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95d721398cc7e800e67ad0133b9474df675ca3d1
When a usb device disconnects in a certain way, dwc2_queue_transaction still gets called after dwc2_hcd_cleanup_channels. dwc2_hcd_cleanup_channels does "channel->qh = NULL;" but dwc2_queue_transaction still wants to dereference qh. This adds a check for a null qh. (am from https://patchwork.kernel.org/patch/7245251/) Change-Id: Ia9c7f5febe0bb6f0123cfc85c90beb9fc1d80bdd Signed-off-by: Alexandru M Stan <amstan@chromium.org> Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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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