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path: root/Documentation/admin-guide/devices.txt
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2020-08-24devices.txt: fix typo of "ubd" as "udb"Theodore Dubois
Signed-off-by: Theodore Dubois <tblodt@icloud.com> Link: https://lore.kernel.org/r/20200816233823.86316-1-tblodt@icloud.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-27devices.txt: document rfkill allocationPavel Machek
Document rfkill allocation. Signed-off-by: Pavel Machek (CIP) <pavel@denx.de> Link: https://lore.kernel.org/r/20200726075327.GA25647@duo.ucw.cz Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-05Replace HTTP links with HTTPS ones: Documentation/admin-guideAlexander 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 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/20200627072935.62652-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-01-11doc: fix typo of snapshot in documentationJacob Keller
A couple of locations accidentally misspelled snapshot as shapshot. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-14devices.txt: improve entry for comedi (char major 98)Ian Abbott
Describe how the comedi minor device numbers are split across comedi devices and comedi subdevices. Replace the current, long dead URL with an official URL for the Comedi project. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-07-03serial: mpsc: Remove obsolete MPSC driverMark Greer
Support for the Marvell MV64x60 line of bridge chips that contained MPSC controllers has been removed and there are no other components that have that controller so remove its driver. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Link: https://lore.kernel.org/r/20190626160553.28518-1-mgreer@animalcreek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-21vt: add /dev/vcsu* to devices.txtNicolas Pitre
Also mention that the traditional devices provide glyph values whereas /dev/vcsu* is unicode based. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Nicolas Pitre <nico@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-17char_dev: extend dynamic allocation of majors into a higher rangeLogan Gunthorpe
We've run into problems with running out of dynamicly assign char device majors particullarly on automated test systems with all-yes-configs. Roughly 40 dynamic assignments can be made with such kernels at this time while space is reserved for only 20. Currently, the kernel only prints a warning when dynamic allocation overflows the reserved region. And when this happens drivers that have fixed assignments can randomly fail depending on the order of initialization of other drivers. Thus, adding a new char device can cause unexpected failures in completely unrelated parts of the kernel. This patch solves the problem by extending dynamic major number allocations down from 511 once the 234-254 region fills up. Fixed majors already exist above 255 so the infrastructure to support high number majors is already in place. The patch reserves an additional 128 major numbers which should hopefully last us a while. Kernels that don't require more than 20 dynamic majors assigned (which is pretty typical) should not be affected by this change. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Linus Walleij <linus.walleij@linaro.org> Link: https://lkml.org/lkml/2017/6/4/107 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-18vhost/vsock: use static minor numberStefan Hajnoczi
Vhost-vsock is a software device so there is no probe call that causes the driver to register its misc char device node. This creates a chicken and egg problem: userspace applications must open /dev/vhost-vsock to use the driver but the file doesn't exist until the kernel module has been loaded. Use the devname modalias mechanism so that /dev/vhost-vsock is created at boot. The vhost_vsock kernel module is automatically loaded when the first application opens /dev/host-vsock. Note that the "reserved for local use" range in Documentation/admin-guide/devices.txt is incorrect. The userio driver already occupies part of that range. I've updated the documentation accordingly. Cc: device@lanana.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-03Documentation/admin-guide: split the device list to a separate fileJani Nikula
Include the literal device list from a separate file. This helps the pdf build. Signed-off-by: Jani Nikula <jani.nikula@intel.com>