If CONFIG_OF is disabled but we build any driver that tries to
use of_get_display_timing, we get this link error:
ERROR: "of_get_display_timing" [drivers/gpu/drm/rcar-du/rcar-du-drm.ko] undefined!
This adds an empty inline function as an alternative, to avoid changing
each driver using this function when we want to build them without
CONFIG_OF.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
diff --git a/include/video/of_display_timing.h b/include/video/of_display_timing.h
index 79e6697af6cf..02b6eb7c3ded 100644
--- a/include/video/of_display_timing.h
+++ b/include/video/of_display_timing.h
@@ -15,8 +15,17 @@ struct display_timings;
#define OF_USE_NATIVE_MODE -1
+#ifdef CONFIG_OF
int of_get_display_timing(struct device_node *np, const char *name,
struct display_timing *dt);
+#else
+static inline int of_get_display_timing(struct device_node *np, const char *name,
+ struct display_timing *dt)
+{
+ return -ENOSYS;
+}
+
+#endif
struct display_timings *of_get_display_timings(struct device_node *np);
int of_display_timings_exist(struct device_node *np);
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