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[ Upstream commit167657a1bb] Make sure xHC completes the configure endpoint command and xhci driver sets the ring pointers correctly before we create the user readable debugfs file. In theory there was a small gap where a user could have read the debugfs file and cause a NULL pointer dereference error as ring pointer was not yet set, in practise we want this change to simplify the upcoming streams debugfs support. Fixes:02b6fdc2a1("usb: xhci: Add debugfs interface for xHCI driver") Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20200918131752.16488-10-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.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.