[PATCH 2/2] of: fix unittest build without CONFIG_OF_OVERLAY

[Arnd Bergmann]

We get a link error when the new tests are used by overlays
are not:

drivers/of/built-in.o: In function `unflatten_device_tree':
(.init.text+0x967): undefined reference to `unittest_unflatten_overlay_base'

This makes the #ifdef check match the symbols that lead to building
the unittest_unflatten_overlay_base function.

Fixes: 81d0848fc8d2 ("of: Add unit tests for applying overlays")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/of/of_private.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index de5c604f5cc4..4ebb0149d118 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -55,7 +55,7 @@ static inline int of_property_notify(int action, struct device_node *np,
 }
 #endif /* CONFIG_OF_DYNAMIC */
 
-#ifdef CONFIG_OF_UNITTEST
+#if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY)
 extern void __init unittest_unflatten_overlay_base(void);
 #else
 static inline void unittest_unflatten_overlay_base(void) {};
-- 
2.9.0