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dev_pm_genpd_set_performance_state() may fail, so had better to check it's
return value before decreasing priv->enable_counter.
Fixes: bf3a28cf42 ("regulator: fixed: support using power domain for enable/disable")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210520111811.1806293-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Return -EINVAL if ramp_delay_table is NULL.
Also add WARN_ON since the driver code needs fix if this happened.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210519132255.1683863-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
-EINVAL is not a valid return value for .of_map_mode, return
REGULATOR_MODE_INVALID instead.
Fixes: 65ac97042d ("regulator: da9121: add mode support")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
Link: https://lore.kernel.org/r/20210517052721.1063375-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The tcs4525 voltage calculation is incorrect, which leads to a deadlock
on the rk3566-quartz64 board when loading cpufreq.
Fix the voltage calculation to correct the deadlock.
While we are at it, add a safety check and clean up the function names
to be more accurate.
Peter Geis (3):
regulator: fan53555: fix TCS4525 voltage calulation
regulator: fan53555: only bind tcs4525 to correct chip id
regulator: fan53555: fix tcs4525 function names
drivers/regulator/fan53555.c | 44 ++++++++++++++++++++++--------------
1 file changed, 27 insertions(+), 17 deletions(-)
--
2.25.1
The TCS4525 has 128 voltage steps. With the calculation set to 127 the
most significant bit is disregarded which leads to a miscalculation of
the voltage by about 200mv.
Fix the calculation to end deadlock on the rk3566-quartz64 which uses
this as the cpu regulator.
Fixes: 914df8faa7 ("regulator: fan53555: Add TCS4525 DCDC support")
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20210511211335.2935163-2-pgwipeout@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a compatible string to support TCS4525/TCS4526 devices,
which are compatible with Fairchild FAN53555 regulators.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: https://lore.kernel.org/r/20210421210338.43819-2-ezequiel@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The jiffies-based off_on_delay implementation has a couple of problems
that cause it to sometimes not actually delay for the required time:
(1) If, for example, the off_on_delay time is equivalent to one jiffy,
and the ->last_off_jiffy is set just before a new jiffy starts,
then _regulator_do_enable() does not wait at all since it checks
using time_before().
(2) When jiffies overflows, the value of "remaining" becomes higher
than "max_delay" and the code simply proceeds without waiting.
Fix these problems by changing it to use ktime_t instead.
[Note that since jiffies doesn't start at zero but at INITIAL_JIFFIES
("-5 minutes"), (2) above also led to the code not delaying if
the first regulator_enable() is called when the ->last_off_jiffy is not
initialised, such as for regulators with ->constraints->boot_on set.
It's not clear to me if this was intended or not, but I've preserved
this behaviour explicitly with the check for a non-zero ->last_off.]
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20210423114524.26414-1-vincent.whitchurch@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We currently do not respect off_on_delay the first time we turn on a
regulator. This is problematic since the regulator could have been
turned off by the bootloader, or it could it have been turned off during
the probe of the regulator driver (such as when regulator-fixed requests
the enable GPIO), either of which could potentially have happened less
than off_on_delay microseconds ago before the first time a client
requests for the regulator to be turned on.
We can't know exactly when the regulator was turned off, but initialise
off_on_delay to the current time when registering the regulator, so that
we guarantee that we respect the off_on_delay in all cases.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20210422083044.11479-1-vincent.whitchurch@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Hi,
The Samsung PMIC drivers since long time are used only on devicetree
platforms (Samsung Exynos) and there are no users with board files.
Drop the support for board files entirely and depend on OF for matching.
This makes the code smaller and simpler.
Dependencies
============
The MFD pieces are rebased on my previous sec-core dirver changes:
mfd: sec: Simplify getting of_device_id match data
https://lore.kernel.org/linux-samsung-soc/20210420113929.278082-1-krzysztof.kozlowski@canonical.com/T/#t
Applying - can be independent
=============================
The last RTC and regulator patches can be picked up independently via
regulator and rtc trees. There are no board files currently, so the
code in these drivers is basically dead code and feature-bisection is
preserved.
Best regards,
Krzysztof
Krzysztof Kozlowski (9):
mfd: sec: Drop support for board files and require devicetree
mfd: sec: Remove unused cfg_pmic_irq in platform data
mfd: sec: Remove unused device_type in platform data
mfd: sec: Remove unused irq_base in platform data
mfd: sec: Enable wakeup from suspend via devicetree property
mfd: sec: Remove unused platform data members
rtc: s5m: Remove reference to parent's device pdata
regulator: s2mpa01: Drop initialization via platform data
regulator: s2mps11: Drop initialization via platform data
drivers/mfd/Kconfig | 1 +
drivers/mfd/sec-core.c | 64 +++++---------------------------
drivers/mfd/sec-irq.c | 4 +-
drivers/regulator/s2mpa01.c | 4 --
drivers/regulator/s2mps11.c | 22 +----------
drivers/rtc/rtc-s5m.c | 6 ---
include/linux/mfd/samsung/core.h | 33 ----------------
7 files changed, 14 insertions(+), 120 deletions(-)
--
2.25.1
s/regulator may on/regulator may already be enabled/
s/or left on/or was left on/
The aim of this patch is to make the comment more readable and to make
it clear, that this is about a regulator, that is already enabled instead
of a regulator that may be switched on.
Signed-off-by: Sebastian Fricke <sebastian.fricke@posteo.net>
Link: https://lore.kernel.org/r/20210421055236.13148-1-sebastian.fricke@posteo.net
Signed-off-by: Mark Brown <broonie@kernel.org>
'for_each_available_child_of_node()' already performs an 'of_node_get()'
on child, so there is no need to perform another one before returning.
Otherwise, a double 'get' is performed and a resource may never be
released.
Fixes: 925c85e21e ("regulator: Factor out location of init data OF node")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/a79f0068812b89ff412d572a1171f22109c24132.1618947049.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch fixes identification of DA913x parts by the DA9121 driver,
where a lack of clarity lead to implementation on the basis that variant
IDs were to be identical to the equivalent rated non-automotive parts.
There is a new emphasis on the DT identity to cope with overlap in these
ID's - this is not considered to be problematic, because projects would
be exclusively using automotive or consumer grade parts.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
Link: https://lore.kernel.org/r/20210421120306.DB5B880007F@slsrvapps-01.diasemi.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Patch series introducing support for ROHM BD71815 PMIC
ROHM BD71815 is a power management IC used in some battery powered
systems. It contains regulators, GPO(s), charger + coulomb counter, RTC
and a clock gate.
All regulators can be controlled via I2C. LDO4 can additionally be set to
be enabled/disabled by a GPIO. LDO3 voltage could be selected from two
voltages written into separate VSEL reisters using GPIO but this mode is
not supported by driver. On top of that the PMIC has the typical HW
state machine which is present also on many other ROHM PMICs.
IC contains two GPOs - but one of the GPOs is marked as GND in
data-sheet. Thus the driver by default only exposes one GPO. The second
GPO can be enabled by special DT property.
RTC is almost similar to what is on BD71828. For currently used features
only the register address offset to RTC block differs.
The charger driver is not included in this series. ROHM has a charger
driver with some fuel-gauging logig written in but this is not included
here. I am working on separating the logic from HW specific driver and
supporting both BD71815 and BD71828 chargers in separate patch series.
Changelog v5:
Regulator:
- Added regmap helper for regulator ramp-delay and taken it in use
(patches 13, 14, 16 - they can be just dropped if ramp-delay helper is not
a good idea. Patch 15 implements old-fashioned ramp-delay)
GPIO:
- styling changes to GPIO (Mostly suggested by Andy)
- implemented init_valid_mask (but can't count on it yet)
Changelog v4:
- Sorted ROHM chip ID enum
- Statcized DVS structures in regulator driver
- Minor styling for regulator driver
- rebased on v5.12-rc4
Changelog v3:
- GPIO clean-up as suggested by Bartosz
- MFD clean-up as suggested by Lee
- clk-mode dt-binding handling in MFD driver corrected to reflect new
property values.
- Dropped already applied patches
- Rebased on v5.12-rc2
Changelog v2:
- Rebased on top of v5.11-rc3
- Added another "preliminary patch" which fixes HW-dvs voltage
handling (patch 1)
- split regulator patch to two.
- changed dt-binding patch ordering.
regulators:
- staticized probe
- removed some unnecessary defines
- updated comments
- split rohm-regulator patch adding SNVS and supporting simple
linear mapping into two - one adding support for mapping, other
adding SNVS.
GPIO:
- removed unnecessary headers
- clarified dev/parent->dev usage
- removed forgotten #define DEBUG
dt-bindings:
- changed patch order to meet ref-dependencies
- added missing regulator nodes
- changed string property for clk mode to tristated
MFD:
- header cleanups.
CLK:
- fixed commit message
--
Matti Vaittinen (19):
rtc: bd70528: Do not require parent data
mfd: bd718x7: simplify by cleaning unnecessary device data
dt_bindings: bd71828: Add clock output mode
dt_bindings: regulator: Add ROHM BD71815 PMIC regulators
dt_bindings: mfd: Add ROHM BD71815 PMIC
mfd: Add ROHM BD71815 ID
mfd: Sort ROHM chip ID list for better readability
mfd: Support for ROHM BD71815 PMIC core
gpio: support ROHM BD71815 GPOs
regulator: helpers: Export helper voltage listing
regulator: rohm-regulator: linear voltage support
regulator: rohm-regulator: Support SNVS HW state.
regulator: Add regmap helper for ramp-delay setting
regulator: bd718x7, bd71828: Use ramp-delay helper
regulator: Support ROHM BD71815 regulators
regulator: bd71815: use ramp-delay helper
clk: bd718x7: Add support for clk gate on ROHM BD71815 PMIC
rtc: bd70528: Support RTC on ROHM BD71815
MAINTAINERS: Add ROHM BD71815AGW
.../bindings/mfd/rohm,bd71815-pmic.yaml | 201 ++++++
.../bindings/mfd/rohm,bd71828-pmic.yaml | 6 +
.../regulator/rohm,bd71815-regulator.yaml | 116 ++++
MAINTAINERS | 3 +
drivers/clk/clk-bd718x7.c | 9 +-
drivers/gpio/Kconfig | 10 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-bd71815.c | 193 ++++++
drivers/mfd/Kconfig | 15 +-
drivers/mfd/rohm-bd71828.c | 486 +++++++++----
drivers/mfd/rohm-bd718x7.c | 43 +-
drivers/regulator/Kconfig | 11 +
drivers/regulator/Makefile | 1 +
drivers/regulator/bd71815-regulator.c | 651 ++++++++++++++++++
drivers/regulator/bd71828-regulator.c | 51 +-
drivers/regulator/bd718x7-regulator.c | 60 +-
drivers/regulator/helpers.c | 101 ++-
drivers/regulator/rohm-regulator.c | 23 +-
drivers/rtc/Kconfig | 6 +-
drivers/rtc/rtc-bd70528.c | 104 +--
include/linux/mfd/rohm-bd71815.h | 562 +++++++++++++++
include/linux/mfd/rohm-bd71828.h | 3 +
include/linux/mfd/rohm-bd718x7.h | 13 -
include/linux/mfd/rohm-generic.h | 15 +-
include/linux/regulator/driver.h | 7 +
25 files changed, 2393 insertions(+), 298 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml
create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd71815-regulator.yaml
create mode 100644 drivers/gpio/gpio-bd71815.c
create mode 100644 drivers/regulator/bd71815-regulator.c
create mode 100644 include/linux/mfd/rohm-bd71815.h
base-commit: 0d02ec6b31
--
2.25.4
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
Some drivers need to translate voltage values to selectors prior regulator
registration. Currently a regulator_desc based list_voltages helper is only
exported for regulators using the linear_ranges. Export similar helper also
for regulators using simple linear mapping.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/1200ef7a50c84327ada019b85f6527b4fc9b5ce1.1617020713.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add support for PM7325/PMR735A regulators. This ensures
that consumers are able to modify the physical state of PMIC
regulators.
Signed-off-by: satya priya <skakit@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/1617192339-3760-3-git-send-email-skakit@codeaurora.org
Signed-off-by: Mark Brown <broonie@kernel.org>
fixes coccicheck warning:
drivers/regulator/mt6360-regulator.c:384:3-10: line 384 is
redundant because platform_get_irq() already prints an error
in fact it is not platform_get_irq but platform_get_irq_byname print error
Signed-off-by: Jian Dong <dongjian@yulong.com>
Link: https://lore.kernel.org/r/1616555474-158789-1-git-send-email-dj0227@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Miscellaneous ext4 bug fixes for v5.12"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: initialize ret to suppress smatch warning
ext4: stop inode update before return
ext4: fix rename whiteout with fast commit
ext4: fix timer use-after-free on failed mount
ext4: fix potential error in ext4_do_update_inode
ext4: do not try to set xattr into ea_inode if value is empty
ext4: do not iput inode under running transaction in ext4_rename()
ext4: find old entry again if failed to rename whiteout
ext4: fix error handling in ext4_end_enable_verity()
ext4: fix bh ref count on error paths
fs/ext4: fix integer overflow in s_log_groups_per_flex
ext4: add reclaim checks to xattr code
ext4: shrink race window in ext4_should_retry_alloc()
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Merge tag 'io_uring-5.12-2021-03-21' of git://git.kernel.dk/linux-block
Pull io_uring followup fixes from Jens Axboe:
- The SIGSTOP change from Eric, so we properly ignore that for
PF_IO_WORKER threads.
- Disallow sending signals to PF_IO_WORKER threads in general, we're
not interested in having them funnel back to the io_uring owning
task.
- Stable fix from Stefan, ensuring we properly break links for short
send/sendmsg recv/recvmsg if MSG_WAITALL is set.
- Catch and loop when needing to run task_work before a PF_IO_WORKER
threads goes to sleep.
* tag 'io_uring-5.12-2021-03-21' of git://git.kernel.dk/linux-block:
io_uring: call req_set_fail_links() on short send[msg]()/recv[msg]() with MSG_WAITALL
io-wq: ensure task is running before processing task_work
signal: don't allow STOP on PF_IO_WORKER threads
signal: don't allow sending any signals to PF_IO_WORKER threads
Here are some small staging and IIO driver fixes for 5.12-rc4.
They include:
- MAINTAINERS changes for the move of the staging mailing list
- comedi driver fixes to get request_irq() to work correctly
- counter driver fixes for reported issues with iio devices
- tiny iio driver fixes for reported issues.
All of these have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
"Some small staging and IIO driver fixes:
- MAINTAINERS changes for the move of the staging mailing list
- comedi driver fixes to get request_irq() to work correctly
- counter driver fixes for reported issues with iio devices
- tiny iio driver fixes for reported issues.
All of these have been in linux-next with no reported problems"
* tag 'staging-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: vt665x: fix alignment constraints
staging: comedi: cb_pcidas64: fix request_irq() warn
staging: comedi: cb_pcidas: fix request_irq() warn
MAINTAINERS: move the staging subsystem to lists.linux.dev
MAINTAINERS: move some real subsystems off of the staging mailing list
iio: gyro: mpu3050: Fix error handling in mpu3050_trigger_handler
iio: hid-sensor-temperature: Fix issues of timestamp channel
iio: hid-sensor-humidity: Fix alignment issue of timestamp channel
counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register
counter: stm32-timer-cnt: fix ceiling write max value
counter: stm32-timer-cnt: Report count function when SLAVE_MODE_DISABLED
iio: adc: ab8500-gpadc: Fix off by 10 to 3
iio:adc:stm32-adc: Add HAS_IOMEM dependency
iio: adis16400: Fix an error code in adis16400_initial_setup()
iio: adc: adi-axi-adc: add proper Kconfig dependencies
iio: adc: ad7949: fix wrong ADC result due to incorrect bit mask
iio: hid-sensor-prox: Fix scale not correct issue
iio:adc:qcom-spmi-vadc: add default scale to LR_MUX2_BAT_ID channel
Here are some small Thunderbolt and USB driver fixes for some reported
issues:
- thunderbolt fixes for minor problems
- typec fixes for power issues
- usb-storage quirk addition
- usbip bugfix
- dwc3 bugfix when stopping transfers
- cdnsp bugfix for isoc transfers
- gadget use-after-free fix
All have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB and Thunderbolt driver fixes from Greg KH:
"Here are some small Thunderbolt and USB driver fixes for some reported
issues:
- thunderbolt fixes for minor problems
- typec fixes for power issues
- usb-storage quirk addition
- usbip bugfix
- dwc3 bugfix when stopping transfers
- cdnsp bugfix for isoc transfers
- gadget use-after-free fix
All have been in linux-next this week with no reported issues"
* tag 'usb-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tcpm: Skip sink_cap query only when VDM sm is busy
usb: dwc3: gadget: Prevent EP queuing while stopping transfers
usb: typec: tcpm: Invoke power_supply_changed for tcpm-source-psy-
usb: typec: Remove vdo[3] part of tps6598x_rx_identity_reg struct
usb-storage: Add quirk to defeat Kindle's automatic unload
usb: gadget: configfs: Fix KASAN use-after-free
usbip: Fix incorrect double assignment to udc->ud.tcp_rx
usb: cdnsp: Fixes incorrect value in ISOC TRB
thunderbolt: Increase runtime PM reference count on DP tunnel discovery
thunderbolt: Initialize HopID IDAs in tb_switch_alloc()
plus a DocBook fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2021-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
"A change to robustify force-threaded IRQ handlers to always disable
interrupts, plus a DocBook fix.
The force-threaded IRQ handler change has been accelerated from the
normal schedule of such a change to keep the bad pattern/workaround of
spin_lock_irqsave() in handlers or IRQF_NOTHREAD as a kludge from
spreading"
* tag 'irq-urgent-2021-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Disable interrupts for force threaded handlers
genirq/irq_sim: Fix typos in kernel doc (fnode -> fwnode)
- another missing RT_PROP table related fix, to ensure that the efivarfs
pseudo filesystem fails gracefully if variable services are unsupported,
- use the correct alignment for literal EFI GUIDs,
- fix a use after unmap issue in the memreserve code
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-urgent-2021-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
- another missing RT_PROP table related fix, to ensure that the
efivarfs pseudo filesystem fails gracefully if variable services
are unsupported
- use the correct alignment for literal EFI GUIDs
- fix a use after unmap issue in the memreserve code
* tag 'efi-urgent-2021-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: use 32-bit alignment for efi_guid_t literals
firmware/efi: Fix a use after bug in efi_mem_reserve_persistent
efivars: respect EFI_UNSUPPORTED return from firmware
devicetree-node lookups.
- Restore the IRQ2 ignore logic
- Fix get_nr_restart_syscall() to return the correct restart syscall number.
Split in a 4-patches set to avoid kABI breakage when backporting to dead
kernels.
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Merge tag 'x86_urgent_for_v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"The freshest pile of shiny x86 fixes for 5.12:
- Add the arch-specific mapping between physical and logical CPUs to
fix devicetree-node lookups
- Restore the IRQ2 ignore logic
- Fix get_nr_restart_syscall() to return the correct restart syscall
number. Split in a 4-patches set to avoid kABI breakage when
backporting to dead kernels"
* tag 'x86_urgent_for_v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic/of: Fix CPU devicetree-node lookups
x86/ioapic: Ignore IRQ2 again
x86: Introduce restart_block->arch_data to remove TS_COMPAT_RESTART
x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall()
x86: Move TS_COMPAT back to asm/thread_info.h
kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()
Fix a possible stack corruption and subsequent DLPAR failure in the rpadlpar_io
PCI hotplug driver.
Two build fixes for uncommon configurations.
Thanks to Christophe Leroy, Tyrel Datwyler.
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Merge tag 'powerpc-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix a possible stack corruption and subsequent DLPAR failure in the
rpadlpar_io PCI hotplug driver
- Two build fixes for uncommon configurations
Thanks to Christophe Leroy and Tyrel Datwyler.
* tag 'powerpc-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
PCI: rpadlpar: Fix potential drc_name corruption in store functions
powerpc: Force inlining of cpu_has_feature() to avoid build failure
powerpc/vdso32: Add missing _restgpr_31_x to fix build failure
Without that it's not safe to use them in a linked combination with
others.
Now combinations like IORING_OP_SENDMSG followed by IORING_OP_SPLICE
should be possible.
We already handle short reads and writes for the following opcodes:
- IORING_OP_READV
- IORING_OP_READ_FIXED
- IORING_OP_READ
- IORING_OP_WRITEV
- IORING_OP_WRITE_FIXED
- IORING_OP_WRITE
- IORING_OP_SPLICE
- IORING_OP_TEE
Now we have it for these as well:
- IORING_OP_SENDMSG
- IORING_OP_SEND
- IORING_OP_RECVMSG
- IORING_OP_RECV
For IORING_OP_RECVMSG we also check for the MSG_TRUNC and MSG_CTRUNC
flags in order to call req_set_fail_links().
There might be applications arround depending on the behavior
that even short send[msg]()/recv[msg]() retuns continue an
IOSQE_IO_LINK chain.
It's very unlikely that such applications pass in MSG_WAITALL,
which is only defined in 'man 2 recvmsg', but not in 'man 2 sendmsg'.
It's expected that the low level sock_sendmsg() call just ignores
MSG_WAITALL, as MSG_ZEROCOPY is also ignored without explicitly set
SO_ZEROCOPY.
We also expect the caller to know about the implicit truncation to
MAX_RW_COUNT, which we don't detect.
cc: netdev@vger.kernel.org
Link: https://lore.kernel.org/r/c4e1a4cc0d905314f4d5dc567e65a7b09621aab3.1615908477.git.metze@samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Mark the current task as running if we need to run task_work from the
io-wq threads as part of work handling. If that is the case, then return
as such so that the caller can appropriately loop back and reset if it
was part of a going-to-sleep flush.
Fixes: 3bfe610669 ("io-wq: fork worker threads from original task")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Just like we don't allow normal signals to IO threads, don't deliver a
STOP to a task that has PF_IO_WORKER set. The IO threads don't take
signals in general, and have no means of flushing out a stop either.
Longer term, we may want to look into allowing stop of these threads,
as it relates to eg process freezing. For now, this prevents a spin
issue if a SIGSTOP is delivered to the parent task.
Reported-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
They don't take signals individually, and even if they share signals with
the parent task, don't allow them to be delivered through the worker
thread. Linux does allow this kind of behavior for regular threads, but
it's really a compatability thing that we need not care about for the IO
threads.
Reported-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch adds rename whiteout support in fast commits. Note that the
whiteout object that gets created is actually char device. Which
imples, the function ext4_inode_journal_mode(struct inode *inode)
would return "JOURNAL_DATA" for this inode. This has a consequence in
fast commit code that it will make creation of the whiteout object a
fast-commit ineligible behavior and thus will fall back to full
commits. With this patch, this can be observed by running fast commits
with rename whiteout and seeing the stats generated by ext4_fc_stats
tracepoint as follows:
ext4_fc_stats: dev 254:32 fc ineligible reasons:
XATTR:0, CROSS_RENAME:0, JOURNAL_FLAG_CHANGE:0, NO_MEM:0, SWAP_BOOT:0,
RESIZE:0, RENAME_DIR:0, FALLOC_RANGE:0, INODE_JOURNAL_DATA:16;
num_commits:6, ineligible: 6, numblks: 3
So in short, this patch guarantees that in case of rename whiteout, we
fall back to full commits.
Amir mentioned that instead of creating a new whiteout object for
every rename, we can create a static whiteout object with irrelevant
nlink. That will make fast commits to not fall back to full
commit. But until this happens, this patch will ensure correctness by
falling back to full commits.
Fixes: 8016e29f43 ("ext4: fast commit recovery path")
Cc: stable@kernel.org
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20210316221921.1124955-1-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When filesystem mount fails because of corrupted filesystem we first
cancel the s_err_report timer reminding fs errors every day and only
then we flush s_error_work. However s_error_work may report another fs
error and re-arm timer thus resulting in timer use-after-free. Fix the
problem by first flushing the work and only after that canceling the
s_err_report timer.
Reported-by: syzbot+628472a2aac693ab0fcd@syzkaller.appspotmail.com
Fixes: 2d01ddc866 ("ext4: save error info to sb through journal if available")
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210315165906.2175-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If set_large_file = 1 and errors occur in ext4_handle_dirty_metadata(),
the error code will be overridden, go to out_brelse to avoid this
situation.
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Link: https://lore.kernel.org/r/20210312065051.36314-1-luoshijie1@huawei.com
Cc: stable@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Syzbot report a warning that ext4 may create an empty ea_inode if set
an empty extent attribute to a file on the file system which is no free
blocks left.
WARNING: CPU: 6 PID: 10667 at fs/ext4/xattr.c:1640 ext4_xattr_set_entry+0x10f8/0x1114 fs/ext4/xattr.c:1640
...
Call trace:
ext4_xattr_set_entry+0x10f8/0x1114 fs/ext4/xattr.c:1640
ext4_xattr_block_set+0x1d0/0x1b1c fs/ext4/xattr.c:1942
ext4_xattr_set_handle+0x8a0/0xf1c fs/ext4/xattr.c:2390
ext4_xattr_set+0x120/0x1f0 fs/ext4/xattr.c:2491
ext4_xattr_trusted_set+0x48/0x5c fs/ext4/xattr_trusted.c:37
__vfs_setxattr+0x208/0x23c fs/xattr.c:177
...
Now, ext4 try to store extent attribute into an external inode if
ext4_xattr_block_set() return -ENOSPC, but for the case of store an
empty extent attribute, store the extent entry into the extent
attribute block is enough. A simple reproduce below.
fallocate test.img -l 1M
mkfs.ext4 -F -b 2048 -O ea_inode test.img
mount test.img /mnt
dd if=/dev/zero of=/mnt/foo bs=2048 count=500
setfattr -n "user.test" /mnt/foo
Reported-by: syzbot+98b881fdd8ebf45ab4ae@syzkaller.appspotmail.com
Fixes: 9c6e7853c5 ("ext4: reserve space for xattr entries/names")
Cc: stable@kernel.org
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Link: https://lore.kernel.org/r/20210305120508.298465-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In ext4_rename(), when RENAME_WHITEOUT failed to add new entry into
directory, it ends up dropping new created whiteout inode under the
running transaction. After commit <9b88f9fb0d2> ("ext4: Do not iput inode
under running transaction"), we follow the assumptions that evict() does
not get called from a transaction context but in ext4_rename() it breaks
this suggestion. Although it's not a real problem, better to obey it, so
this patch add inode to orphan list and stop transaction before final
iput().
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Link: https://lore.kernel.org/r/20210303131703.330415-2-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
