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In cases where the controller somehow fails to write to event buffer memory (e.g. due to incorrect MMU config), the driver would receive all-zero dwc3 events. However, the abnormal event is silently dropped as a regular ep0out event. Add error logs when an unknown endpoint event is received to highlight the anomaly. Signed-off-by: Roy Luo <royluo@google.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20230504000129.728316-1-royluo@google.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.