed two bugs with the domain access control register
handling, one to do with printing an appropriate value at oops
time, and the other to further fix the uaccess_with_memcpy code"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8475/1: SWP emulation: Restore original *data when failed
ARM: 8471/1: need to save/restore arm register(r11) when it is corrupted
ARM: fix uaccess_with_memcpy() with SW_DOMAIN_PAN
ARM: report proper DACR value in oops dumps
ARM: 8464/1: Update all mm structures with section adjustments
ARM: 8465/1: mm: keep reserved ASIDs in sync with mm after multiple rollovers
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__user_swpX_asm maybe failed in first STREX operation, emulate_swpX
will try again, but the *data has been changed in first time. which
causes the result is wrong.
This patch is to fix this issue. When STREX succeed, change the *data.
if it fail, *data is not changed.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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In cpu_v7_do_suspend routine, r11 is used while it is NOT
saved/restored, different compiler may have different usage
of ARM general registers, so it may cause issues during
calling cpu_v7_do_suspend.
We meet kernel fault occurs when using GCC 4.8.3, r11 contains
valid value before calling into cpu_v7_do_suspend, but when returned
from this routine, r11 is corrupted and lead to kernel fault.
Doing save/restore for those corrupted registers is a must in
assemble code.
Signed-off-by: Anson Huang <Anson.Huang@freescale.com>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Cc: <stable@vger.kernel.org> # v3.3+
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The uaccess_with_memcpy() code is currently incompatible with the SW
PAN code: it takes locks within the region that we've changed the DACR,
potentially sleeping as a result. As we do not save and restore the
DACR across co-operative sleep events, can lead to an incorrect DACR
value later in this code path.
Reported-by: Peter Rosin <peda@axentia.se>
Tested-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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When printing the DACR value, we print the domain register value.
This is incorrect, as with SW_PAN enabled, that is the current setting,
rather than the faulting context's setting. Arrange to print the
faulting domain's saved DACR value instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Currently, when updating section permissions to mark areas RO
or NX, the only mm updated is current->mm. This is working off
the assumption that there are no additional mm structures at
the time. This may not always hold true. (Example: calling
modprobe early will trigger a fork/exec). Ensure all mm structres
get updated with the new section information.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Under some unusual context-switching patterns, it is possible to end up
with multiple threads from the same mm running concurrently with
different ASIDs:
1. CPU x schedules task t with mm p containing ASID a and generation g
This task doesn't block and the CPU doesn't context switch.
So:
* per_cpu(active_asid, x) = {g,a}
* p->context.id = {g,a}
2. Some other CPU generates an ASID rollover. The global generation is
now (g + 1). CPU x is still running t, with no context switch and
so per_cpu(reserved_asid, x) = {g,a}
3. CPU y schedules task t', which shares mm p with t. The generation
mismatches, so we take the slowpath and hit the reserved ASID from
CPU x. p is then updated so that p->context.id = {g + 1,a}
4. CPU y schedules some other task u, which has an mm != p.
5. Some other CPU generates *another* CPU rollover. The global
generation is now (g + 2). CPU x is still running t, with no context
switch and so per_cpu(reserved_asid, x) = {g,a}.
6. CPU y once again schedules task t', but now *fails* to hit the
reserved ASID from CPU x because of the generation mismatch. This
results in a new ASID being allocated, despite the fact that t is
still running on CPU x with the same mm.
Consequently, TLBIs (e.g. as a result of CoW) will not be synchronised
between the two threads.
This patch fixes the problem by updating all of the matching reserved
ASIDs when we hit on the slowpath (i.e. in step 3 above). This keeps
the reserved ASIDs in-sync with the mm and avoids the problem.
Cc: <stable@vger.kernel.org>
Reported-by: Tony Thompson <anthony.thompson@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull ia64 fix from Tony Luck:
"Wire up mlock2() syscall for ia64"
* tag 'please-pull-mlock2' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
[IA64] Enable mlock2 syscall for ia64
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New system call added in
commit a8ca5d0ecbdde5cc3d7accacbd69968b0c98764e
mm: mlock: add new mlock system call
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Pavel Machek reports a warning about W+X pages found in the "Persisent"
kmap area. After grepping for it (using the correct spelling), and not
finding it, I noticed how the debug printk was just misspelled. Fix it.
The actual mapping bug that Pavel reported is still open. It's
apparently a separate issue from the known EFI page tables, looks like
it's related to the HIGHMEM mappings.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixlets from Thomas Gleixner:
"Two trivial fixes which add missing header fileas and forward
declarations so the code will compile even when the magic include
chains are different"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3: Add missing include for barrier.h
irqchip/gic-v3: Add missing struct device_node declaration
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Both the 32bit and 64bit versions of the GICv3 header file are using
barriers, but neglect to include barrier.h, leading to an interesting
splat in some circumstances.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1449483072-17694-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Here are a bunch of small bug fixes for various ARM platforms, nothing
really sticks out this week, most of either fixes bugs in code that
was just added in 4.4, or that has been broken for many years without
anyone noticing.
at91/sama5d2:
- fix sama5de hardware setup of sd/mmc interface
- proper selection of pinctrl drivers. PIO4 is necessary for sama5d2
berlin:
- fix incorrect clock input for SDIO
exynos:
- Fix potential NULL pointer dereference in Exynos PMU driver.
imx:
- Fix vf610 SAI clock configuration bug which is discovered by the
newly added master mode support in SAI audio driver.
- Fix buggy L2 cache latency values in vf610 device trees, which may
cause system hang when cpu runs at a higher frequency.
ixp4xx:
- fix prototypes for readl/writel functions
ls2080a:
- use little-endian register access for GPIO and SDHCI
omap:
- Fix clock source for ARM TWD and global timers on am437x
- Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of when
MACH_OMAP3_PANDORA is selected
- Fix SPI DMA handles for dm816x as only some were mapped
- Fix up mbox cells for dm816x to make mailbox usable
pxa:
- use PWM lookup table for all ezx machines
s3c24xx:
- Remove incorrect __init annotation from s3c24xx cpufreq driver
structures.
versatile:
- fix PCI IRQ mapping on Versatile PB"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ls2080a/dts: Add little endian property for GPIO IP block
dt-bindings: define little-endian property for QorIQ GPIO
ARM64: dts: ls2080a: fix eSDHC endianness
ARM: dts: vf610: use reset values for L2 cache latencies
ARM: pxa: use PWM lookup table for all machines
ARM: dts: berlin: add 2nd clock for BG2Q sdhci0 and sdhci1
ARM: dts: berlin: correct BG2Q's sdhci2 2nd clock
ARM: dts: am4372: fix clock source for arm twd and global timers
ARM: at91: fix pinctrl driver selection
ARM: at91/dt: add always-on to 1.8V regulator
ARM: dts: vf610: fix clock definition for SAI2
ARM: imx: clk-vf610: fix SAI clock tree
ARM: ixp4xx: fix read{b,w,l} return types
irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
ARM: OMAP2+: enable REGULATOR_FIXED_VOLTAGE
ARM: dts: add dm816x missing spi DT dma handles
ARM: dts: add dm816x missing #mbox-cells
cpufreq: s3c24xx: Do not mark s3c2410_plls_add as __init
ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
Merge "ARM: imx: fixes for 4.4, 2nd round" from Shawn Guo:
The i.MX fixes for 4.4, 2nd round:
- Fix vf610 SAI clock configuration bug which is discovered by the newly
added master mode support in SAI audio driver.
- Fix buggy L2 cache latency values in vf610 device trees, which may
cause system hang when cpu runs at a higher frequency.
* tag 'imx-fixes-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: vf610: use reset values for L2 cache latencies
ARM: dts: vf610: fix clock definition for SAI2
ARM: imx: clk-vf610: fix SAI clock tree
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Linux on Vybrid used several different L2 latencies so far, none
of them seem to be the right ones. According to the application note
AN4947 ("Understanding Vybrid Architecture"), the tag portion runs
on CPU clock and is inside the L2 cache controller, whereas the data
portion is stored in the external SRAM running on platform clock.
Hence it is likely that the correct value requires a higher data
latency then tag latency.
These are the values which have been used so far:
- The mainline values:
arm,data-latency = <1 1 1>;
arm,tag-latency = <2 2 2>;
Those values have lead to problems on higher clocks. They look
like a poor translation from the reset values (missing +1 offset
and a mix up between tag/latency values).
- The Linux 3.0 (SoC vendor BSP) values (converted to DT notation):
arm,data-latency = <4 2 3>
arm,tag-latency = <4 2 3>
The cache initialization function along with the value matches the
i.MX6 code from the same kernel, so it seems that those values have
just been copied.
- The Colibri values:
arm,data-latency = <2 1 2>;
arm,tag-latency = <3 2 3>;
Those were a mix between the values of the Linux 3.0 based BSP and
the mainline values above.
- The SoC Reset values (converted to DT notation):
arm,data-latency = <3 3 3>;
arm,tag-latency = <2 2 2>;
So far there is no official statement on what the correct values are.
See also the related Freescale community thread:
https://community.freescale.com/message/579785#579785
For now, the reset values seem to be the best bet. Remove all other
"bogus" values and use the reset value on vf610.dtsi level.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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So far, only the bus clock has been assigned, but in reality the
SAI IP has for clock inputs. The driver has been updated to
make use of the additional clock inputs by c3ecef21c3f2 ("ASoC:
fsl_sai: add sai master mode support"). Due to a bug in the
clock tree, the audio clock has been enabled none the less by
the specified bus clock (see "ARM: imx: clk-vf610: fix SAI
clock tree"), which made master mode even without the proper
clock assigned working.
This patch completes the clock definition for SAI2. On Vybrid,
only two MCLK out of the four options are available (the first
being the bus clock itself). See chapter 8.10.1.2.3 of the
Vybrid Reference manual ("SAI transmitter and receiver options
for MCLK selection"). Note: The audio clocks are only required
in master mode.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The GPIO block for ls2080a platform has little endian registers,
the GPIO driver needs this property to read/write registers by
right interface.
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
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Add the "little-endian" property to fix the issue that eSDHC
is not working and dumping out "mmc0: Controller never released
inhibit bit(s)." error messages constantly.
Fixes: 5461597f6ce0 ("dts/ls2080a: Update DTSI to add support of various peripherals")
Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "omap fixes against v4.4-rc4" from Tony Lindgren
Few fixes for omaps for v4.4-rc cycle:
- Fix clock source for ARM TWD and global timers on am437x
- Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of
when MACH_OMAP3_PANDORA is selected
- Fix SPI DMA handles for dm816x as only some were mapped
- Fix up mbox cells for dm816x to make mailbox usable
* tag 'omap-for-v4.4/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: am4372: fix clock source for arm twd and global timers
ARM: OMAP2+: enable REGULATOR_FIXED_VOLTAGE
ARM: dts: add dm816x missing spi DT dma handles
ARM: dts: add dm816x missing #mbox-cells
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ARM TWD and Global timer are clocked by PERIPHCLK which is MPU_CLK/2.
But now they are clocked by dpll_mpu_m2_ck == MPU_CLK and, as result.
Timekeeping core misbehaves. For example, execution of command
"sleep 5" will take 10 sec instead of 5.
Hence, fix it by adding mpu_periphclk ("fixed-factor-clock") and use
it for clocking ARM TWD and Global timer (same way as on OMAP4).
Cc: Tony Lindgren <tony@atomide.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Fixes:commit 8cbd4c2f6a99 ("arm: boot: dts: am4372: add ARM timers and SCU nodes")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Enable REGULATOR_FIXED_VOLTAGE for all OMAP2+ platforms
otherwise system can't boot from SD-card when kernel is
built for single SoC (for example, with CONFIG_SOC_DRA7XX=y only).
It's also required for almost all TI SoC's platforms.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Add the missing SPI controller DMA handler in the dm816x DT
node, only properties for the two channels on four were present.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Add missing #mbox-cells for dm816x mbox DT node.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The recent change to use a pwm lookup table for the ezx machines
was incomplete and only changed the a780 model, but not the
other ones in the same file.
This adds the missing calls to pwm_add_table().
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: c3322022897c ("ARM: pxa: ezx: Use PWM lookup table")
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
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git://git.infradead.org/users/hesselba/linux-berlin into fixes
Merge "Marvell Berlin fixes for 4.4-rc1 (round 1)" from Sebastian Hesselbarth:
- fix wrong SDIO DT clocks on BG2Q
* tag 'berlin-fixes-for-4.4-rc1-1' of git://git.infradead.org/users/hesselba/linux-berlin:
ARM: dts: berlin: add 2nd clock for BG2Q sdhci0 and sdhci1
ARM: dts: berlin: correct BG2Q's sdhci2 2nd clock
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We removed CLK_IGNORE_UNUSED from CLKID_SDIO's flag, so the sdhci0 and
sdhci1 don't work. We fix this by adding the optional 2nd clock for
BG2Q's sdhci0 and sdhci1. This patch brings another benefit: the 2nd
clock can be disabled during runtime pm, so saves power a bit.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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The optional 2nd clock is CLKID_SDIO. We removed CLK_IGNORE_UNUSED
from CLKID_SDIO's flag, so the sdhci2 doesn't work. This patch fixes
this issue by correcting the sdhci2's 2nd clock.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into fixes
Merge "Second fixes for 4.4" from Alexandre Belloni:
- fix of a hardware setup that prevents the sd/mmc interface to show up on
sama5d2.
- proper selection of pinctrl drivers. PIO4 is necessary for the sama5d2 to
boot.
* tag 'at91-4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
ARM: at91: fix pinctrl driver selection
ARM: at91/dt: add always-on to 1.8V regulator
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Move the selection of the pinctrl driver to SoC family level since we
have two pinctrl drivers. It is useless to select one which is not
compatible with the SoC.
[abelloni: fixed pm.c when only sama2d2 is selected]
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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As the SDHCI controller needs the 1.8V line to be always enabled for some eMMC
configurations, set the proper "regulator-always-on" property to the board DTS
files.
Note that the sdhci classical regulator definitions doesn't suit our controller
for this 1.8V purpose.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes
Merge "Fixes for Exynos" from Krzysztof Kozlowski:
1. Fix potential NULL pointer dereference in Exynos PMU driver.
2. Remove incorrect __init annotation from s3c24xx cpufreq driver
structures.
* tag 'samsung-fixes-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
cpufreq: s3c24xx: Do not mark s3c2410_plls_add as __init
ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf
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s3c2410_plls_add is a device notifier that may be called at runtime and
is correctly not marked __init. However it calls s3c_plltab_register()
which is marked __init, and that triggers a build error when we are
checking for section mismatches:
WARNING: vmlinux.o(.text+0x195e0): Section mismatch in reference from the function s3c2410_plls_add() to the function .init.text:s3c_plltab_register()
The function s3c2410_plls_add() references
the function __init s3c_plltab_register().
This is often because s3c2410_plls_add lacks a __init
annotation or the annotation of s3c_plltab_register is wrong.
This removes the __init annotation from s3c2410_plls_add as well as the
__initdata section annotations from s3c2440_plls_12 and s3c2440_plls_169344,
which in turn are referenced from s3c2410_plls_add.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
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If no platform devices binded to the driver but driver itself loaded and
exynos_sys_powerdown_conf is called from
arch/arm/mach-exynos/{suspend.c, pm.c} it will result in NULL pointer access,
to prevent this added check on pmu_context for NULL.
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
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On ixp4xx, the readl() function returns an 'unsigned long' output
when indirect I/O is used. This is unlike any other platform, and
it causes lots of harmless compiler warnings, such as:
drivers/ata/libahci.c: In function 'ahci_show_host_version':
drivers/ata/libahci.c:254:22: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int' [-Wformat=]
drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_hw_read_registers':
drivers/block/mtip32xx/mtip32xx.c:2602:31: warning: format '%X' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int' [-Wformat=]
drivers/block/cciss.c: In function 'print_cfg_table':
drivers/block/cciss.c:3845:25: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long unsigned int' [-Wformat=]
This changes all six of the ixp4xx specific I/O read functions
to return the same types that we have in the normal asm/io.h,
to avoid the warnings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- opal-irqchip: Fix double endian conversion from Alistair Popple
- cxl: Set endianess of kernel contexts from Frederic Barrat
- sbc8641: drop bogus PHY IRQ entries from DTS file from Paul Gortmaker
- Revert "powerpc/eeh: Don't unfreeze PHB PE after reset" from Andrew
Donnellan
* tag 'powerpc-4.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
Revert "powerpc/eeh: Don't unfreeze PHB PE after reset"
powerpc/sbc8641: drop bogus PHY IRQ entries from DTS file
cxl: Set endianess of kernel contexts
powerpc/opal-irqchip: Fix double endian conversion
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This reverts commit 527d10ef3a315d3cb9dc098dacd61889a6c26439.
The reverted commit breaks cxlflash devices following an EEH reset (and
possibly other cxl devices, however this has not been tested).
The reverted commit changed the behaviour of eeh_reset_device() so that PHB
PEs are not unfrozen following the completion of the reset. This should not
be problematic, as no device resources should have been associated with the
PHB PE.
However, when attempting to load the cxlflash driver after a reset, the
driver attempts to read Vital Product Data through a call to
pci_read_vpd() (which is called on the physical cxl device, not on the
virtual AFU device). pci_read_vpd() in turn attempts to read from the cxl
device's config space. This fails, as the PE it's trying to read from is
still frozen. In turn, the driver gets an -ENODEV and fails to initialise.
It appears this issue only affects some parts of the VPD area, as "lspci
-vvv", which only reads a subset of the VPD bytes, is not broken by the
original patch.
At this stage, we don't fully understand why we're trying to read a frozen
PE, and we don't know how this affects other cxl devices. It is possible
that there is an underlying bug in the cxl driver or the powerpc CAPI
support code, or alternatively a bug in the PCI resource allocation/mapping
code that is incorrectly mapping resources to PE#0.
As such, this fix is incomplete, however it is necessary to prevent a
serious regression in CAPI support.
In the meantime, revert the commit, especially as it was intended to be a
non-functional change.
Cc: Gavin Shan <gwshan@linux.vnet.ibm.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Daniel Axtens <dja@axtens.net>
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This file was originally cloned off of the MPC8641D-HPCN reference
platform, which actually had a PHY IRQ line connected. However this
board does not. The bogus entry was largely inert and went undetected
until commit 321beec5047af83db90c88114b7e664b156f49fe ("net: phy: Use
interrupts when available in NOLINK state") was added to the tree.
With the above commit, the board fails to NFS boot since it sits waiting
for a PHY IRQ event that of course never arrives. Removing the bogus
entries from the DTS file fixes the issue.
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The OPAL event calls return a mask of events that are active in big
endian format. This is checked when unmasking the events in the
irqchip by comparison with a cached value. The cached value was stored
in big endian format but should've been converted to CPU endian
first.
This bug leads to OPAL event delivery being delayed or dropped on some
systems. Symptoms may include a non-functional console.
The bug is fixed by calling opal_handle_events(...) instead of
duplicating code in opal_event_unmask(...).
Fixes: 9f0fd0499d30 ("powerpc/powernv: Add a virtual irqchip for opal events")
Cc: stable@vger.kernel.org # v4.2+
Reported-by: Douglas L Lehr <dllehr@us.ibm.com>
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Merge misc fixes from Andrew Morton:
"17 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
MIPS: fix DMA contiguous allocation
sh64: fix __NR_fgetxattr
ocfs2: fix SGID not inherited issue
mm/oom_kill.c: avoid attempting to kill init sharing same memory
drivers/base/memory.c: prohibit offlining of memory blocks with missing sections
tmpfs: fix shmem_evict_inode() warnings on i_blocks
mm/hugetlb.c: fix resv map memory leak for placeholder entries
mm: hugetlb: call huge_pte_alloc() only if ptep is null
kernel: remove stop_machine() Kconfig dependency
mm: kmemleak: mark kmemleak_init prototype as __init
mm: fix kerneldoc on mem_cgroup_replace_page
osd fs: __r4w_get_page rely on PageUptodate for uptodate
MAINTAINERS: make Vladimir co-maintainer of the memory controller
mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress
mm: fix swapped Movable and Reclaimable in /proc/pagetypeinfo
memcg: fix memory.high target
mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
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Recent changes to how GFP_ATOMIC is defined seems to have broken the
condition to use mips_alloc_from_contiguous() in
mips_dma_alloc_coherent().
I couldn't bottom out the exact change but I think it's this commit
d0164adc89f6 ("mm, page_alloc: distinguish between being unable to
sleep, unwilling to sleep and avoiding waking kswapd").
GFP_ATOMIC has multiple bits set and the check for !(gfp & GFP_ATOMIC)
isn't enough.
The reason behind this condition is to check whether we can potentially
do a sleeping memory allocation. Use gfpflags_allow_blocking() instead
which should be more robust.
Signed-off-by: Qais Yousef <qais.yousef@imgtec.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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According to arch/sh/kernel/syscalls_64.S and common sense, __NR_fgetxattr
has to be defined to 259, but it doesn't. Instead, it's defined to 269,
which is of course used by another syscall, __NR_sched_setaffinity in this
case.
This bug was found by strace test suite.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"Fix the boot crash on Mako machines with Huge Pages, prevent a panic
with SATA controllers (and others) by correctly calculating the IOMMU
space, hook up the mlock2 syscall and drop unneeded code in the parisc
pci code"
* 'parisc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Disable huge pages on Mako machines
parisc: Wire up mlock2 syscall
parisc: Remove unused pcibios_init_bus()
parisc iommu: fix panic due to trying to allocate too large region
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Mako-based machines (PA8800 and PA8900 CPUs) don't allow aliasing on
non-equaivalent addresses.
Signed-off-by: Helge Deller <deller@gmx.de>
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Signed-off-by: Helge Deller <deller@gmx.de>
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There are no callers of pcibios_init_bus(), so remove it.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Helge Deller <deller@gmx.de>
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