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2021-11-29block: only allocate poll_stats if there's a user of themJens Axboe
This is essentially never used, yet it's about 1/3rd of the total queue size. Allocate it when needed, and don't embed it in the queue. Kill the queue flag for this while at it, since we can just check the assigned pointer now. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: cleanup the GENHD_FL_* definitionsChristoph Hellwig
Switch to an enum and tidy up the documentation. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-14-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: remove GENHD_FL_EXT_DEVTChristoph Hellwig
All modern drivers can support extra partitions using the extended dev_t. In fact except for the ioctl method drivers never even see partitions in normal operation. So remove the GENHD_FL_EXT_DEVT and allow extra partitions for all block devices that do support partitions, and require those that do not support partitions to explicit disallow them using GENHD_FL_NO_PART. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-12-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: remove GENHD_FL_SUPPRESS_PARTITION_INFOChristoph Hellwig
This flag is not set directly anywhere and only inherited from GENHD_FL_HIDDEN. Just check for GENHD_FL_HIDDEN instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-11-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: rename GENHD_FL_NO_PART_SCAN to GENHD_FL_NO_PARTChristoph Hellwig
The GENHD_FL_NO_PART_SCAN controls more than just partitions canning, so rename it to GENHD_FL_NO_PART. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20211122130625.1136848-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: remove GENHD_FL_CDChristoph Hellwig
GENHD_FL_CD marks a gendisk as a vaguely CD-ROM like device. Besides being used internally inside of sunvdc.c an xen-blkfront it is used by xen-blkback as a hint to claim a device exported to a guest is a CD-ROM like device. Just check for disk->cdi instead which is the right indicator for "real" CD-ROM or DVD drivers. This will miss the paravirtualized guest drivers, but those make little sense to report anyway. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: move GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE to disk->event_flagsChristoph Hellwig
GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE is all about the event reporting mechanism, so move it to the event_flags field. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: move GENHD_FL_NATIVE_CAPACITY to disk->stateChristoph Hellwig
The flag to indicate an unlocked native capacity is dynamic state, not a driver capability flag, so move it to disk->state. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: remove rq_flush_dcache_pagesChristoph Hellwig
This function is trivial, and flush_dcache_page is always defined, so just open code it in the 2.5 callers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20211117061404.331732-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29block: move blk_rq_err_bytes to scsiChristoph Hellwig
blk_rq_err_bytes is only used by the scsi midlayer, so move it there. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20211117061404.331732-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-29mfd: ti_am335x_tscadc: Drop the CNTRLREG_TSC_8WIRE macroDario Binacchi
In TI's reference manual description for the `AFE_Pen_Ctrl' bit-field of the TSC's CTRL register, there is no mention of 8-wire touchscreens. Even commit f0933a60d190 ("mfd: ti_am335x_tscadc: Update logic in CTRL register for 5-wire TS") says that the value of this bit-field must be the same for 4-wire and 8-wire touchscreens. So let's remove the CNTRLREG_TSC_8WIRE macro to avoid misunderstandings. Signed-off-by: Dario Binacchi <dariobin@libero.it> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211125224642.21011-5-dariobin@libero.it
2021-11-29net: dsa: ocelot: felix: utilize shared mscc-miim driver for indirect MDIO ↵Colin Foster
access Switch to a shared MDIO access implementation by way of the mdio-mscc-miim driver. Signed-off-by: Colin Foster <colin.foster@in-advantage.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-29spi: pxa2xx: Get rid of unused enable_loopback memberAndy Shevchenko
There is no user of the enable_loopback member in the struct pxa2xx_spi_chip. Remote this legacy member completely. The mentioned in the documentation the testing phase can be performed with spidev_test tool. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20211123192723.44537-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-29spi: pxa2xx: Get rid of unused ->cs_control()Andy Shevchenko
Since the last user of the custom ->cs_control() gone, we may get rid of this legacy API completely. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20211123192723.44537-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-29mfd: bd70528: Drop BD70528 supportMatti Vaittinen
The only known BD70528 use-cases are such that the PMIC is controlled from separate MCU which is not running Linux. I am not aware of any Linux driver users. Furthermore, it seems there is no demand for this IC. Let's ease the maintenance burden and drop the driver. We can always add it back if there is sudden need for it. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/cf7dfd98b3403ad363b2b48b57bdbfd57a6416cb.1637066805.git.matti.vaittinen@fi.rohmeurope.com
2021-11-29Merge 5.16-rc3 into char-misc-nextGreg Kroah-Hartman
We need the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-28fpga: region: Use standard dev_release for class driverRuss Weight
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 <russell.h.weight@intel.com> Reviewed-by: Xu Yilun <yilun.xu@intel.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2021-11-28fpga: bridge: Use standard dev_release for class driverRuss Weight
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 <russell.h.weight@intel.com> Reviewed-by: Xu Yilun <yilun.xu@intel.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2021-11-28fpga: mgr: Use standard dev_release for class driverRuss Weight
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 <russell.h.weight@intel.com> Reviewed-by: Xu Yilun <yilun.xu@intel.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2021-11-28ieee80211: change HE nominal packet padding value definesMiri Korenblit
It's easier to use and understand, and to extend for EHT later, if we use the values here instead of the shifted values. Unfortunately, we need to add _POS so that we can use it in places like iwlwifi/mvm where constants are needed. While at it, fix the typo ("NOMIMAL") which also helps catch any conflicts. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://lore.kernel.org/r/20211126104817.7c29a05b8eb5.I2ca9faf06e177e3035bec91e2ae53c2f91d41774@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-28Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
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 Miclaus
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 <antoniu.miclaus@analog.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com> Link: https://lore.kernel.org/r/20211119085627.6348-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-11-27iio: buffer-dma: Remove unused iio_buffer_block structPaul Cercueil
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 <paul@crapouillou.net> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com> Link: https://lore.kernel.org/r/20211115141925.60164-3-paul@crapouillou.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-11-27drm: Move nomodeset kernel parameter to the DRM subsystemJavier Martinez Canillas
The "nomodeset" kernel cmdline parameter is handled by the vgacon driver but the exported vgacon_text_force() symbol is only used by DRM drivers. It makes much more sense for the parameter logic to be in the subsystem of the drivers that are making use of it. Let's move the vgacon_text_force() function and related logic to the DRM subsystem. While doing that, rename it to drm_firmware_drivers_only() and make it return true if "nomodeset" was used and false otherwise. This is a better description of the condition that the drivers are testing for. Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-4-javierm@redhat.com
2021-11-27kobject: Replace kernel.h with the necessary inclusionsAndy Shevchenko
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 <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20211110103128.59888-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-27Merge tag 'v5.16-rc2' into develLinus Walleij
Linux 5.16-rc2 is needed because nonurgent fixes headed for next are strongly textually dependent on a fix that was applied for rc2. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-11-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
drivers/net/ipa/ipa_main.c 8afc7e471ad3 ("net: ipa: separate disabling setup from modem stop") 76b5fbcd6b47 ("net: ipa: kill ipa_modem_init()") Duplicated include, drop one. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-26Merge tag 'net-5.16-rc3' of ↵Linus Torvalds
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 Torvalds
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 Oltean
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 <vladimir.oltean@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-26mei: bus: add client dma interfaceAlexander Usyskin
Expose the client dma mapping via mei client bus interface. The client dma has to be mapped before the device is enabled, therefore we need to create device linking already during mapping and we need to unmap after the client is disable hence we need to postpone the unlink and flush till unmapping or when destroying the device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Co-developed-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210420172755.12178-1-emmanuel.grumbach@intel.com Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20211112062814.7502-1-emmanuel.grumbach@intel.com
2021-11-26comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>Ian Abbott
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 <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20211117120604.117740-6-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26comedi: Move "comedi_8254.h" to <linux/comedi/comedi_8254.h>Ian Abbott
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 <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20211117120604.117740-5-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26comedi: Move and rename "8255.h" to <linux/comedi/comedi_8255.h>Ian Abbott
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 <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20211117120604.117740-4-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26comedi: Move the main COMEDI headersIan Abbott
Move the main COMEDI driver headers out of "drivers/comedi/" into new directory "include/linux/comedi/". These are "comedidev.h", "comedilib.h", "comedi_pci.h", "comedi_pcmcia.h", and "comedi_usb.h". Additionally, move the user-space API header "comedi.h" into "include/uapi/linux/" and add "WITH Linux-syscall-note" to its SPDX-License-Identifier. Update the "COMEDI DRIVERS" section of the MAINTAINERS file to account for these changes. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/20211117120604.117740-2-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: reformat TTY_DRIVER_ flags into kernel-docJiri Slaby
We want to reference TTY_DRIVER_* flags in Documentation/ later in this series. But the current documentation in the TTY_DRIVER_*'s header does not allow that. Reformat it to kernel-doc using "DOC" directive and line-feeds, so that we can include it as it is. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-11-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: reformat tty_struct::flags into kernel-docJiri Slaby
Move the partial tty_struct::flags documentation from tty_ldisc to the tty.h header and combine it with the one-liners present there. Convert all those to kernel-doc. This way, we can simply reference the documentation in Documentation while the text is still along the definitions. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-10-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: combine tty_ldisc_ops docs into kernel-docJiri Slaby
In Documentation/driver-api/serial/tty.rst, there are duplicated texts about some struct tty_ldisc_ops' hooks. Combine them into existing kernel-doc comments of struct tty_ldisc_ops and drop them from the Documentation/. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-9-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: combine tty_operations triple docs into kernel-docJiri Slaby
In Documentation/driver-api/serial/tty.rst, there are triplicated texts about some struct tty_operations' hooks. Combine them into existing kernel-doc comments of struct tty_operations and drop them from the Documentation/. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-8-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: add kernel-doc for tty_ldisc_opsJiri Slaby
tty_ldisc_ops structure was already partially documented in a standalone comment in the header beginning. Move it right before the structure and reformat it so it complies to kernel-doc. That way, we can include it in Documentation/ later in this series. And add the documentation for the members where missing too. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-7-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: add kernel-doc for tty_port_operationsJiri Slaby
tty_port_operations used to have only comments along its members. Convert them into proper kernel-doc comments in front of the structure. And add some more explanation to them where needed. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-6-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: add kernel-doc for tty_operationsJiri Slaby
tty_operations structure was already documented in a standalone comment in the header beginning. Move it right before the structure and reformat it so it complies to kernel-doc. That way, we can include it in Documentation/ later in this series. Note that we named proc_show's parameters, so that we can reference them in the text. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-5-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: add kernel-doc for tty_driverJiri Slaby
tty_driver used to have only short comments along its members. Convert them into proper kernel-doc comments in front of the structure. And add some more explanation to them where needed. The whole structure handling is documented at the end too. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-4-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: add kernel-doc for tty_portJiri Slaby
tty_port used to have only short comments along its members. Convert them into proper kernel-doc comments in front of the structure. And add some more explanation to them where needed. The whole structure purpose and handling is documented at the end too -- some pieces of preexisting text moved to this place. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-3-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26tty: finish kernel-doc of tty_struct membersJiri Slaby
There are already pieces of kernel-doc documentation for struct tty_struct in tty.h. Finish the documentation for the members which were undocumented yet. It also includes tuning the already existing pieces like flow and ctrl, especially adding highlights to them. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211126081611.11001-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26include/linux/byteorder/generic.h: fix index variablesHeinrich Schuchardt
In cpu_to_be32_array() and be32_to_cpu_array() the length of the array is given by variable len of type size_t. An index variable of type int is used to iterate over the array. This is bound to fail for len > INT_MAX and lets GCC add instructions for sign extension. Correct the type of the index variable. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Link: https://lore.kernel.org/r/20210523204958.64575-1-xypron.glpk@gmx.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-25net: optimize skb_postpull_rcsum()Eric Dumazet
Remove one pair of add/adc instructions and their dependency against carry flag. We can leverage third argument to csum_partial(): X = csum_block_sub(X, csum_partial(start, len, 0), 0); --> X = csum_block_add(X, ~csum_partial(start, len, 0), 0); --> X = ~csum_partial(start, len, ~X); Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-25Merge tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecacheLinus Torvalds
Pull folio fixes from Matthew Wilcox: "In the course of preparing the folio changes for iomap for next merge window, we discovered some problems that would be nice to address now: - Renaming multi-page folios to large folios. mapping_multi_page_folio_support() is just a little too long, so we settled on mapping_large_folio_support(). That meant renaming, eg folio_test_multi() to folio_test_large(). Rename AS_THP_SUPPORT to match - I hadn't included folio wrappers for zero_user_segments(), etc. Also, multi-page^W^W large folio support is now independent of CONFIG_TRANSPARENT_HUGEPAGE, so machines with HIGHMEM always need to fall back to the out-of-line zero_user_segments(). Remove FS_THP_SUPPORT to match - The build bots finally got round to telling me that I missed a couple of architectures when adding flush_dcache_folio(). Christoph suggested that we just add linux/cacheflush.h and not rely on asm-generic/cacheflush.h" * tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache: mm: Add functions to zero portions of a folio fs: Rename AS_THP_SUPPORT and mapping_thp_support fs: Remove FS_THP_SUPPORT mm: Remove folio_test_single mm: Rename folio_test_multi to folio_test_large Add linux/cacheflush.h
2021-11-25tty: remove file from tty_ldisc_ops::ioctl and compat_ioctlJiri Slaby
After the previous patches, noone needs 'file' parameter in neither ioctl hook from tty_ldisc_ops. So remove 'file' from both of them. Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Luiz Augusto von Dentz <luiz.dentz@gmail.com> Cc: Wolfgang Grandegger <wg@grandegger.com> Cc: Marc Kleine-Budde <mkl@pengutronix.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Andreas Koensgen <ajk@comnets.uni-bremen.de> Cc: Paul Mackerras <paulus@samba.org> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> [NFC] Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211122094529.24171-1-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-25tty: drop tty_schedule_flip()Jiri Slaby
Since commit a9c3f68f3cd8d (tty: Fix low_latency BUG) in 2014, tty_flip_buffer_push() is only a wrapper to tty_schedule_flip(). All users were converted in the previous patches, so remove tty_schedule_flip() completely while inlining its body into tty_flip_buffer_push(). One less exported function. Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20211122111648.30379-4-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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