diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 940c678cf012..48c90cbceb06 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -324,19 +324,6 @@ void drm_helper_disable_unused_functions(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_helper_disable_unused_functions);
 
-/**
- * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
- * @encoder: encoder to test
- * @crtc: crtc to test
- *
- * Return false if @encoder can't be driven by @crtc, true otherwise.
- */
-static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
-				struct drm_crtc *crtc)
-{
-	return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
-}
-
 /*
  * Check the CRTC we're going to map each output to vs. its current
  * CRTC.  If they don't match, we have to disable the output and the CRTC
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 4f2e3e82f014..b3865a0e39f4 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -963,6 +963,19 @@ extern int drm_encoder_init(struct drm_device *dev,
 			    const struct drm_encoder_funcs *funcs,
 			    int encoder_type);
 
+/**
+ * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
+ * @encoder: encoder to test
+ * @crtc: crtc to test
+ *
+ * Return false if @encoder can't be driven by @crtc, true otherwise.
+ */
+static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
+				       struct drm_crtc *crtc)
+{
+	return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
+}
+
 extern int drm_plane_init(struct drm_device *dev,
 			  struct drm_plane *plane,
 			  unsigned long possible_crtcs,