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The kernel test robot reports that various drivers have an undefined reference to stmmac_simple_pm_ops. This is caused by EXPORT_SYMBOL_GPL_SIMPLE_DEV_PM_OPS() defining the struct as static and omitting the export when CONFIG_PM=n, unlike DEFINE_SIMPLE_PM_OPS() which still defines the struct non-static. Switch to using DEFINE_SIMPLE_PM_OPS() + EXPORT_SYMBOL_GPL(), which means we always define stmmac_simple_pm_ops, and it will always be visible for dwmac-* to reference whether modular or built-in. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202508132051.a7hJXkrd-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202508132158.dEwQdick-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202508140029.V6tDuUxc-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202508161406.RwQuZBkA-lkp@intel.com/ Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/E1uojpo-00BMoL-4W@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.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 reStructuredText 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.