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The kernel robot reports a link failure when activating the FOTG210 host subdriver with =y on a system where the USB host core is a module (CONFIG_USB=m). This is a bit of special case, so mimic the Kconfig incantations from DWC3: let the subdrivers for host or peripheral depend on the host or gadget support being =y or the same as the FOTG210 core itself. This should ensure that either: - The host (CONFIG_USB) or gadget (CONFIG_GADGET) is compiled in and then the FOTG210 can be either module or compiled in. - The host or gadget is modular, and then the FOTG210 module must be a module too, or we cannot resolve the symbols at link time. Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/linux-usb/202211112132.0BUPGKCd-lkp@intel.com/ Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20221111144821.113665-1-linus.walleij@linaro.org 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.