drm/imx: ipuv3-plane: Make functions static when possible

ipu_plane_state_reset(), ipu_plane_duplicate_state() and
ipu_plane_destroy_state() are only used in this file, so make them static.

This fixes the following sparse warnings:

drivers/gpu/drm/imx/ipuv3-plane.c:275:6: warning: symbol 'ipu_plane_state_reset' was not declared. Should it be static?
drivers/gpu/drm/imx/ipuv3-plane.c:295:24: warning: symbol 'ipu_plane_duplicate_state' was not declared. Should it be static?
drivers/gpu/drm/imx/ipuv3-plane.c:309:6: warning: symbol 'ipu_plane_destroy_state' was not declared. Should it be static?

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index 57ed56d8623fcb67133f1fe79f390ad45c38c257..d9f0a7684ec8923fa498d3289388e3c829ae1856 100644 (file)
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -272,7 +272,7 @@ static void ipu_plane_destroy(struct drm_plane *plane)
        kfree(ipu_plane);
 }
 
-void ipu_plane_state_reset(struct drm_plane *plane)
+static void ipu_plane_state_reset(struct drm_plane *plane)
 {
        struct ipu_plane_state *ipu_state;
 
@@ -292,7 +292,8 @@ void ipu_plane_state_reset(struct drm_plane *plane)
        plane->state = &ipu_state->base;
 }
 
-struct drm_plane_state *ipu_plane_duplicate_state(struct drm_plane *plane)
+static struct drm_plane_state *
+ipu_plane_duplicate_state(struct drm_plane *plane)
 {
        struct ipu_plane_state *state;
 
@@ -306,8 +307,8 @@ struct drm_plane_state *ipu_plane_duplicate_state(struct drm_plane *plane)
        return &state->base;
 }
 
-void ipu_plane_destroy_state(struct drm_plane *plane,
-                            struct drm_plane_state *state)
+static void ipu_plane_destroy_state(struct drm_plane *plane,
+                                   struct drm_plane_state *state)
 {
        struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);