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2021-12-22Merge tag 'iio-for-5.17a' of ↵Greg Kroah-Hartman6-109/+8
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next Jonathan writes: 1st set of IIO new device support, features and cleanup for 5.17 Includes some fixes that were either late breaking, low priority or complex enough to not be good to rush in late in the cycle. Tree rebased today to fix up some trivial issues + pull in a fix that was previously on the fixes-togreg branch. Vast majority have been in linux-next for some time now. New device support * adi,ad7293 - New driver and bindings for this Power Amplifier drain current controller. A complex device with various related monitoring functions. * adi,ad75513R - New driver and bindings for this combined ADC and DAC device. - A few follow up fixes. * adi,admv8818 - New driver (and type) for this 2-18GHz filter device. Includes bindings and ABI documentation to allow clk_notifier based auto adjustment of the filters in appropriate applications. * liteon,ltr501 - Support for the ltr303. ID and chip specific info table. * xilinx,ams - New generic firmware function fwnode_iomap() as used in this driver. - New driver and bindings for this ADC and on-chip sensors as found in various Xilinx devices. Core * Introduced IIO_VAL_INT_64 which uses val and val2 in IIO callbacks to form a 64 bit integer when higher precision needed. * Allow IIO_ENUM_AVAILABLE to be used with different shared values. * Fix a long term issue with scheduling whilst atomic when iio_trig_poll() is called but no trigger consumers are actually enabled and hence the trigger may be reenabled from the interrupt handler. Seen in the wild on the tsc2046. * Mark iio_device_type const. * buffer: Use a separate index variable to simplify code. * buffer-dma: Clear out unused struct iio_buffer_block * buffer-dmaengine: Switch to cheaper round_down() as power of 2 values. Tests/tools * format_value - Check against NULL returns from allocations in tests. - Add IIO_VAL_INT_64 test case. * event_monitor - Flush the output after event to given more consistent latency when tool output piped to other programs. Driver Features * axp20x - Add support for NTC thermistor channel and document TS pin binding. * arm,scmi - Add reading of raw channel values (using IIO_VAL_INT_64) * liteon,ltr501 - Add proximity-near-level support and dt-binding. Tree wide cleanup * Remove no-op trigger ops from multiple drivers. * Stop using dev_get_drvdata() on the iio_dev->dev in various drivers and then stop assigning it to allow this to be used for other purposes. We can always get to the indio_dev using dev_to_iio_dev() which is a container_of() based approach. Also cleanup up some related unnecessary convoluted cases. - atmel,at91-sam5d2 - nxp,imx7d - meas,ms5611 - st,st_sensors * Where available (or easy to introduce) use the scan_type.* values in place of a second copy for read_raw and similar paths. - adi,ad7266 - bosch,bma220 - fsl,mac3110 - fsl,mma7455 - fsl,mpl3115 - kionix,kcjk-1013 - sensortek,stk8ba50 - sensortek,stk8312 - ti,adc12138 - ti,ads1015 - vti,sca3000 - xilinx,xadc-core * Switch drives over to generic firmware properties including appropriate header changes to avoid including of.h - Various DACs had false CONFIG_OF dependencies. - dpot-dac - envelope-detector - adi,ad5755 - adi,ad5758 - capella,cm3605 - maxim,max9611 - microchip,mcp41010 - microchip,mcp3911 - ti,adc12138 * Trivial clang warning fixes for W=1 warnings. Driver specific cleanup and minor fixes * adi,ad7606 - Comment fixes. * ams,ad3935 - Drop pointless cast to the same type. * atmel,at91-sama5d2 - Fix wrong cast of iio_dev->dev to platform_device that happened to be harmless. * fsl,mma7660 - Stop i2c remove() function returning an error code. Part of a rework to eventually stop returning anything from these. * fsl,mma8452 - Use correct type for local irqreturn_t. * nxp,imx8mq - Maintainer email address update. * nxp,lpc18xx_adc - Ensure clk_prepare_enable() called before clk_get_rate(). - Switch of.h for mod_devicetable.h to reflect no of specific functions, just the id table. * renesas,rzg2l - Drop a dev_err() that just duplicates error printed in platform_get_irq() * sgx,vz89x - Drop pointless cast. * st,lsm6dsx - Make it possible to disable the sensorhub from DT to avoid a corner case where the address of a slave device many be accidentally modified. * st,stm32-adc - Stop leaking an of_node in an error path. * st,stmp2 - Avoid wrong sized type for bit field which could result in over-reading (harmless). Precursor to enabling -Warray-bounds. * ti,adc081c - Put back some ACPI support for non standards compliant ADC081C ID because it is known to be in the wild on some Aaeon boards. * ti,ads8688 - Cleanup redundant local ret variable assignment. * ti,ina2xx-adc - Use helper macro kthread_run() to replace some boilerplate. - Avoid double reference counting. - Drop pointless cast. * xilinx,xadc - Make the IRQ optional as not always wired to the host system. * tag 'iio-for-5.17a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (103 commits) iio: adc: ti-adc081c: Partial revert of removal of ACPI IDs iio:addac:ad74413r: Fix uninitialized ret in a path that won't be hit. MAINTAINERS: Add maintainer for xilinx-ams dt-bindings: iio: adc: Add Xilinx AMS binding documentation iio: adc: Add Xilinx AMS driver device property: Add fwnode_iomap() iio:accel:kxcjk-1013: Mark struct __maybe_unused to avoid warning. iio:accel:bmc150: Mark structure __maybe_unused as only needed with for pm ops. iio:dummy: Drop set but unused variable len. iio:magn:ak8975: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_mpu6050: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_icm42600: Suppress clang W=1 warning about pointer to enum conversion. iio:dac:mcp4725: Suppress clang W=1 warning about pointer to enum conversion. iio:amplifiers:hmc425a: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ti-ads1015: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:rcar: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ina2xx-adc: Suppress clang W=1 warning about pointer to enum conversion. iio:accel:bma180: Suppress clang W=1 warning about pointer to enum conversion. drivers:iio:dac: Add AD3552R driver support dt-bindings: iio: dac: Add adi,ad3552r.yaml ...
2021-12-21device property: Add fwnode_iomap()Anand Ashok Dumbre1-0/+2
This patch introduces a new helper routine - fwnode_iomap(), which allows to map the memory mapped IO for a given device node. This implementation does not cover the ACPI case and may be expanded in the future. The main purpose here is to be able to develop resource provider agnostic drivers. Suggested-by: Andy Shevchenko <[email protected]> Signed-off-by: Anand Ashok Dumbre <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Rafael J. Wysocki <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Cameron <[email protected]>
2021-12-21counter: Add the necessary colons and indents to the comments of counter_compiYanteng Si1-20/+20
Since commit aaec1a0f76ec ("counter: Internalize sysfs interface code") introduce a warning as: linux-next/Documentation/driver-api/generic-counter:234: ./include/linux/counter.h:43: WARNING: Unexpected indentation. linux-next/Documentation/driver-api/generic-counter:234: ./include/linux/counter.h:45: WARNING: Block quote ends without a blank line; unexpected unindent. Add the necessary colons and indents. Fixes: aaec1a0f76ec ("counter: Internalize sysfs interface code") Signed-off-by: Yanteng Si <[email protected]> Signed-off-by: William Breathitt Gray <[email protected]> Link: https://lore.kernel.org/r/26011e814d6eca02c7ebdbb92f171a49928a7e89.1640072891.git.vilhelm.gray@gmail.com Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-21rapidio: remove not used code about RIO_VID_TUNDRATiezhu Yang1-7/+0
According to https://rapidio.org/vendor-id/, there is no 0x000d vendor id in the complete and current list of VendorIDs, it means that the related code is dead code now, so just remove them. Signed-off-by: Tiezhu Yang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-21rapidio: remove not used macro definition in rio_ids.hTiezhu Yang1-6/+0
The definition of RIO_VID_FREESCALE, RIO_DID_MPC8560, RIO_DID_TSI500, RIO_DID_TSI576 and RIO_DID_TSI721 are not used for many years in the current code, so just remove them. Signed-off-by: Tiezhu Yang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-21Merge tag 'fpga-for-5.17-rc1' of ↵Greg Kroah-Hartman3-39/+89
git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga into char-misc-next Moritz writes: FPGA Manager changes for 5.17-rc1 Russ' patches rework the way we register FPGA managers, regions and bridges by simplifying the functions into a single register call. Nathan's patch addresses an unused variable warning that was introduced by Russ' patches. Yang's patch addresses a kernel doc warning. All patches have been reviewed on the mailing list, and have been in the last few linux-next releases (as part of our for-next branch) without issues. Signed-off-by: Moritz Fischer <[email protected]> * tag 'fpga-for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga: fpga: region: fix kernel-doc fpga: stratix10-soc: Do not use ret uninitialized in s10_probe() fpga: region: Use standard dev_release for class driver fpga: bridge: Use standard dev_release for class driver fpga: mgr: Use standard dev_release for class driver
2021-12-17bus: mhi: core: Add an API for auto queueing buffers for DL channelManivannan Sadhasivam1-5/+16
Add a new API "mhi_prepare_for_transfer_autoqueue" for using with client drivers like QRTR to request MHI core to autoqueue buffers for the DL channel along with starting both UL and DL channels. So far, the "auto_queue" flag specified by the controller drivers in channel definition served this purpose but this will be removed at some point in future. Cc: [email protected] Cc: Jakub Kicinski <[email protected]> Cc: David S. Miller <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Co-developed-by: Loic Poulain <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Loic Poulain <[email protected]> Signed-off-by: Manivannan Sadhasivam <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-13Merge v5.15-rc5 into char-misc-nextGreg Kroah-Hartman18-56/+114
We need the fixes in here as well, and also resolve some merge conflicts in: drivers/misc/eeprom/at25.c Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-12Merge tag 'char-misc-5.16-rc5' of ↵Linus Torvalds1-0/+13
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes from Greg KH: "Here are a bunch of small char/misc and other driver subsystem fixes. Included in here are: - iio driver fixes for reported problems - phy driver fixes for a number of reported problems - mhi resume bugfix for broken hardware - nvmem driver fix - rtsx driver fix for irq issues - fastrpc packet parsing fix All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (33 commits) bus: mhi: core: Add support for forced PM resume iio: trigger: stm32-timer: fix MODULE_ALIAS misc: rtsx: Avoid mangling IRQ during runtime PM nvmem: eeprom: at25: fix FRAM byte_len misc: fastrpc: fix improper packet size calculation MAINTAINERS: add maintainer for Qualcomm FastRPC driver bus: mhi: pci_generic: Fix device recovery failed issue iio: adc: stm32: fix null pointer on defer_probe error phy: HiSilicon: Fix copy and paste bug in error handling dt-bindings: phy: zynqmp-psgtr: fix USB phy name phy: ti: omap-usb2: Fix the kernel-doc style phy: qualcomm: ipq806x-usb: Fix kernel-doc style iio: at91-sama5d2: Fix incorrect sign extension iio: adc: axp20x_adc: fix charging current reporting on AXP22x iio: gyro: adxrs290: fix data signedness phy: ti: tusb1210: Fix the kernel-doc warn phy: qualcomm: usb-hsic: Fix the kernel-doc warn phy: qualcomm: qmp: Add missing struct documentation phy: mvebu-cp110-utmi: Fix kernel-doc warns iio: ad7768-1: Call iio_trigger_notify_done() on error ...
2021-12-12iio:dac:ad5755: Switch to generic firmware properties and drop pdataJonathan Cameron1-102/+0
Lars pointed out that platform data can also be supported via the generic properties interface, so there is no point in continuing to support it separately. Hence squish the linux/platform_data/ad5755.h header into the c file and drop accessing the platform data directly. Done by inspection only. Mostly completely mechanical with the exception of a few places where default value handling is cleaner done by first setting the value, then calling the firmware reading function but and not checking the return value, as opposed to reading firmware then setting the default if an error occurs. Part of general attempt to move all of IIO over to generic device properties, both to enable other firmware types and to remove drivers that can be the source of of_ specific behaviour in new drivers. Suggested-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]>
2021-12-12iio: trigger: Fix a scheduling whilst atomic issue seen on tsc2046Jonathan Cameron1-0/+2
IIO triggers are software IRQ chips that split an incoming IRQ into separate IRQs routed to all devices using the trigger. When all consumers are done then a trigger callback reenable() is called. There are a few circumstances under which this can happen in atomic context. 1) A single user of the trigger that calls the iio_trigger_done() function from interrupt context. 2) A race between disconnecting the last device from a trigger and the trigger itself sucessfully being disabled. To avoid a resulting scheduling whilst atomic, close this second corner by using schedule_work() to ensure the reenable is not done in atomic context. Note that drivers must be careful to manage the interaction of set_state() and reenable() callbacks to ensure appropriate reference counting if they are relying on the same hardware controls. Deliberately taking this the slow path rather than via a fixes tree because the error has hard to hit and I would like it to soak for a while before hitting a release kernel. Signed-off-by: Jonathan Cameron <[email protected]> Cc: Pengutronix Kernel Team <[email protected]> Cc: Dmitry Torokhov <[email protected]> Tested-by: Oleksij Rempel <[email protected]> Cc: <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-12-11Merge branch 'for-5.16-fixes' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu Pull percpu fixes from Dennis Zhou: "This contains a fix for SMP && !MMU archs for percpu which has been tested by arm and sh. It seems in the past they have gotten away with it due to mapping of vm functions to km functions, but this fell apart a few releases ago and was just reported recently. The other is just a minor dependency clean up. I think queued up right now by Andrew is a fix in percpu that papers of what seems to be a bug in hotplug for a special situation with memoryless nodes. Michal Hocko is digging into it further" * 'for-5.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu_ref: Replace kernel.h with the necessary inclusions percpu: km: ensure it is used with NOMMU (either UP or SMP)
2021-12-11Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+13
Merge misc fixes from Andrew Morton: "21 patches. Subsystems affected by this patch series: MAINTAINERS, mailmap, and mm (mlock, pagecache, damon, slub, memcg, hugetlb, and pagecache)" * emailed patches from Andrew Morton <[email protected]>: (21 commits) mm: bdi: initialize bdi_min_ratio when bdi is unregistered hugetlbfs: fix issue of preallocation of gigantic pages can't work mm/memcg: relocate mod_objcg_mlstate(), get_obj_stock() and put_obj_stock() mm/slub: fix endianness bug for alloc/free_traces attributes selftests/damon: split test cases selftests/damon: test debugfs file reads/writes with huge count selftests/damon: test wrong DAMOS condition ranges input selftests/damon: test DAMON enabling with empty target_ids case selftests/damon: skip test if DAMON is running mm/damon/vaddr-test: remove unnecessary variables mm/damon/vaddr-test: split a test function having >1024 bytes frame size mm/damon/vaddr: remove an unnecessary warning message mm/damon/core: remove unnecessary error messages mm/damon/dbgfs: remove an unnecessary error message mm/damon/core: use better timer mechanisms selection threshold mm/damon/core: fix fake load reports due to uninterruptible sleeps timers: implement usleep_idle_range() filemap: remove PageHWPoison check from next_uptodate_page() mailmap: update email address for Guo Ren MAINTAINERS: update kdump maintainers ...
2021-12-10timers: implement usleep_idle_range()SeongJae Park1-1/+13
Patch series "mm/damon: Fix fake /proc/loadavg reports", v3. This patchset fixes DAMON's fake load report issue. The first patch makes yet another variant of usleep_range() for this fix, and the second patch fixes the issue of DAMON by making it using the newly introduced function. This patch (of 2): Some kernel threads such as DAMON could need to repeatedly sleep in micro seconds level. Because usleep_range() sleeps in uninterruptible state, however, such threads would make /proc/loadavg reports fake load. To help such cases, this commit implements a variant of usleep_range() called usleep_idle_range(). It is same to usleep_range() but sets the state of the current task as TASK_IDLE while sleeping. Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: SeongJae Park <[email protected]> Suggested-by: Andrew Morton <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Tested-by: Oleksandr Natalenko <[email protected]> Cc: John Stultz <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-12-10Merge tag 'pm-5.16-rc5' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix a kernedoc comment that doesn't match the behavior of the function documented by it" * tag 'pm-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: runtime: Fix pm_runtime_active() kerneldoc comment
2021-12-10Merge tag 'aio-poll-for-linus' of ↵Linus Torvalds1-0/+26
git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull aio poll fixes from Eric Biggers: "Fix three bugs in aio poll, and one issue with POLLFREE more broadly: - aio poll didn't handle POLLFREE, causing a use-after-free. - aio poll could block while the file is ready. - aio poll called eventfd_signal() when it isn't allowed. - POLLFREE didn't handle multiple exclusive waiters correctly. This has been tested with the libaio test suite, as well as with test programs I wrote that reproduce the first two bugs. I am sending this pull request myself as no one seems to be maintaining this code" * tag 'aio-poll-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: aio: Fix incorrect usage of eventfd_signal_allowed() aio: fix use-after-free due to missing POLLFREE handling aio: keep poll requests on waitqueue until completed signalfd: use wake_up_pollfree() binder: use wake_up_pollfree() wait: add wake_up_pollfree()
2021-12-09percpu_ref: Replace kernel.h with the necessary inclusionsAndy Shevchenko1-1/+1
When kernel.h is used in the headers it adds a lot into dependency hell, especially when there are circular dependencies are involved. Replace kernel.h inclusion with the list of what is really being used. Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Dennis Zhou <[email protected]>
2021-12-09Merge tag 'net-5.16-rc5' of ↵Linus Torvalds6-28/+21
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from bpf, can and netfilter. Current release - regressions: - bpf, sockmap: re-evaluate proto ops when psock is removed from sockmap Current release - new code bugs: - bpf: fix bpf_check_mod_kfunc_call for built-in modules - ice: fixes for TC classifier offloads - vrf: don't run conntrack on vrf with !dflt qdisc Previous releases - regressions: - bpf: fix the off-by-two error in range markings - seg6: fix the iif in the IPv6 socket control block - devlink: fix netns refcount leak in devlink_nl_cmd_reload() - dsa: mv88e6xxx: fix "don't use PHY_DETECT on internal PHY's" - dsa: mv88e6xxx: allow use of PHYs on CPU and DSA ports Previous releases - always broken: - ethtool: do not perform operations on net devices being unregistered - udp: use datalen to cap max gso segments - ice: fix races in stats collection - fec: only clear interrupt of handling queue in fec_enet_rx_queue() - m_can: pci: fix incorrect reference clock rate - m_can: disable and ignore ELO interrupt - mvpp2: fix XDP rx queues registering Misc: - treewide: add missing includes masked by cgroup -> bpf.h dependency" * tag 'net-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (82 commits) net: dsa: mv88e6xxx: allow use of PHYs on CPU and DSA ports net: wwan: iosm: fixes unable to send AT command during mbim tx net: wwan: iosm: fixes net interface nonfunctional after fw flash net: wwan: iosm: fixes unnecessary doorbell send net: dsa: felix: Fix memory leak in felix_setup_mmio_filtering MAINTAINERS: s390/net: remove myself as maintainer net/sched: fq_pie: prevent dismantle issue net: mana: Fix memory leak in mana_hwc_create_wq seg6: fix the iif in the IPv6 socket control block nfp: Fix memory leak in nfp_cpp_area_cache_add() nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done nfc: fix segfault in nfc_genl_dump_devices_done udp: using datalen to cap max gso segments net: dsa: mv88e6xxx: error handling for serdes_power functions can: kvaser_usb: get CAN clock frequency from device can: kvaser_pciefd: kvaser_pciefd_rx_error_frame(): increase correct stats->{rx,tx}_errors counter net: mvpp2: fix XDP rx queues registering vmxnet3: fix minimum vectors alloc issue net, neigh: clear whole pneigh_entry at alloc time net: dsa: mv88e6xxx: fix "don't use PHY_DETECT on internal PHY's" ...
2021-12-09Merge branch 'for-linus' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID fixes from Jiri Kosina: - fixes for various drivers which assume that a HID device is on USB transport, but that might not necessarily be the case, as the device can be faked by uhid. (Greg, Benjamin Tissoires) - fix for spurious wakeups on certain Lenovo notebooks (Thomas Weißschuh) - a few other device-specific quirks * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: Ignore battery for Elan touchscreen on Asus UX550VE HID: intel-ish-hid: ipc: only enable IRQ wakeup when requested HID: google: add eel USB id HID: add USB_HID dependancy to hid-prodikeys HID: add USB_HID dependancy to hid-chicony HID: bigbenff: prevent null pointer dereference HID: sony: fix error path in probe HID: add USB_HID dependancy on some USB HID drivers HID: check for valid USB device for many HID drivers HID: wacom: fix problems when device is not a valid USB device HID: add hid_is_usb() function to make it simpler for USB detection HID: quirks: Add quirk for the Microsoft Surface 3 type-cover
2021-12-09wait: add wake_up_pollfree()Eric Biggers1-0/+26
Several ->poll() implementations are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay for blocking polls, since a blocking poll occurs within one task; however, non-blocking polls require another solution. This solution is for the queue to be cleared before it is freed, using 'wake_up_poll(wq, EPOLLHUP | POLLFREE);'. However, that has a bug: wake_up_poll() calls __wake_up() with nr_exclusive=1. Therefore, if there are multiple "exclusive" waiters, and the wakeup function for the first one returns a positive value, only that one will be called. That's *not* what's needed for POLLFREE; POLLFREE is special in that it really needs to wake up everyone. Considering the three non-blocking poll systems: - io_uring poll doesn't handle POLLFREE at all, so it is broken anyway. - aio poll is unaffected, since it doesn't support exclusive waits. However, that's fragile, as someone could add this feature later. - epoll doesn't appear to be broken by this, since its wakeup function returns 0 when it sees POLLFREE. But this is fragile. Although there is a workaround (see epoll), it's better to define a function which always sends POLLFREE to all waiters. Add such a function. Also make it verify that the queue really becomes empty after all waiters have been woken up. Reported-by: Linus Torvalds <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Eric Biggers <[email protected]>
2021-12-09bus: mhi: core: Add support for forced PM resumeLoic Poulain1-0/+13
For whatever reason, some devices like QCA6390, WCN6855 using ath11k are not in M3 state during PM resume, but still functional. The mhi_pm_resume should then not fail in those cases, and let the higher level device specific stack continue resuming process. Add an API mhi_pm_resume_force(), to force resuming irrespective of the current MHI state. This fixes a regression with non functional ath11k WiFi after suspend/resume cycle on some machines. Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=214179 Link: https://lore.kernel.org/regressions/[email protected]/ Fixes: 020d3b26c07a ("bus: mhi: Early MHI resume failure in non M3 state") Cc: [email protected] #5.13 Reported-by: Kalle Valo <[email protected]> Reported-by: Pengyu Ma <[email protected]> Tested-by: Kalle Valo <[email protected]> Acked-by: Kalle Valo <[email protected]> Signed-off-by: Loic Poulain <[email protected]> [mani: Switched to API, added bug report, reported-by tags and CCed stable] Signed-off-by: Manivannan Sadhasivam <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-08Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfJakub Kicinski5-23/+15
Daniel Borkmann says: ==================== bpf 2021-12-08 We've added 12 non-merge commits during the last 22 day(s) which contain a total of 29 files changed, 659 insertions(+), 80 deletions(-). The main changes are: 1) Fix an off-by-two error in packet range markings and also add a batch of new tests for coverage of these corner cases, from Maxim Mikityanskiy. 2) Fix a compilation issue on MIPS JIT for R10000 CPUs, from Johan Almbladh. 3) Fix two functional regressions and a build warning related to BTF kfunc for modules, from Kumar Kartikeya Dwivedi. 4) Fix outdated code and docs regarding BPF's migrate_disable() use on non- PREEMPT_RT kernels, from Sebastian Andrzej Siewior. 5) Add missing includes in order to be able to detangle cgroup vs bpf header dependencies, from Jakub Kicinski. 6) Fix regression in BPF sockmap tests caused by missing detachment of progs from sockets when they are removed from the map, from John Fastabend. 7) Fix a missing "no previous prototype" warning in x86 JIT caused by BPF dispatcher, from Björn Töpel. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf: Add selftests to cover packet access corner cases bpf: Fix the off-by-two error in range markings treewide: Add missing includes masked by cgroup -> bpf dependency tools/resolve_btfids: Skip unresolved symbol warning for empty BTF sets bpf: Fix bpf_check_mod_kfunc_call for built-in modules bpf: Make CONFIG_DEBUG_INFO_BTF depend upon CONFIG_BPF_SYSCALL mips, bpf: Fix reference to non-existing Kconfig symbol bpf: Make sure bpf_disable_instrumentation() is safe vs preemption. Documentation/locking/locktypes: Update migrate_disable() bits. bpf, sockmap: Re-evaluate proto ops when psock is removed from sockmap bpf, sockmap: Attach map progs to psock early for feature probes bpf, x86: Fix "no previous prototype" warning ==================== Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2021-12-08PM: runtime: Fix pm_runtime_active() kerneldoc commentRafael J. Wysocki1-1/+1
The kerneldoc comment of pm_runtime_active() does not reflect the behavior of the function, so update it accordingly. Fixes: 403d2d116ec0 ("PM: runtime: Add kerneldoc comments to multiple helpers") Signed-off-by: Rafael J. Wysocki <[email protected]> Reviewed-by: Ulf Hansson <[email protected]>
2021-12-07net: phy: Remove unnecessary indentation in the comments of phy_deviceYanteng Si1-5/+6
Fix warning as: linux-next/Documentation/networking/kapi:122: ./include/linux/phy.h:543: WARNING: Unexpected indentation. linux-next/Documentation/networking/kapi:122: ./include/linux/phy.h:544: WARNING: Block quote ends without a blank line; unexpected unindent. linux-next/Documentation/networking/kapi:122: ./include/linux/phy.h:546: WARNING: Unexpected indentation. Suggested-by: Akira Yokosawa <[email protected]> Signed-off-by: Yanteng Si <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2021-12-06Merge tag 'regulator-fix-v5.16-rc4' of ↵Linus Torvalds1-6/+8
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fix from Mark Brown: "Documentation fix for v5.17. A fix for bitrot in the documentation for protection interrupts that crept in as the code was revised during review" * tag 'regulator-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: Update protection IRQ helper docs
2021-12-05Merge tag 'sched_urgent_for_v5.16_rc4' of ↵Linus Torvalds1-2/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Borislav Petkov: - Properly init uclamp_flags of a runqueue, on first enqueuing - Fix preempt= callback return values - Correct utime/stime resource usage reporting on nohz_full to return the proper times instead of shorter ones * tag 'sched_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/uclamp: Fix rq->uclamp_max not set on first enqueue preempt/dynamic: Fix setup_preempt_mode() return value sched/cputime: Fix getrusage(RUSAGE_THREAD) with nohz_full
2021-12-03treewide: Add missing includes masked by cgroup -> bpf dependencyJakub Kicinski3-2/+2
cgroup.h (therefore swap.h, therefore half of the universe) includes bpf.h which in turn includes module.h and slab.h. Since we're about to get rid of that dependency we need to clean things up. v2: drop the cpu.h include from cacheinfo.h, it's not necessary and it makes riscv sensitive to ordering of include files. Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Acked-by: Krzysztof Wilczyński <[email protected]> Acked-by: Peter Chen <[email protected]> Acked-by: SeongJae Park <[email protected]> Acked-by: Jani Nikula <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]> Link: https://lore.kernel.org/all/[email protected]/ # v1 Link: https://lore.kernel.org/all/[email protected]/ # cacheinfo discussion Link: https://lore.kernel.org/bpf/[email protected]
2021-12-03drivers: soc: xilinx: add xilinx event management driverAbhyuday Godhasara2-0/+38
Xilinx event management driver provides an interface to subscribe or unsubscribe for the event/callback supported by firmware. An agent can use this driver to register for Error Event, Device Event and Suspend callback. This driver only allows one agent per event to do registration. Driver will return an error in case of multiple registration for the same event. This driver gets notification from firmware through TF-A as SGI. During initialization, event manager driver register handler for SGI used for notification. It also provides SGI number info to TF-A by using IOCTL_REGISTER_SGI call to TF-A. After receiving notification from firmware, the driver makes an SMC call to TF-A to get IPI data. From the IPI data provided by TF-A, event manager identified the cause of event and forward that event/callback notification to the respective subscribed driver. After this, in case of Error Event, driver performs unregistration as firmware expecting from agent to do re-registration if the agent wants to get notified on the second occurrence of an error event. Add new IOCTL id IOCTL_REGISTER_SGI = 25 which is used to register SGI on TF-A. Older firmware doesn't have all required support for event handling which is required by the event manager driver. So add check for the register notifier version in the event manager driver. Xilinx event management driver provides support to subscribe for multiple error events with the use of Event Mask in a single call of xlnx_register_event(). Agent driver can provide 'Event' parameter value as ORed of multiple event masks to register single callback for multiple events. For example, to register callback for event=0x1 and event=0x2 for the given node, agent can provide event=0x3 (0x1 | 0x2). It is not possible to register multiple events for different nodes in a single registration call. Also provide support to receive multiple error events as in single notification from firmware and then forward it to subscribed drivers via registered callback one by one. Acked-by: Michal Simek <[email protected]> Signed-off-by: Tejas Patel <[email protected]> Signed-off-by: Rajan Vaja <[email protected]> Signed-off-by: Abhyuday Godhasara <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-02bpf: Make CONFIG_DEBUG_INFO_BTF depend upon CONFIG_BPF_SYSCALLKumar Kartikeya Dwivedi1-4/+10
Vinicius Costa Gomes reported [0] that build fails when CONFIG_DEBUG_INFO_BTF is enabled and CONFIG_BPF_SYSCALL is disabled. This leads to btf.c not being compiled, and then no symbol being present in vmlinux for the declarations in btf.h. Since BTF is not useful without enabling BPF subsystem, disallow this combination. However, theoretically disabling both now could still fail, as the symbol for kfunc_btf_id_list variables is not available. This isn't a problem as the compiler usually optimizes the whole register/unregister call, but at lower optimization levels it can fail the build in linking stage. Fix that by adding dummy variables so that modules taking address of them still work, but the whole thing is a noop. [0]: https://lore.kernel.org/bpf/[email protected] Fixes: 14f267d95fe4 ("bpf: btf: Introduce helpers for dynamic BTF set registration") Reported-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: Kumar Kartikeya Dwivedi <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Song Liu <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2021-12-02Merge tag 'net-5.16-rc4' of ↵Linus Torvalds3-17/+21
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from wireless, and wireguard. Mostly scattered driver changes this week, with one big clump in mv88e6xxx. Nothing of note, really. Current release - regressions: - smc: keep smc_close_final()'s error code during active close Current release - new code bugs: - iwlwifi: various static checker fixes (int overflow, leaks, missing error codes) - rtw89: fix size of firmware header before transfer, avoid crash - mt76: fix timestamp check in tx_status; fix pktid leak; - mscc: ocelot: fix missing unlock on error in ocelot_hwstamp_set() Previous releases - regressions: - smc: fix list corruption in smc_lgr_cleanup_early - ipv4: convert fib_num_tclassid_users to atomic_t Previous releases - always broken: - tls: fix authentication failure in CCM mode - vrf: reset IPCB/IP6CB when processing outbound pkts, prevent incorrect processing - dsa: mv88e6xxx: fixes for various device errata - rds: correct socket tunable error in rds_tcp_tune() - ipv6: fix memory leak in fib6_rule_suppress - wireguard: reset peer src endpoint when netns exits - wireguard: improve resilience to DoS around incoming handshakes - tcp: fix page frag corruption on page fault which involves TCP - mpls: fix missing attributes in delete notifications - mt7915: fix NULL pointer dereference with ad-hoc mode Misc: - rt2x00: be more lenient about EPROTO errors during start - mlx4_en: update reported link modes for 1/10G" * tag 'net-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits) net: dsa: b53: Add SPI ID table gro: Fix inconsistent indenting selftests: net: Correct case name net/rds: correct socket tunable error in rds_tcp_tune() mctp: Don't let RTM_DELROUTE delete local routes net/smc: Keep smc_close_final rc during active close ibmvnic: drop bad optimization in reuse_tx_pools() ibmvnic: drop bad optimization in reuse_rx_pools() net/smc: fix wrong list_del in smc_lgr_cleanup_early Fix Comment of ETH_P_802_3_MIN ethernet: aquantia: Try MAC address from device tree ipv4: convert fib_num_tclassid_users to atomic_t net: avoid uninit-value from tcp_conn_request net: annotate data-races on txq->xmit_lock_owner octeontx2-af: Fix a memleak bug in rvu_mbox_init() net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources() vrf: Reset IPCB/IP6CB when processing outbound pkts in vrf dev xmit net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings() net: dsa: mv88e6xxx: Link in pcs_get_state() if AN is bypassed net: dsa: mv88e6xxx: Fix inband AN for 2500base-x on 88E6393X family ...
2021-12-02HID: add hid_is_usb() function to make it simpler for USB detectionGreg Kroah-Hartman1-0/+5
A number of HID drivers already call hid_is_using_ll_driver() but only for the detection of if this is a USB device or not. Make this more obvious by creating hid_is_usb() and calling the function that way. Also converts the existing hid_is_using_ll_driver() functions to use the new call. Cc: Jiri Kosina <[email protected]> Cc: Benjamin Tissoires <[email protected]> Cc: [email protected] Cc: [email protected] Tested-by: Benjamin Tissoires <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Benjamin Tissoires <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-12-02sched/cputime: Fix getrusage(RUSAGE_THREAD) with nohz_fullFrederic Weisbecker1-2/+3
getrusage(RUSAGE_THREAD) with nohz_full may return shorter utime/stime than the actual time. task_cputime_adjusted() snapshots utime and stime and then adjust their sum to match the scheduler maintained cputime.sum_exec_runtime. Unfortunately in nohz_full, sum_exec_runtime is only updated once per second in the worst case, causing a discrepancy against utime and stime that can be updated anytime by the reader using vtime. To fix this situation, perform an update of cputime.sum_exec_runtime when the cputime snapshot reports the task as actually running while the tick is disabled. The related overhead is then contained within the relevant situations. Reported-by: Hasegawa Hitomi <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]> Signed-off-by: Hasegawa Hitomi <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Masayoshi Mizuma <[email protected]> Acked-by: Phil Auld <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-12-01net: annotate data-races on txq->xmit_lock_ownerEric Dumazet1-6/+13
syzbot found that __dev_queue_xmit() is reading txq->xmit_lock_owner without annotations. No serious issue there, let's document what is happening there. BUG: KCSAN: data-race in __dev_queue_xmit / __dev_queue_xmit write to 0xffff888139d09484 of 4 bytes by interrupt on cpu 0: __netif_tx_unlock include/linux/netdevice.h:4437 [inline] __dev_queue_xmit+0x948/0xf70 net/core/dev.c:4229 dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4265 macvlan_queue_xmit drivers/net/macvlan.c:543 [inline] macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567 __netdev_start_xmit include/linux/netdevice.h:4987 [inline] netdev_start_xmit include/linux/netdevice.h:5001 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3590 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606 sch_direct_xmit+0x1b2/0x7c0 net/sched/sch_generic.c:342 __dev_xmit_skb+0x83d/0x1370 net/core/dev.c:3817 __dev_queue_xmit+0x590/0xf70 net/core/dev.c:4194 dev_queue_xmit+0x13/0x20 net/core/dev.c:4259 neigh_hh_output include/net/neighbour.h:511 [inline] neigh_output include/net/neighbour.h:525 [inline] ip6_finish_output2+0x995/0xbb0 net/ipv6/ip6_output.c:126 __ip6_finish_output net/ipv6/ip6_output.c:191 [inline] ip6_finish_output+0x444/0x4c0 net/ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:450 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0x486/0x610 net/ipv6/ndisc.c:508 ndisc_send_rs+0x3b0/0x3e0 net/ipv6/ndisc.c:702 addrconf_rs_timer+0x370/0x540 net/ipv6/addrconf.c:3898 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1421 expire_timers+0x116/0x240 kernel/time/timer.c:1466 __run_timers+0x368/0x410 kernel/time/timer.c:1734 run_timer_softirq+0x2e/0x60 kernel/time/timer.c:1747 __do_softirq+0x158/0x2de kernel/softirq.c:558 __irq_exit_rcu kernel/softirq.c:636 [inline] irq_exit_rcu+0x37/0x70 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 read to 0xffff888139d09484 of 4 bytes by interrupt on cpu 1: __dev_queue_xmit+0x5e3/0xf70 net/core/dev.c:4213 dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4265 macvlan_queue_xmit drivers/net/macvlan.c:543 [inline] macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567 __netdev_start_xmit include/linux/netdevice.h:4987 [inline] netdev_start_xmit include/linux/netdevice.h:5001 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3590 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606 sch_direct_xmit+0x1b2/0x7c0 net/sched/sch_generic.c:342 __dev_xmit_skb+0x83d/0x1370 net/core/dev.c:3817 __dev_queue_xmit+0x590/0xf70 net/core/dev.c:4194 dev_queue_xmit+0x13/0x20 net/core/dev.c:4259 neigh_resolve_output+0x3db/0x410 net/core/neighbour.c:1523 neigh_output include/net/neighbour.h:527 [inline] ip6_finish_output2+0x9be/0xbb0 net/ipv6/ip6_output.c:126 __ip6_finish_output net/ipv6/ip6_output.c:191 [inline] ip6_finish_output+0x444/0x4c0 net/ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:450 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0x486/0x610 net/ipv6/ndisc.c:508 ndisc_send_rs+0x3b0/0x3e0 net/ipv6/ndisc.c:702 addrconf_rs_timer+0x370/0x540 net/ipv6/addrconf.c:3898 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1421 expire_timers+0x116/0x240 kernel/time/timer.c:1466 __run_timers+0x368/0x410 kernel/time/timer.c:1734 run_timer_softirq+0x2e/0x60 kernel/time/timer.c:1747 __do_softirq+0x158/0x2de kernel/softirq.c:558 __irq_exit_rcu kernel/softirq.c:636 [inline] irq_exit_rcu+0x37/0x70 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 kcsan_setup_watchpoint+0x94/0x420 kernel/kcsan/core.c:443 folio_test_anon include/linux/page-flags.h:581 [inline] PageAnon include/linux/page-flags.h:586 [inline] zap_pte_range+0x5ac/0x10e0 mm/memory.c:1347 zap_pmd_range mm/memory.c:1467 [inline] zap_pud_range mm/memory.c:1496 [inline] zap_p4d_range mm/memory.c:1517 [inline] unmap_page_range+0x2dc/0x3d0 mm/memory.c:1538 unmap_single_vma+0x157/0x210 mm/memory.c:1583 unmap_vmas+0xd0/0x180 mm/memory.c:1615 exit_mmap+0x23d/0x470 mm/mmap.c:3170 __mmput+0x27/0x1b0 kernel/fork.c:1113 mmput+0x3d/0x50 kernel/fork.c:1134 exit_mm+0xdb/0x170 kernel/exit.c:507 do_exit+0x608/0x17a0 kernel/exit.c:819 do_group_exit+0xce/0x180 kernel/exit.c:929 get_signal+0xfc3/0x1550 kernel/signal.c:2852 arch_do_signal_or_restart+0x8c/0x2e0 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x113/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -> 0xffffffff Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 28712 Comm: syz-executor.0 Tainted: G W 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <[email protected]> Reported-by: syzbot <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2021-12-01kprobes: Limit max data_size of the kretprobe instancesMasami Hiramatsu1-0/+2
The 'kprobe::data_size' is unsigned, thus it can not be negative. But if user sets it enough big number (e.g. (size_t)-8), the result of 'data_size + sizeof(struct kretprobe_instance)' becomes smaller than sizeof(struct kretprobe_instance) or zero. In result, the kretprobe_instance are allocated without enough memory, and kretprobe accesses outside of allocated memory. To avoid this issue, introduce a max limitation of the kretprobe::data_size. 4KB per instance should be OK. Link: https://lkml.kernel.org/r/163836995040.432120.10322772773821182925.stgit@devnote2 Cc: [email protected] Fixes: f47cd9b553aa ("kprobes: kretprobe user entry-handler") Reported-by: zhangyue <[email protected]> Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2021-11-30net/mlx5: Fix access to a non-supported registerAya Levin1-1/+4
Validate MRTC register is supported before triggering a delayed work which accesses it. Fixes: 5a1023deeed0 ("net/mlx5: Add periodic update of host time to firmware") Signed-off-by: Aya Levin <[email protected]> Reviewed-by: Gal Pressman <[email protected]> Reviewed-by: Moshe Shemesh <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2021-11-30bpf: Make sure bpf_disable_instrumentation() is safe vs preemption.Sebastian Andrzej Siewior2-17/+2
The initial implementation of migrate_disable() for mainline was a wrapper around preempt_disable(). RT kernels substituted this with a real migrate disable implementation. Later on mainline gained true migrate disable support, but neither documentation nor affected code were updated. Remove stale comments claiming that migrate_disable() is PREEMPT_RT only. Don't use __this_cpu_inc() in the !PREEMPT_RT path because preemption is not disabled and the RMW operation can be preempted. Fixes: 74d862b682f51 ("sched: Make migrate_disable/enable() independent of RT") Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2021-11-29siphash: use _unaligned version by defaultArnd Bergmann1-10/+4
On ARM v6 and later, we define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS because the ordinary load/store instructions (ldr, ldrh, ldrb) can tolerate any misalignment of the memory address. However, load/store double and load/store multiple instructions (ldrd, ldm) may still only be used on memory addresses that are 32-bit aligned, and so we have to use the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS macro with care, or we may end up with a severe performance hit due to alignment traps that require fixups by the kernel. Testing shows that this currently happens with clang-13 but not gcc-11. In theory, any compiler version can produce this bug or other problems, as we are dealing with undefined behavior in C99 even on architectures that support this in hardware, see also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363. Fortunately, the get_unaligned() accessors do the right thing: when building for ARMv6 or later, the compiler will emit unaligned accesses using the ordinary load/store instructions (but avoid the ones that require 32-bit alignment). When building for older ARM, those accessors will emit the appropriate sequence of ldrb/mov/orr instructions. And on architectures that can truly tolerate any kind of misalignment, the get_unaligned() accessors resolve to the leXX_to_cpup accessors that operate on aligned addresses. Since the compiler will in fact emit ldrd or ldm instructions when building this code for ARM v6 or later, the solution is to use the unaligned accessors unconditionally on architectures where this is known to be fast. The _aligned version of the hash function is however still needed to get the best performance on architectures that cannot do any unaligned access in hardware. This new version avoids the undefined behavior and should produce the fastest hash on all architectures we support. Link: https://lore.kernel.org/linux-arm-kernel/[email protected]/ Link: https://lore.kernel.org/linux-crypto/CAK8P3a2KfmmGDbVHULWevB0hv71P2oi2ZCHEAqT=8dQfa0=cqQ@mail.gmail.com/ Reported-by: Ard Biesheuvel <[email protected]> Fixes: 2c956a60778c ("siphash: add cryptographically secure PRF") Signed-off-by: Arnd Bergmann <[email protected]> Reviewed-by: Jason A. Donenfeld <[email protected]> Acked-by: Ard Biesheuvel <[email protected]> Signed-off-by: Jason A. Donenfeld <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2021-11-29Merge 5.16-rc3 into char-misc-nextGreg Kroah-Hartman25-210/+172
We need the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-11-28fpga: region: Use standard dev_release for class driverRuss Weight1-9/+27
The FPGA region class driver data structure is being treated as a managed resource instead of using the standard dev_release call-back function to release the class data structure. This change removes the managed resource code and combines the create() and register() functions into a single register() or register_full() function. The register_full() function accepts an info data structure to provide flexibility in passing optional parameters. The register() function supports the current parameter list for users that don't require the use of optional parameters. Signed-off-by: Russ Weight <[email protected]> Reviewed-by: Xu Yilun <[email protected]> Acked-by: Xu Yilun <[email protected]> Signed-off-by: Moritz Fischer <[email protected]>
2021-11-28fpga: bridge: Use standard dev_release for class driverRuss Weight1-9/+21
The FPGA bridge class driver data structure is being treated as a managed resource instead of using the standard dev_release call-back function to release the class data structure. This change removes the managed resource code and combines the create() and register() functions into a single register() function. Signed-off-by: Russ Weight <[email protected]> Reviewed-by: Xu Yilun <[email protected]> Acked-by: Xu Yilun <[email protected]> Signed-off-by: Moritz Fischer <[email protected]>
2021-11-28fpga: mgr: Use standard dev_release for class driverRuss Weight1-21/+41
The FPGA manager class driver data structure is being treated as a managed resource instead of using the standard dev_release call-back function to release the class data structure. This change removes the managed resource code for the freeing of the class data structure and combines the create() and register() functions into a single register() or register_full() function. The register_full() function accepts an info data structure to provide flexibility in passing optional parameters. The register() function supports the current parameter list for users that don't require the use of optional parameters. The devm_fpga_mgr_register() function is retained, and the devm_fpga_mgr_register_full() function is added. Signed-off-by: Russ Weight <[email protected]> Reviewed-by: Xu Yilun <[email protected]> Acked-by: Xu Yilun <[email protected]> Signed-off-by: Moritz Fischer <[email protected]>
2021-11-28Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds1-2/+0
Pull vhost,virtio,vdpa bugfixes from Michael Tsirkin: "Misc fixes all over the place. Revert of virtio used length validation series: the approach taken does not seem to work, breaking too many guests in the process. We'll need to do length validation using some other approach" [ This merge also ends up reverting commit f7a36b03a732 ("vsock/virtio: suppress used length validation"), which came in through the networking tree in the meantime, and was part of that whole used length validation series - Linus ] * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vdpa_sim: avoid putting an uninitialized iova_domain vhost-vdpa: clean irqs before reseting vdpa device virtio-blk: modify the value type of num in virtio_queue_rq() vhost/vsock: cleanup removing `len` variable vhost/vsock: fix incorrect used length reported to the guest Revert "virtio_ring: validate used buffer length" Revert "virtio-net: don't let virtio core to validate used length" Revert "virtio-blk: don't let virtio core to validate used length" Revert "virtio-scsi: don't let virtio core to validate used buffer length"
2021-11-27iio: expose shared parameter in IIO_ENUM_AVAILABLEAntoniu Miclaus1-2/+3
The shared parameter should be configurable based on its usage, and not constrained to IIO_SHARED_BY_TYPE. This patch aims to improve the flexibility in using the IIO_ENUM_AVAILABLE define and avoid redefining custom iio enums that expose the shared parameter. An example is the ad5766.c driver where IIO_ENUM_AVAILABLE_SHARED was defined in order to achieve `shared` parameter customization. The current state of the IIO_ENUM_AVAILABLE implementation will imply similar redefinitions each time a driver will require access to the `shared` parameter. An example would be admv1013 driver which will require custom device attribute for the frequency translation modes: Quadrature I/Q mode and Intermediate Frequency mode. Signed-off-by: Antoniu Miclaus <[email protected]> Reviewed-by: Alexandru Ardelean <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Cameron <[email protected]>
2021-11-27iio: buffer-dma: Remove unused iio_buffer_block structPaul Cercueil1-5/+0
This structure was never used anywhere, so it can safely be dropped. It will later be re-introduced as a different structure in a different header. Signed-off-by: Paul Cercueil <[email protected]> Reviewed-by: Alexandru Ardelean <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Cameron <[email protected]>
2021-11-26Merge tag 'net-5.16-rc3' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes, including fixes from netfilter. Current release - regressions: - r8169: fix incorrect mac address assignment - vlan: fix underflow for the real_dev refcnt when vlan creation fails - smc: avoid warning of possible recursive locking Current release - new code bugs: - vsock/virtio: suppress used length validation - neigh: fix crash in v6 module initialization error path Previous releases - regressions: - af_unix: fix change in behavior in read after shutdown - igb: fix netpoll exit with traffic, avoid warning - tls: fix splice_read() when starting mid-record - lan743x: fix deadlock in lan743x_phy_link_status_change() - marvell: prestera: fix bridge port operation Previous releases - always broken: - tcp_cubic: fix spurious Hystart ACK train detections for not-cwnd-limited flows - nexthop: fix refcount issues when replacing IPv6 groups - nexthop: fix null pointer dereference when IPv6 is not enabled - phylink: force link down and retrigger resolve on interface change - mptcp: fix delack timer length calculation and incorrect early clearing - ieee802154: handle iftypes as u32, prevent shift-out-of-bounds - nfc: virtual_ncidev: change default device permissions - netfilter: ctnetlink: fix error codes and flags used for kernel side filtering of dumps - netfilter: flowtable: fix IPv6 tunnel addr match - ncsi: align payload to 32-bit to fix dropped packets - iavf: fix deadlock and loss of config during VF interface reset - ice: avoid bpf_prog refcount underflow - ocelot: fix broken PTP over IP and PTP API violations Misc: - marvell: mvpp2: increase MTU limit when XDP enabled" * tag 'net-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits) net: dsa: microchip: implement multi-bridge support net: mscc: ocelot: correctly report the timestamping RX filters in ethtool net: mscc: ocelot: set up traps for PTP packets net: ptp: add a definition for the UDP port for IEEE 1588 general messages net: mscc: ocelot: create a function that replaces an existing VCAP filter net: mscc: ocelot: don't downgrade timestamping RX filters in SIOCSHWTSTAMP net: hns3: fix incorrect components info of ethtool --reset command net: hns3: fix one incorrect value of page pool info when queried by debugfs net: hns3: add check NULL address for page pool net: hns3: fix VF RSS failed problem after PF enable multi-TCs net: qed: fix the array may be out of bound net/smc: Don't call clcsock shutdown twice when smc shutdown net: vlan: fix underflow for the real_dev refcnt ptp: fix filter names in the documentation ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce() nfc: virtual_ncidev: change default device permissions net/sched: sch_ets: don't peek at classes beyond 'nbands' net: stmmac: Disable Tx queues when reconfiguring the interface selftests: tls: test for correct proto_ops tls: fix replacing proto_ops ...
2021-11-26Merge tag 'acpi-5.16-rc3' of ↵Linus Torvalds1-7/+0
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fixes from Rafael Wysocki: "These fix a NULL pointer dereference in the CPPC library code and a locking issue related to printing the names of ACPI device nodes in the device properties framework. Specifics: - Fix NULL pointer dereference in the CPPC library code occuring on hybrid systems without CPPC support (Rafael Wysocki). - Avoid attempts to acquire a semaphore with interrupts off when printing the names of ACPI device nodes and clean up code on top of that fix (Sakari Ailus)" * tag 'acpi-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: CPPC: Add NULL pointer check to cppc_get_perf() ACPI: Make acpi_node_get_parent() local ACPI: Get acpi_device's parent from the parent field
2021-11-26net: ptp: add a definition for the UDP port for IEEE 1588 general messagesVladimir Oltean1-0/+1
As opposed to event messages (Sync, PdelayReq etc) which require timestamping, general messages (Announce, FollowUp etc) do not. In PTP they are part of different streams of data. IEEE 1588-2008 Annex D.2 "UDP port numbers" states that the UDP destination port assigned by IANA is 319 for event messages, and 320 for general messages. Yet the kernel seems to be missing the definition for general messages. This patch adds it. Signed-off-by: Vladimir Oltean <[email protected]> Acked-by: Richard Cochran <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2021-11-26comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>Ian Abbott1-0/+114
Some of the header files in "drivers/comedi/drivers/" are common enough to be useful to out-of-tree comedi driver modules. Using them for out-of-tree module builds is hampered by the headers being outside the "include/" directory so it is desirable to move them. There are about a half a dozen or so Comedi device drivers that use the "comedi_isadma" module to add ISA DMA support. The macros and declarations to use that module are in the "comedi_isadma.h" header file in the comedi "drivers" directory. Move it into "include/linux/comedi/". Signed-off-by: Ian Abbott <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-11-26comedi: Move "comedi_8254.h" to <linux/comedi/comedi_8254.h>Ian Abbott1-0/+134
Some of the header files in "drivers/comedi/drivers/" are common enough to be useful to out-of-tree comedi driver modules. Using them for out-of-tree module builds is hampered by the headers being outside the "include/" directory so it is desirable to move them. There are about a couple of dozen or so Comedi device drivers that use the "comedi_8254" module to add timers based on the venerable 8254 Programmable Interval Timer chip. The macros and declarations to use that module are in the "comedi_8254.h" header file in the comedi "drivers" directory. Move it into "include/linux/comedi/". Signed-off-by: Ian Abbott <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-11-26comedi: Move and rename "8255.h" to <linux/comedi/comedi_8255.h>Ian Abbott1-0/+42
Some of the header files in "drivers/comedi/drivers/" are common enough to be useful to out-of-tree comedi driver modules. Using them for out-of-tree module builds is hampered by the headers being outside the "include/" directory so it is desirable to move them. There are about a couple of dozen Comedi device drivers that use the "comedi_8255" module to add digital I/O subdevices based on the venerable 8255 Programmable Peripheral Interface chip. The macros and declarations to use that module are in the "8255.h" header file in the comedi "drivers" directory. Move it into "include/linux/comedi/" and rename it to "comedi_8255.h" for naming consistency reasons. Signed-off-by: Ian Abbott <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
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