int of_overlay_fdt_apply_kunit(struct kunit *test, void *overlay_fdt,
u32 overlay_fdt_size, int *ovcs_id); #else
staticinlineint
of_overlay_fdt_apply_kunit(struct kunit *test, void *overlay_fdt,
u32 overlay_fdt_size, int *ovcs_id)
{
kunit_skip(test, "requires CONFIG_OF and CONFIG_OF_OVERLAY and CONFIG_OF_EARLY_FLATTREE for root node"); return -EINVAL;
}
#endif
/** * __of_overlay_apply_kunit() - Test managed of_overlay_fdt_apply() variant * @test: test context * @overlay_begin: start address of overlay to apply * @overlay_end: end address of overlay to apply * * This is mostly internal API. See of_overlay_apply_kunit() for the wrapper * that makes this easier to use. * * Similar to of_overlay_fdt_apply(), except the overlay is managed by the test * case and is automatically removed with of_overlay_remove() after the test * case concludes. * * Return: 0 on success, negative errno on failure
*/ staticinlineint __of_overlay_apply_kunit(struct kunit *test,
u8 *overlay_begin, const u8 *overlay_end)
{ int unused;
/** * of_overlay_apply_kunit() - Test managed of_overlay_fdt_apply() for built-in overlays * @test: test context * @overlay_name: name of overlay to apply * * This macro is used to apply a device tree overlay built with the * cmd_dt_S_dtbo rule in scripts/Makefile.lib that has been compiled into the * kernel image or KUnit test module. The overlay is automatically removed when * the test is finished. * * Unit tests that need device tree nodes should compile an overlay file with * @overlay_name\.dtbo.o in their Makefile along with their unit test and then * load the overlay during their test. The @overlay_name matches the filename * of the overlay without the dtbo filename extension. If CONFIG_OF_OVERLAY is * not enabled, the @test will be skipped. * * In the Makefile * * .. code-block:: none * * obj-$(CONFIG_OF_OVERLAY_KUNIT_TEST) += overlay_test.o kunit_overlay_test.dtbo.o * * In the test * * .. code-block:: c * * static void of_overlay_kunit_of_overlay_apply(struct kunit *test) * { * struct device_node *np; * * KUNIT_ASSERT_EQ(test, 0, * of_overlay_apply_kunit(test, kunit_overlay_test)); * * np = of_find_node_by_name(NULL, "test-kunit"); * KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np); * of_node_put(np); * } * * Return: 0 on success, negative errno on failure.
*/ #define of_overlay_apply_kunit(test, overlay_name) \
({ \
OF_OVERLAY_DECLARE(overlay_name); \
\
__of_overlay_apply_kunit((test), \
of_overlay_begin(overlay_name), \
of_overlay_end(overlay_name)); \
})
#endif
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