mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-03 09:41:54 +09:00
f061f43d74
In some cases the port of an hub needs to be disabled or switched off and on again. E.g. when the connected device needs to be re-enumerated. Or it needs to be explicitly disabled while the rest of the usb tree stays working. For this purpose this patch adds an sysfs switch to enable/disable the port on any hub. In the case the hub is supporting power switching, the power line will be disabled to the connected device. When the port gets disabled, the associated device gets disconnected and removed from the logical usb tree. No further device will be enumerated on that port until the port gets enabled again. Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220607114522.3359148-1-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.