Re: [PATCH v5 1/2] of: kobj: export of_node_ktype for use by modules

Andy Shevchenko <[email protected]> Mon, 20 Jul 2026 14:13:36 +0300

Newsgroups	dev.linux.lists.driver-core,dev.linux.lists.imx,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Organization	Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo
Message-ID	<[email protected]>

On Mon, Jul 20, 2026 at 06:47:29PM +0800, Xu Yang wrote:

> of_node_init() is a static inline that references of_node_ktype when
> CONFIG_OF_KOBJ=y. Any module that calls of_node_init() will therefore
> have an unresolved reference to of_node_ktype at load time, because
> the symbol is defined in drivers/of/kobj.c but was never exported.
> 
> This causes a modpost build error when CONFIG_OF_KOBJ=y and
> CONFIG_DRIVER_PE_KUNIT_TEST=m:
> 
>   ERROR: modpost: "of_node_ktype"
>   [drivers/base/test/property-entry-test.ko] undefined!
> 
> Add EXPORT_SYMBOL_GPL(of_node_ktype) so that GPL-licensed modules
> such as the KUnit property-entry test can call of_node_init() without
> hitting this linker error.

Use special one for KUnits: EXPORT_SYMBOL_IF_KUNIT().

-- 
With Best Regards,
Andy Shevchenko