Applications can pass this flag in to avoid accept thundering herd.
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
poll events should be 32-bits to cover EPOLLEXCLUSIVE.
Explicit word-swap the poll32_events for big endian to make sure the ABI
is not changed. We call this feature IORING_FEAT_POLL_32BITS,
applications who want to use EPOLLEXCLUSIVE should check the feature bit
first.
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The alignment handler selftest needs cache-inhibited memory and
currently /dev/fb0 is relied on to provided this. This prevents running
the test on systems without /dev/fb0 (e.g., mambo). Read the commandline
arguments for an optional path to be used instead, as well as an
optional offset to be for mmaping this path.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Tested-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200520021103.19798-1-jniethe5@gmail.com
The iommu_table_ops::xchg_no_kill() callback updates TCE. It is quite
possible that not entire table is allocated if it is huge and multilevel
so xchg may also allocate subtables. If failed, it returns H_HARDWARE
for failed allocation and H_TOO_HARD if it needs it but cannot do because
the alloc parameter is "false" (set when called with MMU=off to force
retry with MMU=on).
The problem is that having separate errors only matters in real mode
(MMU=off) but the only caller with alloc="false" does not check the exact
error code and simply returns H_TOO_HARD; and for every other mode
alloc is "true". Also, the function is also called from the ioctl()
handler of the VFIO SPAPR TCE IOMMU subdriver which does not expect
hypervisor error codes (H_xxx) and will expose them to the userspace.
This converts wrong error codes to -ENOMEM.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200617003835.48831-1-aik@ozlabs.ru
IS_ENABLED() matches names exactly, so the missing "CONFIG_" prefix
means this code would never be built.
Also fixes a missing newline in pr_warn().
Fixes: 970d54f99c ("powerpc/book3s64/hash: Disable 16M linear mapping size if not aligned")
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/202006050717.A2F9809E@keescook
Since commit cbe46bd4f5 ("powerpc: remove CONFIG_CMDLINE #ifdef mess")
CONFIG_CMDLINE has always had a value regardless of CONFIG_CMDLINE_BOOL.
For example:
$ make ARCH=powerpc defconfig
$ cat .config
# CONFIG_CMDLINE_BOOL is not set
CONFIG_CMDLINE=""
When enabling CONFIG_CMDLINE_BOOL this value is kept making the 'default
"..." if CONFIG_CMDLINE_BOOL' ineffective.
$ ./scripts/config --enable CONFIG_CMDLINE_BOOL
$ cat .config
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE=""
Remove CONFIG_CMDLINE_BOOL and the inaccessible default.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200611224220.25066-2-chris.packham@alliedtelesis.co.nz
blrl is not recommended to use as an indirect function call, as it may
corrupt the link stack predictor.
This is not a performance critical path but this should be fixed for
consistency.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200611121119.1015740-1-npiggin@gmail.com
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Merge tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fixes from Paul Moore:
"Three small patches to fix problems in the SELinux code, all found via
clang.
Two patches fix potential double-free conditions and one fixes an
undefined return value"
* tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix undefined return of cond_evaluate_expr
selinux: fix a double free in cond_read_node()/cond_read_list()
selinux: fix double free
- Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
twice without a unique irqchip struct.
- Use the noirq variants of the suspend and resume callbacks in
the Tegra driver.
- Clean up the errorpath on the MCP23s08 driver.
- Revert the use of devm_of_iomap() in the Freescale driver as
it was regressing the platform.
- Add some missing pins in the Qualcomm IPQ6018 driver.
- Fix a simple documentation bug in the pinctrl-single driver.
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Merge tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some early fixes collected during the first week after the merge
window, all pretty self-evident, with the details below. The revert is
the crucial thing.
- Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
twice without a unique irqchip struct
- Use the noirq variants of the suspend and resume callbacks in the
Tegra driver
- Clean up the errorpath on the MCP23s08 driver
- Revert the use of devm_of_iomap() in the Freescale driver as it was
regressing the platform
- Add some missing pins in the Qualcomm IPQ6018 driver
- Fix a simple documentation bug in the pinctrl-single driver"
* tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: single: fix function name in documentation
pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
pinctrl: mcp23s08: Split to three parts: fix ptr_ret.cocci warnings
pinctrl: tegra: Use noirq suspend/resume callbacks
pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
- fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
- improve cc-option in scripts/Kbuild.include to clean up temp files
- improve cc-option in scripts/Kconfig.include for more reliable compile
option test
- do not copy modules.builtin by 'make install' because it would break
existing systems
- use 'userprogs' syntax for watch_queue sample
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Merge tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
- improve cc-option in scripts/Kbuild.include to clean up temp files
- improve cc-option in scripts/Kconfig.include for more reliable
compile option test
- do not copy modules.builtin by 'make install' because it would break
existing systems
- use 'userprogs' syntax for watch_queue sample
* tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
samples: watch_queue: build sample program for target architecture
Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
scripts: Fix typo in headers_install.sh
kconfig: unify cc-option and as-option
kbuild: improve cc-option to clean up all temporary files
Makefile: Improve compressed debug info support detection
Much like SDM845 each serial engine has 4 pins attached. Add all
possible I2C and SPI nodes for all 20 serial engines.
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20200606131300.3874987-1-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Add the TLMM pinctrl node for SM8250 and reserve pins 28-31 and 40-43 on
the MTP as firmware does not allow Linux to touch these pins.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20200430181716.3797842-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Add temperature alarm and thermal zone configuration to all three
pm8150 instances. Configuration is largely based on the msm-4.19 tree.
These alarms use main adc of the pmic. Separate temperature adc is not
supported yet.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20200621192824.2069145-3-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
One fix for the interrupt rework we did last release which broke KVM-PR.
Three commits fixing some fallout from the READ_ONCE() changes interacting badly
with our 8xx 16K pages support, which uses a pte_t that is a structure of 4
actual PTEs.
A cleanup of the 8xx pte_update() to use the newly added pmd_off().
A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is enabled.
A minor fix for the SPU syscall generation.
Thanks to:
Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike Rapoport,
Nicholas Piggin.
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Merge tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- One fix for the interrupt rework we did last release which broke
KVM-PR
- Three commits fixing some fallout from the READ_ONCE() changes
interacting badly with our 8xx 16K pages support, which uses a pte_t
that is a structure of 4 actual PTEs
- A cleanup of the 8xx pte_update() to use the newly added pmd_off()
- A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
enabled
- A minor fix for the SPU syscall generation
Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
Rapoport, Nicholas Piggin.
* tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/8xx: Provide ptep_get() with 16k pages
mm: Allow arches to provide ptep_get()
mm/gup: Use huge_ptep_get() in gup_hugepte()
powerpc/syscalls: Use the number when building SPU syscall table
powerpc/8xx: use pmd_off() to access a PMD entry in pte_update()
powerpc/64s: Fix KVM interrupt using wrong save area
powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
This userspace program includes UAPI headers exported to usr/include/.
'make headers' always works for the target architecture (i.e. the same
architecture as the kernel), so the sample program should be built for
the target as well. Kbuild now supports 'userprogs' for that.
I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
$(CC) may not provide libc.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This reverts commit e0b250b57d,
which broke build systems that need to install files to a certain
path, but do not set INSTALL_MOD_PATH when invoking 'make install'.
$ make INSTALL_PATH=/tmp/destdir install
mkdir: cannot create directory ‘/lib/modules/5.8.0-rc1+/’: Permission denied
Makefile:1342: recipe for target '_builtin_inst_' failed
make: *** [_builtin_inst_] Error 1
While modules.builtin is useful also for CONFIG_MODULES=n, this change
in the behavior is quite unexpected. Maybe "make modules_install"
can install modules.builtin irrespective of CONFIG_MODULES as Jonas
originally suggested.
Anyway, that commit should be reverted ASAP.
Reported-by: Douglas Anderson <dianders@chromium.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
The GIC driver uses a RMW sequence to update the affinity, and
relies on the gic_lock_irqsave/gic_unlock_irqrestore sequences
to update it atomically.
But these sequences only expand into anything meaningful if
the BL_SWITCHER option is selected, which almost never happens.
It also turns out that using a RMW and locks is just as silly,
as the GIC distributor supports byte accesses for the GICD_TARGETRn
registers, which when used make the update atomic by definition.
Drop the terminally broken code and replace it by a byte write.
Fixes: 04c8b0f82c ("irqchip/gic: Make locking a BL_SWITCHER only feature")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Anup originally re-spun his patch set to include this fix, but it was a bit too
late for my PR so I've split it out.
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200611175302.253540-1-palmer@dabbelt.com
readx_poll_timeout() can sleep if @sleep_us is specified by the caller,
and is therefore unsafe to be used inside the atomic context, which is
this case when we use it to poll the GICR_VPENDBASER.Dirty bit in
irq_set_vcpu_affinity() callback.
Let's convert to its atomic version instead which helps to get the v4.1
board back to life!
Fixes: 96806229ca ("irqchip/gic-v4.1: Add support for VPENDBASER's Dirty+Valid signaling")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200605052345.1494-1-yuzenghui@huawei.com
Every hwspinlock driver is expected to depend on the
hwspinlock core, so it's possible to simplify the
Kconfig, factoring out the HWSPINLOCK dependency.
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: https://lore.kernel.org/r/20200414220943.6203-1-ezequiel@collabora.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
sm8150 has 27 thermal sensors split across two tsens controllers. Add
the thermal zones to expose them and wireup the cpus to throttle their
frequencies on crossing passive temperature thresholds.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Link: https://lore.kernel.org/r/1cdbebe6f7f69ccd8468a4138b56e8a200289d95.1591684754.git.amit.kucheria@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Add nodes for the network-on-chip interconnect buses present on
MSM8916-based platforms.
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Link: https://lore.kernel.org/r/20200617134515.25229-1-georgi.djakov@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
apq8016-sbc.dtsi uses spaces on some lines instead of tabs.
Make this consistent by converting them to tabs.
Also remove some redundant comments from the DAI link definitions
- this is already visible from the comment block before the "sound"
node or the device node entries itself.
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200605185916.318494-4-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
msm8916-pins.dtsi specifies "bias-pull-none" for most of the audio
pin configurations. This was likely copied from the qcom kernel fork
where the same property was used for these audio pins.
However, "bias-pull-none" actually does not exist at all - not in
mainline and not in downstream. I can only guess that the original
intention was to configure "no pull", i.e. bias-disable.
Change it to that instead.
Fixes: 143bb9ad85 ("arm64: dts: qcom: add audio pinctrls")
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200605185916.318494-2-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
As of commit 4ff028f6c1 ("ASoC: qcom: lpass-cpu: Make I2S SD lines
configurable"), lpass now supports children nodes to configure the
MI2S SD lines to use for one of the I2S ports. For example:
lpass@7708000 {
dai@3 {
reg = <MI2S_QUATERNARY>;
qcom,playback-sd-lines = <1>;
};
};
The "reg" property refers to the DAI number in this case,
so we need to set #address-cells and #size-cells appropriately
to avoid DTC warnings.
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200605185916.318494-1-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
By specifying the modem firmware files, we can boot the modem subsystem
which also gives us wifi.
Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Link: https://lore.kernel.org/r/20200528185341.4891-1-jeffrey.l.hugo@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
