[PATCH] drm/rockchip: Constify struct drm_encoder_helper_funcs

[Christophe JAILLET]

'struct drm_encoder_helper_funcs' is not modified in these drivers.

Constifying this structure moves some data to a read-only section, so
increase overall security.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   7458	    552	      0	   8010	   1f4a	drivers/gpu/drm/rockchip/analogix_dp-rockchip.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   7578	    424	      0	   8002	   1f42	drivers/gpu/drm/rockchip/analogix_dp-rockchip.o

Signed-off-by: Christophe JAILLET <christophe.jaillet at wanadoo.fr>
---
Compile tested-only.
---
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 +-
 drivers/gpu/drm/rockchip/inno_hdmi.c            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 362c7951ca4a..d3341edfe4f4 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -262,7 +262,7 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
 	return 0;
 }
 
-static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
+static const struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
 	.mode_fixup = rockchip_dp_drm_encoder_mode_fixup,
 	.mode_set = rockchip_dp_drm_encoder_mode_set,
 	.atomic_enable = rockchip_dp_drm_encoder_enable,
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 2241e53a2946..44ce0f581062 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -545,7 +545,7 @@ inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
 	return 0;
 }
 
-static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
+static const struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
 	.atomic_check	= inno_hdmi_encoder_atomic_check,
 	.atomic_enable	= inno_hdmi_encoder_enable,
 	.atomic_disable	= inno_hdmi_encoder_disable,
-- 
2.45.2