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The xhci driver provides xhci_shutdown() to be called with the main usb_hcd (the USB3 roothub) while do reboot. But actually, xhci-plat never call xhci_shutdwon() during reboot because it doesn't use the usb_hcd_platform_shutdown() helper. So we use the usb_hcd_platform_shutdown() for xhci-plat, and the normal shutdown call trace is: kernel_restart -> kernel_restart_prepare -> device_shutdown -> platform_drv_shutdown -> usb_hcd_platform_shutdown -> xhci_shutdown BUG=chrome-os-partner:59111 TEST=reboot the system Change-Id: I9be424257ea6ba1e51521cbdd01f4698ae1752ad Signed-off-by: William wu <wulf@rock-chips.com> Reviewed-on: https://chromium-review.googlesource.com/401119 Commit-Ready: Guenter Roeck <groeck@chromium.org> Tested-by: Guenter Roeck <groeck@chromium.org> Reviewed-by: Guenter Roeck <groeck@chromium.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.
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.