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7b81376764
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. Acked-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Alexandru M Stan <amstan@chromium.org> [dianders: rebased to mainline] Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Felipe Balbi <felipe.balbi@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.