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correct spelling Documentation: sparc: correct spelling Documentation: driver-api: correct spelling Documentation: admin-guide: correct spelling docs: add workload-tracing document to admin-guide docs/admin-guide/mm: remove useless markup docs/mm: remove useless markup docs/mm: Physical Memory: remove useless markup docs/sp_SP: Add process magic-number translation docs: ftrace: always use canonical ftrace path Doc/damon: fix the data path error dma-buf: Add "dma-buf" to title of documentation ... 2023-02-06Documentation: hid: correct spellingRandy Dunlap Correct spelling problems for Documentation/hid/ as reported by codespell. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20230127064005.1558-11-rdunlap@infradead.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> 2023-01-31docs: ftrace: always use canonical ftrace pathRoss Zwisler The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Many parts of Documentation still reference this older debugfs path, so let's update them to avoid confusion. Signed-off-by: Ross Zwisler <zwisler@google.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20230125213251.2013791-1-zwisler@google.com Signed-off-by: Jonathan Corbet <corbet@lwn.net> 2023-01-18HID: bpf: rework how programs are attached and stored in the kernelBenjamin Tissoires Previously, HID-BPF was relying on a bpf tracing program to be notified when a program was released from userspace. This is error prone, as LLVM sometimes inline the function and sometimes not. So instead of messing up with the bpf prog ref count, we can use the bpf_link concept which actually matches exactly what we want: - a bpf_link represents the fact that a given program is attached to a given HID device - as long as the bpf_link has fd opened (either by the userspace program still being around or by pinning the bpf object in the bpffs), the program stays attached to the HID device - once every user has closed the fd, we get called by hid_bpf_link_release() that we no longer have any users, and we can disconnect the program to the device in 2 passes: first atomically clear the bit saying that the link is active, and then calling release_work in a scheduled work item. This solves entirely the problems of BPF tracing not showing up and is definitely cleaner. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2022-11-15Documentation: add HID-BPF docsBenjamin Tissoires Gives a primer on HID-BPF. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-03-31Documentation: Add leading slash to some pathsMark O'Donovan Change multiple sys/xyz to /sys/xyz Signed-off-by: Mark O'Donovan <shiftee@posteo.net> Link: https://lore.kernel.org/r/20210328152837.73347-1-shiftee@posteo.net Signed-off-by: Jonathan Corbet <corbet@lwn.net> 2021-01-04Documentation: HID: uhid editing & correctionsRandy Dunlap Do basic editing & correction to hid-alps.rst: - correct a file name (.txt -> .rst) - use less hyphenation when not needed - fix grammar & punctuation - fix article adjectives - fix typos/spellos - use HID instead of hid consistently Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: hid-transport editing & correctionsRandy Dunlap Do basic editing & correction to hid-transport.rst: - s/responsible of/responsible for/ - fix grammar & punctuation Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: hid-sensor editing & correctionsRandy Dunlap Do basic editing & correction to hid-sensor.rst: - use HID consistently instead of hid - drop a duplicate word - change article adjective an -> a - fix grammar & punctuation - spell out RW -> read-write - hyphenate multi-word adjectives Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: hidraw editing & correctionsRandy Dunlap Do basic editing & correction to hidraw.rst: - use "hidraw" consistently except at the beginning of a sentence - add archive.org URL for signal11.us since the latter seems to be MIA - use a list for 2 URLs so that they don't run together Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Alan Ott <alan@signal11.us> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: intel-ish-hid editing & correctionsRandy Dunlap Do basic editing & correction to intel-ish-hid.rst: - fix grammar, verb tense, punctutation, and word phrasing - fix spellos - hyphenate multi-word adjectives - collapse 2 spaces to one space in the middle of sentences - use "I2C" instead of lower-case letters (as Linux I2C does) - change space indentation to tab - use HID instead of hid consistently - use a list so that some line items do not run together - use "a UUID" instead of "an UUID" Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: hiddev editing & correctionsRandy Dunlap Do basic editing & correction to hiddev.rst: - use HID instead of hid consistently - add hyphenation of multi-word adjectives - drop a duplicate word - unhyphenate "a priori" Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: amd-sfh-hid editing & correctionsRandy Dunlap Do basic editing & correction to amd-sfh-hid.rst: - fix punctuation - use HID instead of hid consistently - fix grammar, verb tense - fix Block Diagram heading Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2021-01-04Documentation: HID: hid-alps editing & correctionsRandy Dunlap Do basic editing & correction to hid-alps.rst: - fix grammar - fix punctuation spacing Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jonathan Cameron <jic23@kernel.org> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2020-12-16Merge branch 'for-5.11/core' into for-linusJiri Kosina - increase of maximum HID report size to 16KB in order to support some of the modern devices, from Dean Camera - control interface support for hidraw, from Dean Camera - stylus battery reporting improvement, from Dmitry Torokhov 2020-11-27HID: hidraw: Add additional hidraw input/output report ioctls.Dean Camera Currently the hidraw module can only read and write feature HID reports on demand, via dedicated ioctls. Input reports are read from the device through the read() interface, while output reports are written through the write interface(). This is insufficient; it is desirable in many situations to be able to read and write input and output reports through the control interface to cover additional scenarios: - Reading an input report by its report ID, to get initial state - Writing an input report, to set initial input state in the device - Reading an output report by its report ID, to obtain current state - Writing an output report by its report ID, out of band This patch adds these missing ioctl requests to read and write the remaining HID report types. Note that not all HID backends will neccesarily support this (e.g. while the USB link layer supports setting Input reports, others may not). Also included are documentation and example updates. The current hidraw documentation states that feature reports read from the device does *not* include the report ID, however this is not the case and the returned report will have its report ID prepended by conforming HID devices, as the report data sent from the device over the control endpoint must be indentical in format to those sent over the regular transport. Signed-off-by: Dean Camera <dean@fourwalledcubicle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2020-11-03HID: SFH: Add documentationJiri Kosina Add Documentation/hid/amd-sfh-hid.rst file which was by mistake dropped by me when applying the series. Fixes: 302f0dad8c97a11ab ("SFH: Add maintainers and documentation for AMD SFH based on HID framework") Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Originally-by: Sandeep Singh <Sandeep.Singh@amd.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2020-10-22SFH: Add maintainers and documentation for AMD SFH based on HID frameworkSandeep Singh Add Maintainers for AMD SFH(SENSOR FUSION HUB) Solution and work flow document. Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by: Sandeep Singh <sandeep.singh@amd.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 2020-07-13docs: hid: Convert link to httpsAlexander A. Klimov Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200708123613.14368-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net> 2020-07-13Documentation: hid/intel-ish-hid: eliminate duplicated wordRandy Dunlap Drop the doubled word "the". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: linux-input@vger.kernel.org Link: https://lore.kernel.org/r/20200707180414.10467-9-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> 2019-07-15docs: add some documentation dirs to the driver-api bookMauro Carvalho Chehab Those are subsystem docs, with a mix of kABI and user-faced docs. While they're not split, keep the dirs where they are, adding just a pointer to the main index. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 2019-07-11Merge branch 'for-linus' of ↵Linus Torvalds git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID updates from Jiri Kosina: - Documentation conversion to ReST, from Mauro Carvalho Chehab - Wacom MobileStudio Pro support, from Ping Cheng - Wacom 2nd Gen Intuos Pro Small support, from Aaron Armstrong Skomra - assorted small fixes and device ID additions * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: Add another Primax PIXART OEM mouse quirk HID: wacom: generic: add touchring adjustment for 2nd Gen Pro Small docs: hid: convert to ReST HID: remove NO_D3 flag when remove driver HID: wacom: add new MobileStudio Pro support HID: wacom: generic: read the number of expected touches on a per collection basis HID: wacom: generic: support the 'report valid' usage for touch HID: wacom: generic: read HID_DG_CONTACTMAX from any feature report HID: wacom: Add 2nd gen Intuos Pro Small support HID: uclogic: Add support for Ugee Rainbow CV720 HID: logitech-dj: fix return value of logi_dj_recv_query_hidpp_devices HID: logitech-hidpp: HID: make const array consumer_rdesc_start static HID: logitech-dj: make const array template static HID: wacom: correct touch resolution x/y typo HID: wacom: generic: Correct pad syncing HID: wacom: generic: only switch the mode on devices with LEDs HID: logitech-dj: Add usb-id for the 27MHz MX3000 receiver 2019-07-02docs: hid: convert to ReSTMauro Carvalho Chehab Rename the HID documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. While here, fix the sysfs example from hid-sensor.txt, that has a lot of "?" instead of the proper UTF-8 characters that are produced by the tree command. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> 2019-06-20docs: stop suggesting strlcpyStephen Kitt Since strlcpy is deprecated, the documentation shouldn't suggest using it. This patch fixes the examples to use strscpy instead. It also uses sizeof instead of underlying constants as far as possible, to simplify future changes to the corresponding data structures. Signed-off-by: Stephen Kitt <steve@sk2.org> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Federico Vaga <federico.vaga@vaga.pv.it> Signed-off-by: Jonathan Corbet <corbet@lwn.net>