[PATCH] drm/crtc: constify drm_crtc_mask parameter

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Now that drm_crtc_index takes a const, the same can be done for drm_crtc_mask.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0aa292526567..98ec40713921 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1354,7 +1354,7 @@ static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc)
  * Given a registered CRTC, return the mask bit of that CRTC for an
  * encoder's possible_crtcs field.
  */
-static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
+static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc)
 {
 	return 1 << drm_crtc_index(crtc);
 }
diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
index 387e33a4d6ee..c7438ff0d609 100644
--- a/include/drm/drm_encoder.h
+++ b/include/drm/drm_encoder.h
@@ -189,7 +189,7 @@ static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
 }
 
 /* FIXME: We have an include file mess still, drm_crtc.h needs untangling. */
-static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc);
+static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc);
 
 /**
  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?

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