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6ebb449f9f
In preparation for adding a "gadget" bus, this patch reverses the order of registration of udc and gadget devices in usb_add_gadget(). The current code adds the gadget device first, probably because that was more convenient at the time and the order didn't really matter. But with the upcoming change, adding the gadget will cause driver probing to occur. Unwinding that on the error pathway will become much more obtrusive, not to mention the fact that a gadget driver might not work properly before the udc is registered. It's better to register the udc device first, particularly since that doesn't involve a bus or driver binding and therefore is simpler to unwind. For symmetry, the order of unregistration in usb_del_gadget() is likewise reversed. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YmSo6fU1FlNq8cOZ@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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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.
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.