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Check for the cold attach (CAS) bit while checking for other usb3 roothub port changes during host resume. The CAS bit is set if a USB 3 device is connected while the host is suspended in such a way it can't perform proper link training and progress the link to the enabled U0 state. If the CAS bit set we want to resume the root hub, and reset and enumerate the newly connected device. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Message-ID: <20230602144009.1225632-3-mathias.nyman@linux.intel.com> 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.