If cable disconnects before data stage completion dwc3_remove_requests()
gets called for ep0 in and out but dwc3_ep0_complete_data() does not
get called. dwc3_ep0_complete_data() function resets TRB enqueue count
to 0. As a result upon next cable connect start transfer is called with
wrong TRB address because trb_enqueue is set to 1. Since this TRB was
completed in the past, HWO bit is cleared for this TRB. This results into
usb enumeration failure due to control transfer stall. Fix this issue
by issuing end transfer command on control endpoints after ep0 requests
are removed for IN and OUT and reset trb_enqueue counters to 0.
Change-Id: Ic5364f11372d85ec7c133024dc48bbc5d848ebf4
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.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.
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