Pull char/misc/IIO/etc driver updates from Greg KH:
"Here is the big set of char, misc, iio, counter, fpga, and other small
driver subsystems for 7.3-rc1.
Overall, due to some driver removals we only added a bit more code
than removed, which was a nice change. Highlights in this merge
request are:
- Loads of IIO driver updates and additions
- binder driver updates (more on that below...)
- Removal of the SGI XP and GRU drivers as they are not used anymore
and turn out to be pretty insecure overall
- Removal of the obsolete ibmasm driver as it's not being used
anymore
- Coresight driver updates and additions
- Mei driver udpates
- Counter driver updates
- FPGA driver updates
- ICC driver updates
- lots and lots of other tiny driver updates to resolve reported
issues
All of these have been in linux-next for a while"
* tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits)
iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
iio: adc: pac1921: fix wrong channel used in trigger handler read
iio: light: gp2ap002: re-enable irq if runtime suspend fails
iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
iio: light: apds9306: fix PM reference leak in apds9306_read_data()
iio: gyro: mpu3050: fix sign of raw angular velocity readings
iio: srf04: fix pm_runtime handling on probe error path
iio: adc: ad4080: configure backend data size
iio: adc: adi-axi-adc: add data size support for AD408X backend
iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
iio: dac: ad5446: fix OF module device table
iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
iio: light: opt4001: Reject integration times with a non-zero seconds part
iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
iio: light: opt4001: Fix power down clearing bits of the wrong register
iio: light: opt4060: Fix incorrect register name in threshold read error message
iio: light: opt4060: Fix pointer type passed to div_u64_rem()
iio: light: opt4060: Reject integration times with a non-zero seconds part
iio: light: ltrf216a: fix runtime PM reference leak in error path
iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
...
FSL SOC Changes for 7.3
Freescale QUICC Engine:
- Use generic I/O helpers in interrupt controller for IO Ports
- Move CONFIG_QE_GPIO out of powerpc
- Fix DT scan for GPIO nodes
- Convert IO ports interrupt controller to generic IRQ chip
- Add support of IRQs in GPIO controller
- Implement get_direction() in GPIO controller
- Check platform_driver_register() in interrupt controller for IO Ports
Data Path I/O:
- Replace maintainer
- Remove redundant dev_err()
- Fix kernel-doc typos
Freescale Management Complex:
- Use strscpy() to copy strings into arrays
- Remove redundant dev_err()
- Drop unused assignment of acpi_device_id::driver_data
Other changes:
- Add kernel and device tree binding support for RCW override,
completing the SerDes PHY driver functionality
- Fix kernel-doc warnings and typos in DPAA header
* tag 'soc_fsl-7.3-1' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux: (31 commits)
bus: fsl-mc: drop unused assignment of acpi_device_id::driver_data
soc: fsl: qe: check platform_driver_register() in qe_ic_of_init()
phy: lynx-10g: use RCW override procedure for dynamic protocol change
soc: fsl: guts: implement the RCW override procedure
dt-bindings: fsl: layerscape-dcfg: define DCFG_DCSR region
soc: fsl: guts: make fsl_soc_data available after fsl_guts_init()
soc: fsl: guts: make it easier to determine on which SoC we are running
soc: fsl: guts: add a central fsl_guts_read() function
soc: fsl: guts: add a global structure to hold state
soc: fsl: guts: use a macro to encode the DCFG CCSR space
soc: fsl: guts: perform fsl_guts_init() error teardown in reverse order of setup
soc: fsl: dpio: fix kernel-doc typos
soc: fsl: fix kernel-doc warnings and typos
bus: fsl-mc: Remove redundant dev_err()
soc: fsl: qe: Add support of IRQs in QE GPIO
soc: fsl: qe: Rename irq variable to parent_irq
soc: fsl: qe: Convert to generic IRQ chip
soc: fsl: qe: Handle spurious interrupts
soc: fsl: qe: Iterate over all pending interrupts in cascade handler
soc: fsl: qe: Use generic_handle_domain_irq()
...
Signed-off-by: Arnd Bergmann <[email protected]>
Manivannan writes:
MHI Host
--------
- Add SAHARA channel support in the pci_generic driver for Foxconn products.
This allows capturing crashdump (ramdump) using the in-kernel sahara client
driver.
- Add support for devices with no M3 state. Some devices do not support the
M3 power state due to hardware issues. For those devices, MHI bus will now
run the full host-side suspend/resume sequence but skip the device-side
M3/M0 handshake, so any transfer queued by clients during suspend is
deferred until resume.
- Set 'mhi_cntrl->no_m3' flag in the pci_generic driver for the QDU100 device
so that the MHI bus also skips the M3 transition during system suspend.
Earlier, the flag was only used to disable runtime PM, but the system
suspend path was still transitioning the device to M3.
- Fix sys error transition latency by polling for the state transition in
mhi_pm_sys_error_transition() instead of waiting up to 24 seconds for an
interrupt from the device. Since a device that has been reset (e.g., via
AT!RESET) is not guaranteed to raise one.
- Flush the posted write after writing to MHI_SOC_RESET_REQ_OFFSET in
mhi_soc_reset() so that the reset actually reaches the device before the
caller's post-reset delay begins.
- Fix controller cleanup on EDL sysfs failure in mhi_register_controller().
The error path was leaving the device registered when sysfs_create_file()
failed.
MHI Endpoint
------------
- Add mhi_cntrl->flush_async() callback to drain the in-flight async DMA
read/write operations issued through the MHI controller driver. This is
used by the MHI EP stack before disconnect to avoid UAF where a late DMA
completion could invoke a now-invalid xfer_cb().
- Implement the flush_async() callback in the PCI EPF MHI controller driver
by waiting for the in-flight DMA operations to complete and then flushing
the DMA workqueue. Since I'm the maintainer for this PCI EPF driver, I'm
taking this patch through MHI tree due to dependency.
- Flush the in-flight async transfers before notifying disconnect in
mhi_ep_abort_transfer() to fix a UAF, where a success callback delivered
after the -ENOTCONN notification could reference resources already freed
by the client.
- Fix device refcount leak in the error path of mhi_ep_create_device() when
dev_set_name() or device_add() fails.
Common
------
- Clean up kernel-doc warnings in include/linux/mhi.h.
- Add Jeff Hugo as the Reviewer of MHI bus.
* tag 'mhi-for-v7.3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mani/mhi:
PCI: epf-mhi: Implement mhi_cntrl->flush_async() to flush DMA read/write
bus: mhi: ep: Flush async transfers before notifying disconnect in mhi_ep_abort_transfer()
bus: mhi: ep: Add mhi_cntrl->flush_async() callback to flush the async read/write
bus: mhi: Clean up some kernel-doc warnings
bus: mhi: host: Fix controller cleanup on EDL sysfs failure
bus: mhi: pci_generic: Add SAHARA channel support for Foxconn products
bus: mhi: host: pci_generic: Set 'mhi_cntrl->no_m3' flag
bus: mhi: host: Add support for devices with no M3 state
bus: mhi: host: Flush the posted write after writing to MHI_SOC_RESET_REQ_OFFSET
MAINTAINERS: Add Jeff Hugo as the Reviewer of MHI bus
bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation
bus: mhi: core: Fix sys error transition latency
This module sets the acpi_device_id::driver_data to 0 but
the field is not actually used within the module, we can
just drop it from the table.
While we are at it - use a named initializer for the
acpi_device_id::id field as well to make the code more
readable.
Signed-off-by: Pawel Zalewski (The Capable Hub) <[email protected]>
Reviewed-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christophe Leroy (CS GROUP) <[email protected]>
Qualcomm driver updates for v7.3
Add Maili platform bindings for SCM, IMEM, AOSS, and PMIC GLINK. Add
Shikra IMEM, RPM SMD, LLCC, and UBWC support, including handling for
firmware-configured LLCC ECC interrupts.
Add the generic Peripheral Authentication Service with SCM and OP-TEE
backends, and migrate the MSM DRM and IPA drivers to it.
Add SCM SMC-call tracepoints and configurable minidump delivery through
always-on SRAM. Correct SCM download-mode pointer ordering and improve
download-mode probe diagnostics.
Rework the UBWC configuration database and add Milos and Shikra
configuration. Add protection-domain mappings for SA8775P and QCS8300,
support newer ICE versions, Hawi subsystem statistics, and SDM850
identification.
Simplify Qualcomm SoC Kconfig selection and architecture dependencies.
Use managed resources in EBI2 and RPMh RSC probe paths to correct cleanup
on failures.
* tag 'qcom-drivers-for-7.3' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (44 commits)
soc: qcom: llcc: Skip ECC interrupt setup on Shikra, pre-configured by DSF
dt-bindings: sram: Document qcom,shikra-imem compatible
net: ipa: Switch to generic PAS TZ APIs
firmware: qcom: scm: Add minidump SRAM support
firmware: qcom: scm: use dev_err_probe() for dload address failure
firmware: qcom: scm: Fix missing smp_load_acquire()
dt-bindings: firmware: qcom,scm: Add minidump SRAM property
drm/msm: Switch to generic PAS TZ APIs
bus: qcom-ebi2: use managed resources for clocks and children
soc: qcom: rpmh-rsc: manage PM notifiers with devres
firmware: qcom: scm: Allow QSEECOM on Honor Magicbook Art 14
firmware: qcom: scm: instrument SMC call path with tracepoints
firmware: qcom: scm: add trace events for the SMC call interface
soc: qcom: Avoid SCM and SPM for cpuidle drivers
soc: qcom: Make important drivers default
soc: qcom: Restrict drivers per ARM/ARM64
soc: qcom: Hide all drivers behind selectable menu
MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service
firmware: qcom: Add a PAS TEE service
firmware: qcom_scm: Migrate to generic PAS service
...
Signed-off-by: Arnd Bergmann <[email protected]>
mhi_ep_abort_transfer() notifies the client drivers about the channel
disconnect using -ENOTCONN and only then flushes the ring workqueue to
drain the in-flight transfers. But the async DMA transfers issued by the
ring workers can still complete after the notification. And the completion
handlers trigger the client xfer_cb() as long as it is set.
So a transfer completing during the flush can deliver a success callback to
the client even after it has been notified about the disconnect. This can
lead to UAF (Use-After-Free) issues as the client can free its per-transfer
resources in response to the -ENOTCONN notification and the trailing
success callback would then reference the freed resources.
So to fix this issue, disable all the channels first to prevent new
transfers and then drain both the ring workqueue and the in-flight async
transfers before notifying the disconnect. The completion and queue paths
bail out once the channel state is not MHI_CH_STATE_RUNNING, so disabling
the channels upfront makes sure that no new transfer sneaks in during the
drain and all the pending completions are delivered while xfer_cb() is
still valid.
Reviewed-by: Frank Li <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
MHI EP stack makes use of the MHI controller drivers like MHI EPF to do
read/write to the host memory. And that driver is free to use mechanisms
like DMA to offload the read/write operations.
So if DMA is used for offload, then there is no guarantee that those DMA
operations would be completed by the time mhi_ep_remove() gets called. This
can lead to UAF (Use-After-Free) issues as the DMA callback can trigger
xfer_cb() even after mhi_ep_remove() has returned.
So to fix this issue, introduce the mhi_cntrl->flush_async() callback and
call it in mhi_ep_remove() to drain all the in-flight async transfers
before disconnecting the channels.
The completion handlers keep triggering xfer_cb() as long as it is set. So
flushing the transfers after notifying the client about the disconnect
(-ENOTCONN) would still let a success callback slip through afterwards and
lead to the same UAF. So disable the channels first to prevent new
transfers, then flush the in-flight transfers so that their completions are
delivered while xfer_cb() is still valid and only then notify the
disconnect and clear xfer_cb().
Fixes: 2547beb00d ("bus: mhi: ep: Add support for async DMA read operation")
Fixes: ee08acb58f ("bus: mhi: ep: Add support for async DMA write operation")
Reviewed-by: Frank Li <[email protected]>
Cc: [email protected] # Needs dmaengine driver fix as well
Signed-off-by: Manivannan Sadhasivam <[email protected]>
mhi_register_controller() adds the controller device before creating the
optional trigger_edl sysfs file. If sysfs_create_file() fails, the error
path only drops the device reference and leaves the device registered.
Hence, call device_del() in the error path before put_device().
Fixes: 17553ba8e1 ("bus: mhi: host: Add sysfs entry to force device to enter EDL")
Signed-off-by: Yuho Choi <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Commit 0494cf9793 ("bus: mhi: host: pci_generic: Disable runtime PM for
QDU100") added the 'no_m3' flag to indicate that the QDU100 device doesn't
support M3 state and used this flag to skip runtime PM. But it didn't
prevent the MHI bus from transitioning the device to M3 during system
suspend.
So set 'mhi_cntrl->no_m3' flag based on the local 'info->no_m3' flag to
indicate MHI bus that this device doesn't support M3 state so that it can
skip the transition.
Cc: [email protected] # depends on the 'mhi_cntrl->no_m3' flag addition
Fixes: 0494cf9793 ("bus: mhi: host: pci_generic: Disable runtime PM for QDU100")
Reported-by: Krishna Chaitanya Chundru <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
MHI bus transitions the device into M3 state during suspend and back to M0
state during resume. But due to hardware issues, some devices do not
support M3 state. To support these devices properly, MHI bus needs to skip
transitioning the device to M3 during suspend and back to M0 during resume.
For this purpose, introduce the 'mhi_cntrl->no_m3' flag and allow it to be
set by the MHI controller drivers. Once set, this flag lets the MHI bus
skip transitioning the device to M3/M0 during suspend/resume.
But, simply skipping suspend/resume for such devices is not sufficient, as
it leaves the MHI host in M0 state with device access enabled. Client
drivers that do not implement PM callbacks (for instance, the non-freezable
rx_refill worker in mhi_net driver) could then keep ringing channel
doorbells and issue MMIO to the device even after the controller driver has
disabled it and moved it to D3 during its own suspend, resulting in access
to a powered down device.
So instead of skipping the entire suspend/resume operation, run the full
host suspend/resume sequence but without the device-side M state handshake.
During suspend, only transition the host to M3 without sending the MHICTRL
M3 command or waiting for the device M3 event. During resume, bring the
host back to M0 through mhi_pm_m0_transition() without sending the MHICTRL
M0 command.
With the host in M3, all device access is gated by MHI_DB_ACCESS_VALID()
and MHI_REG_ACCESS_VALID(), so any transfer queued by the clients during
suspend is deferred until resume, where mhi_pm_m0_transition() rings the
pending doorbells.
Signed-off-by: Manivannan Sadhasivam <[email protected]>
mhi_soc_reset() tries to reset the device by writing to the
MHI_SOC_RESET_REQ_OFFSET register. But it doesn't do a read-back to ensure
that the write gets flushed to the device before returning to the caller.
This may lead to the delay (if implemented) on the caller to be
insufficient, if the posted write doesn't reach the device before the
delay.
So add a read-back after writing to the MHI_SOC_RESET_REQ_OFFSET register.
Fixes: b5a8d233a5 ("bus: mhi: core: Add device hardware reset support")
Reported-by: Alex Williamson <[email protected]>
Closes: https://lore.kernel.org/linux-pci/[email protected]
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Jeff Hugo <[email protected]>
Link: https://patch.msgid.link/[email protected]
qcom_ebi2_probe() enables the EBI2 clocks manually and populates child
devices manually. Several later failure paths can then return without
disabling the clocks or without relying on the driver core to undo child
population.
Use devm_clk_get_enabled() for both clocks and
devm_of_platform_populate() for children. This lets the driver core
unwind the resources automatically and removes the hand-written error
labels.
Fixes: 335a127548 ("bus: qcom: add EBI2 driver")
Signed-off-by: Pengpeng Hou <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>
mhi_ep_create_device() takes one device reference for the UL channel and
another for the DL channel after allocating the transfer device. These
references are normally released by mhi_ep_destroy_device() before the
device itself is removed.
If dev_set_name() or device_add() fails, the error path currently drops
only one reference. The remaining channel references keep the device
from being released and leave the channels associated with a device that
was never registered.
Route both failures through a common unwind path that drops the DL
channel reference, the UL channel reference, and the initial reference
from device_initialize().
Fixes: 297c77a0f2 ("bus: mhi: ep: Add support for creating and destroying MHI EP devices")
Signed-off-by: Yuho Choi <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://patch.msgid.link/[email protected]
Bring forward the idea to fix the power down latency in
mhi_pm_disable_transition() further to mhi_pm_sys_error_transition()
so that the transition into system error (triggered by AT!RESET) in the
modems won't have to return only after the timeout of up to 24 seconds.
Once the device gets reset, there is no guarantee that it will send an
interrupt to indicate the state transition. So polling is the sensible
option here.
Signed-off-by: Qingtao Cao <[email protected]>
[mani: commit log]
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Krishna Chaitanya Chundru <[email protected]>
Link: https://patch.msgid.link/[email protected]
qcom_ebi2_probe() enables the EBI2X and EBI2 clocks before it walks
child nodes and populates child devices. If reading a child node's reg
property fails, or if of_platform_default_populate() fails, probe returns
without disabling either clock.
Route those failure paths through the existing clock cleanup labels so a
failed probe does not leave the clocks prepared and enabled.
Fixes: 335a127548 ("bus: qcom: add EBI2 driver")
Signed-off-by: Ruoyu Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>
sysc_init_stdout_path() gets the /chosen node with
of_find_node_by_path() to read stdout-path. The function then overwrites
the local node pointer with the stdout-path lookup result, or exits on
error, without dropping the /chosen reference.
Keep the /chosen node in a separate variable and put it after the
stdout-path value has been used for the lookup. The successful stdout
node lookup remains referenced by the cached stdout_path pointer.
Fixes: 3bb37c8e6e ("bus: ti-sysc: Handle stdout-path for debug console")
Signed-off-by: Yuho Choi <[email protected]>
Reviewed-by: Andreas Kemnade <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Kevin Hilman (TI) <[email protected]>
Pull misc driver updates from Greg KH:
"Here is the big set of char, misc, iio, fpga, and other small driver
subsystems changes for 7.2-rc1.
Lots of little stuff in here, the majority being of course the IIO
driver updates, as a list they are:
- IIO driver updates and additions
- GPIB driver bugfixes and cleanups
- Android binder driver updates (rust and C version)
- counter driver updates
- MHI driver updates
- mei driver updates
- w1 driver updates
- interconnect driver updates
- Comedi driver fixes and updates
- some obsolete char drivers removed (applicom and dtlk)
- hwtracing driver updates
- other tiny driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits)
w1: ds2482: Use named initializers for arrays of i2c_device_data
firmware: stratix10-svc: Add support to query Arm Trusted Firmware (ATF) version
firmware: stratix10-rsu: avoid blocking reboot_image sysfs when busy
coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()
iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure
iio: chemical: scd30: Replace manual locking with RAII locking
iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle()
iio: dac: ad5686: create bus ops struct
iio: dac: ad5686: cleanup doc header of local structs
iio: dac: ad5686: add control_sync() for single-channel devices
iio: dac: ad5686: add helpers to handle powerdown masks
iio: dac: ad5686: add of_match table to the spi driver
iio: dac: ad5686: drop enum id
iio: dac: ad5686: remove redundant register definition
iio: dac: ad5686: refactor include headers
iio: adc: ad4080: fix AD4880 chip ID
iio: light: veml3328: add support for new device
dt-bindings: iio: light: veml6030: add veml3328
fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()
fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()
...
Pull SoC driver updates from Arnd Bergmann:
"There are a few added drivers, but mostly the normal maintenance to
drivers for firmware, memory controller and other soc specific
hardware:
- The NXP QuickEngine gets modern MSI support, which allows some
cleanups to the GICv3 irqchip chip driver
- A new SoC specific driver for the Renesas R-Car MFIS unit is added,
encapsulating support for the on-chip mailbox and hwspinlock
implementations that are not easily separated into individual
drivers
- The Qualcomm SoC drivers add support for additional SoC
implementations, and flexibility around power management for the
serial-engine driver as well as probing the LLCC driver using
custom hardware descriptions inside of the device itself.
- Added support for the Samsung thermal management unit
- A cleanup to the Tegra 'PMC' driver interfaces to remove legacy
APIs and allow multiple PMC instances everywhere.
- Updates to the TI SCI and KNAS drivers to improve suspend/resume
support.
- Minor driver changes for mediatek, xilinx, allwinner, aspeed,
tegra, broadcom, amd, microchip and starfive specific drivers
- Memory controller updates for Tegra and Renesas for additional SoC
types and other improvements.
- Firmware driver updates for Arm FF-A, SMCCC and SCMI interfaces, to
update driver probing, object lifetimes and address minor bugs"
* tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (189 commits)
Revert "firmware: zynqmp: Add dynamic CSU register discovery and sysfs interface"
Revert "Documentation: ABI: add sysfs interface for ZynqMP CSU registers"
memory: tegra234: drop dead NULL check in tegra234_mc_icc_aggregate()
memory: tegra264: drop redundant tegra264_mc_icc_aggregate()
memory: tegra186-emc: stop borrowing MC aggregate hook for EMC
soc: aspeed: cleanup dead default for ASPEED_SOCINFO
firmware: tegra: bpmp: Add support for multi-socket platforms
firmware: tegra: bpmp: Propagate debugfs errors
soc/tegra: pmc: Add Tegra238 support
soc/tegra: pmc: Restrict power-off handler to Nexus 7
soc/tegra: pmc: Populate powergate debugfs only when needed
soc/tegra: pmc: Move legacy code behind CONFIG_ARM guard
soc/tegra: pmc: Remove unused legacy functions
soc/tegra: pmc: Create PMC context dynamically
firmware: samsung: acpm: remove compile-testing stubs
firmware: samsung: acpm: Add devm_acpm_get_by_phandle helper
firmware: samsung: acpm: Add TMU protocol support
firmware: samsung: acpm: Make acpm_ops const and access via pointer
firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops members
firmware: samsung: acpm: Annotate rx_data->cmd with __counted_by_ptr
...
Pull gpio updates from Bartosz Golaszewski:
"There's one new driver, one legacy driver removed, a kunit test-suite
for the GPIO core, support for new models in existing drivers and a
slew of various changes in many places though I can't think of
anything controversial that would stand out - it's been a relatively
calm cycle.
GPIO core:
- Add an initial set of kunit test cases for the GPIO subsystem
- Use the devres owner as the GPIO chip's parent in absence of any
other parent
- Fix const-correctness of GPIO chip SRCU guards
- Provide new GPIO consumer interfaces: gpiod_is_single_ended() and
fwnode_gpiod_get()
- Quarantine all legacy GPIO APIs in linux/gpio/legacy.h
- Use __ro_after_init where applicable
New drivers:
- Add driver for the GPIO controller on Waveshare DSI TOUCH panels
Removed drivers:
- Remove the obsolete ts5500 GPIO driver
Driver updates:
- Modernize gpio-timberdale: remove platform data support and use
generic device property accessors
- Extend test build coverage by enabling COMPILE_TEST for more GPIO
drivers
- Add some missing dependencies in Kconfig
- Add support for sparse fixed direction to gpio-regmap
- Remove dead code from gpio-nomadik
- use BIT() in gpio-mxc
- use bitmap_complement() in gpio-xilinx and gpio-pca953x
- Use more appropriate printing functions where applicable
- Use named initializers for platform_device_id and i2c_device_id
arrays
- Convert gpio-altera to using the generic GPIO chip helper library
- Add support for new models to gpio-dwapb, gpio-zynq, gpio-usbio and
gpio-tegra186
- Unify the naming convention for Qualcomm in GPIO drivers
- Fix interrupt bank mapping to GPIO chips in gpio-mt7621
- Add support for the lines-initial-states property to gpio-74x164
- Switch to using dynamic GPIO base in gpio-ixp4xx
- Move the handling of an OF quirk from ASoC to gpiolib-of.c where
other such quirks live
- Use handle_bad_irq() in gpio-ep93xx
- Some other minor tweaks and refactorings
Devicetree bindings:
- Document the Waveshare GPIO controller for DSI TOUCH panels
- Document new models: Tegra238 in gpio-tegra186 and EIO GPIO in
gpio-zynq
- Add new properties for gpio-dwapb and fairchild,74hc595
- Fix whitespace issues
- Sort compatibles alphabetically in gpio-zynq
Documentation:
- Fix kerneldoc warnings in gpio-realtek-otto
Misc:
- Attach software nodes representing GPIO chips to the actual struct
device objects associated with them in some legacy platforms
enabling real firmware node lookup instead of string matching
- Drop unneeded dependencies on OF_GPIO from bus and staging drivers"
* tag 'gpio-updates-for-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (62 commits)
gpio: nomadik: remove dead DB8540 code from <gpio/gpio-nomadik.h>
gpio: mt7621: fix interrupt banks mapping on gpio chips
bus: ts-nbus: drop unneeded dependency on OF_GPIO
staging: media: max96712: drop unneeded dependency on OF_GPIO
gpiolib: Replace strcpy() with memcpy()
gpio: remove obsolete UAF FIXMEs from lookup paths
gpio: core: fix const-correctness of gpio_chip_guard
gpio: mxc: use BIT() macro
gpio: realtek-otto: fix kernel-doc warnings
gpio: max77620: Unify usage of space and comma in platform_device_id array
gpio: Use named initializers for platform_device_id arrays
gpio: cros-ec: Drop unused assignment of platform_device_id driver data
ARM: omap1: enable real software node lookup of GPIOs on Nokia 770
ARM: omap1: use platform_device_register_full() for GPIO devices on OMAP 16xx
ARM: omap1: drop unused variable from omap16xx_gpio_init()
gpio: gpiolib: use seq_puts() for plain strings
gpio: ts5500: remove obsolete driver
gpio: add kunit test cases for the GPIO subsystem
kunit: provide kunit_platform_device_unregister()
kunit: provide kunit_platform_device_register_full()
...
soc/tegra: Changes for v7.2-rc1
These changes update some maintainer contact information, add a modern
way of reading the chip information and cleanup/enhance some existing
code.
* tag 'tegra-for-7.2-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: Use ARM SMCCC to get chip ID, revision, and platform info
soc/tegra: fuse: Register nvmem lookups at probe
Documentation: ABI: Take over as contact for sysfs-driver-tegra-fuse
MAINTAINERS: Move Peter De Schrijver to CREDITS
bus: tegra-aconnect: Use dev_err_probe for probe error paths
Signed-off-by: Arnd Bergmann <[email protected]>
Allwinner driver changes for 7.2
Mostly changes to the SRAM driver to allow for one SRAM region to be
"claimed" by multiple changes. When a region is "claimed" it is removed
or disconnected from the CPU's view. This is needed on the H6 and H616,
which have one alias region seemingly shared between the video codec
engine and the display engine.
One minor fix for the RSB driver is also included.
* tag 'sunxi-drivers-for-7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
bus: sunxi-rsb: Always check register address validity
soc: sunxi: sram: Add H616 SRAM regions
soc: sunxi: sram: Support claiming multiple regions per device
soc: sunxi: sram: Allow SRAM to be claimed multiple times
soc: sunxi: sram: Const-ify sunxi_sram_func data and references
dt-bindings: sram: sunxi-sram: Add H616 SRAM regions
dt-bindings: sram: Document Allwinner H616 VE SRAM
Signed-off-by: Krzysztof Kozlowski <[email protected]>
OF_GPIO is selected automatically on all OF systems. Any symbols it
controls also provide stubs and are private to GPIOLIB anyway so there's
really no reason to select it explicitly.
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Commit b4d01c5b9a ("bus: mhi: host: pci_generic: Read SUBSYSTEM_VENDOR_ID
for VF's to check status") added the check for physical function by
checking for 'pdev->is_physfn. But 'pdev->is_physfn' is only set for the
physical function of a SR-IOV capable device. But for the non-SR-IOV device
this variable will be 0. So this check ended up breaking the health check
functionality for all non-SR-IOV devices.
Fix it by checking for '!pdev->is_virtfn' to make sure that the check is
only skipped for virtual functions.
Cc: [email protected] # 6.18
Reported-by: Slark Xiao <[email protected]>
Tested-by: Slark Xiao <[email protected]>
Fixes: b4d01c5b9a ("bus: mhi: host: pci_generic: Read SUBSYSTEM_VENDOR_ID for VF's to check status")
Signed-off-by: Manivannan Sadhasivam <[email protected]>
The register address was already validated for read operations in
regmap_sunxi_rsb_reg_read before being truncated to a u8. Write operations
have the same set of possible addresses, and the address is being truncated
from u32 to u8 here as well, so the same check is needed.
Signed-off-by: Samuel Holland <[email protected]>
Signed-off-by: Andrey Skvortsov <[email protected]>
Fixes: d787dcdb9c ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Reviewed-by: Chen-Yu Tsai <[email protected]>
Reviewed-by: Jernej Skrabec <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Chen-Yu Tsai <[email protected]>
FSL SOC Changes for 7.1
Freescale QUICC Engine:
- Add missing cleanup on device removal and switch to irq_domain_create_linear()
in interrupt controller for IO Ports
- Panic on ioremap() failure in qe_reset()
Freescale Management Complex:
- Move fsl-mc over to device MSI infrastructure
- Wait for the MC firmware to complete its boot
Freescale Hypervisor:
- Fix header kernel-doc warnings
* tag 'soc_fsl-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux:
bus: fsl-mc: wait for the MC firmware to complete its boot
soc: fsl: qe: panic on ioremap() failure in qe_reset()
soc: fsl: qe_ports_ic: switch to irq_domain_create_linear()
soc: fsl: qe_ports_ic: Add missing cleanup on device removal
virt: fsl_hypervisor: fix header kernel-doc warnings
platform-msi: Remove stale comment
fsl-mc: Remove legacy MSI implementation
fsl-mc: Switch over to per-device platform MSI
irqchip/gic-v3-its: Add fsl_mc device plumbing to the msi-parent handling
fsl-mc: Add minimal infrastructure to use platform MSI
fsl-mc: Remove MSI domain propagation to sub-devices
Signed-off-by: Arnd Bergmann <[email protected]>
All the callers of mhi_ep_handle_syserr() except mhi_ep_process_cmd_ring()
are holding the 'state_lock' to avoid the race in setting the MHI state. So
do the same in mhi_ep_process_cmd_ring() for sanity.
Fixes: e827569062 ("bus: mhi: ep: Add support for processing command rings")
Cc: [email protected] # 5.18
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://patch.msgid.link/[email protected]
The mhi_cntrl->mhi_state field should be protected by state_lock to
ensure atomic state transitions. However, mhi_ep_power_up() access
mhi_state without holding this lock, which can race with concurrent state
transitions and lead to state corruption.
Add proper state_lock protection around mhi_state access.
Fixes: fb3a26b7e8 ("bus: mhi: ep: Add support for powering up the MHI endpoint stack")
Fixes: f7d0806bdb ("bus: mhi: ep: Add support for handling SYS_ERR condition")
Signed-off-by: Sumit Kumar <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://patch.msgid.link/20260414-reset_worker_deadlock-v2-2-42fd682b45db@oss.qualcomm.com
There is a potential deadlock scenario in mhi_ep_reset_worker() where
the state_lock mutex is acquired twice in the same call chain:
mhi_ep_reset_worker()
mutex_lock(&mhi_cntrl->state_lock)
mhi_ep_power_up()
mhi_ep_set_ready_state()
mutex_lock(&mhi_cntrl->state_lock) <- Deadlock
Fix this by releasing the state_lock before calling mhi_ep_power_up().
The lock is only needed to protect current MHI state read operation. The
lock can be safely released before proceeding with the power up sequence.
Fixes: 7a97b6b473 ("bus: mhi: ep: Add support for handling MHI_RESET")
Signed-off-by: Sumit Kumar <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://patch.msgid.link/20260414-reset_worker_deadlock-v2-1-42fd682b45db@oss.qualcomm.com
Pull char / misc / IIO / and others driver updates from Greg KH:
"Here is the char/misc/iio and other smaller driver subsystem updates
for 7.1-rc1. Lots of stuff in here, all tiny, but relevant for the
different drivers they touch. Major points in here is:
- the usual large set of new IIO drivers and updates for that
subsystem (the large majority of this diffstat)
- lots of comedi driver updates and bugfixes
- coresight driver updates
- interconnect driver updates and additions
- mei driver updates
- binder (both rust and C versions) updates and fixes
- lots of other smaller driver subsystem updates and additions
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (405 commits)
coresight: tpdm: fix invalid MMIO access issue
mei: me: add nova lake point H DID
mei: lb: add late binding version 2
mei: bus: add mei_cldev_uuid
w1: ds2490: drop redundant device reference
bus: mhi: host: pci_generic: Add Telit FE912C04 modem support
mei: csc: wake device while reading firmware status
mei: csc: support controller with separate PCI device
mei: convert PCI error to common errno
mei: trace: print return value of pci_cfg_read
mei: me: move trace into firmware status read
mei: fix idle print specifiers
mei: me: use PCI_DEVICE_DATA macro
sonypi: Convert ACPI driver to a platform one
misc: apds990x: fix all kernel-doc warnings
most: usb: Use kzalloc_objs for endpoint address array
hpet: Convert ACPI driver to a platform one
misc: vmw_vmci: Fix spelling mistakes in comments
parport: Remove completed item from to-do list
char: remove unnecessary module_init/exit functions
...
Pull SoC driver updates from Arnd Bergmann:
"The driver updates again are all over the place with many minor fixes
going into platform specific code. The most notable changes are:
- Support for Microchip pic64gx system controllers
- Work on cleaning up devicetree bindings for SoC drivers, and
converting them into the new format
- Lots of smaller changes for Qualcomm SoC drivers, including support
for a number of newly supported chips
- reset controller API cleanups and a new driver for Cix Sky1
- Reworks of the Tegra PMC and CBB drivers, along with a change to
how individual Tegra SoCs get selected in Kconfig and BPMP firmware
driver updates including a refresh of the ABI header to match the
version used by firmware
- STM32 updates to the firewall bus driver and support for the debug
bus through OP-TEE
- SCMI firmware driver improvements for reliability, in particular
for dealing with broken firmware interrupts
- Memory driver updates for Tegra, and a patch to remove the unused
Baikal T1 driver"
* tag 'soc-drivers-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (193 commits)
firmware: arm_ffa: Use the correct buffer size during RXTX_MAP
firmware: qcom: scm: Allow QSEECOM on Lenovo IdeaCentre Mini X
clk: spear: fix resource leak in clk_register_vco_pll()
reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
reset: rzv2h-usb2phy: Convert to regmap API
dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/G3E USB2PHY reset
dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property
soc: microchip: add mpfs gpio interrupt mux driver
dt-bindings: soc: microchip: document PolarFire SoC's gpio interrupt mux
gpio: mpfs: Add interrupt support
soc: qcom: ubwc: add helpers to get programmable values
soc: qcom: ubwc: add helper to get min_acc length
firmware: qcom: scm: Register gunyah watchdog device
soc: qcom: socinfo: Add SoC ID for SA8650P
dt-bindings: arm: qcom,ids: Add SoC ID for SA8650P
firmware: qcom: scm: Allow QSEECOM on Mahua CRD
soc: qcom: wcnss: simplify allocation of req
soc: qcom: pd-mapper: Add support for Eliza
soc: qcom: aoss: compare against normalized cooling state
soc: qcom: llcc: fix v1 SB syndrome register offset
...
There are use cases in which the Management Complex firmware boot
process is started by the bootloader which does not wait for the boot to
complete. This is mainly done in order to reduce the overall boot time
of a DPAA2 based SoC.
In this kind of circumstance, the fsl-mc bus driver needs to make sure
that the MC firmware boot process is finished before proceeding to the
usual operations such as interrogating the firmware to gather all
existent DPAA2 objects, creating the fsl-mc devices on the bus etc.
Add this kind of check early in the boot process of the fsl-mc bus and
defer the probe in case the firmware is still in its boot process.
Signed-off-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christophe Leroy (CS GROUP) <[email protected]>
i.MX SoC update for 7.1:
- Updates MAINTAINERS file to include i.MX team coverage for ARM NXP platforms
- Sets default values for OPACR (Off-Platform Peripheral Access Control
Register) in the i.MX AIPSTZ bus driver
* tag 'imx-soc-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/frank.li/linux:
MAINTAINERS: Add i.MX team to all arm NXP platforms
bus: imx-aipstz: set default value for opacr registers
Signed-off-by: Arnd Bergmann <[email protected]>
In various places in the kernel, we modify the fwnode "flags" member
by doing either:
fwnode->flags |= SOME_FLAG;
fwnode->flags &= ~SOME_FLAG;
This type of modification is not thread-safe. If two threads are both
mucking with the flags at the same time then one can clobber the
other.
While flags are often modified while under the "fwnode_link_lock",
this is not universally true.
Create some accessor functions for setting, clearing, and testing the
FWNODE flags and move all users to these accessor functions. New
accessor functions use set_bit() and clear_bit(), which are
thread-safe.
Cc: [email protected]
Fixes: c2c724c868 ("driver core: Add fw_devlink_parse_fwtree()")
Reviewed-by: Andy Shevchenko <[email protected]>
Acked-by: Mark Brown <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Signed-off-by: Douglas Anderson <[email protected]>
Reviewed-by: Rafael J. Wysocki (Intel) <[email protected]>
Reviewed-by: Saravana Kannan <[email protected]>
Link: https://patch.msgid.link/20260317090112.v2.1.I0a4d03104ecd5103df3d76f66c8d21b1d15a2e38@changeid
[ Fix fwnode_clear_flag() argument alignment, restore dropped blank
line in fwnode_dev_initialized(), and remove unnecessary parentheses
around fwnode_test_flag() calls. - Danilo ]
Signed-off-by: Danilo Krummrich <[email protected]>
Add the stm32 debug bus driver that is responsible of checking the
debug subsystem accessibility before probing the related peripheral
drivers.
This driver is OP-TEE dependent and relies on the STM32 debug access
PTA.
Signed-off-by: Gatien Chevallier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Torgue <[email protected]>
Current implementation restricts the check on the firewall controller
being the bus parent. Change this by using the controller referenced
in each firewall queries.
Signed-off-by: Gatien Chevallier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Torgue <[email protected]>
Peripheral holding CID0 cannot be accessed, remove this completely
incorrect check. While there, fix and simplify the semaphore checking
that should be performed when the CID filtering is enabled.
Fixes: a182084572 ("bus: rifsc: introduce RIFSC firewall controller driver")
Signed-off-by: Gatien Chevallier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Torgue <[email protected]>
Linus Torvalds