3 files changed, 6 insertions, 6 deletions
diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index 9ed735a6cf49..3475c61a5fa0 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -38,7 +38,7 @@
 
 #define SOUND_FS	256
 
-unsigned int rt5514_dmic_delay;
+static unsigned int rt5514_dmic_delay;
 
 static struct snd_soc_jack rockchip_sound_jack;
 
@@ -228,15 +228,15 @@ static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
 	return 0;
 }
 
-static struct snd_soc_ops rockchip_sound_max98357a_ops = {
+static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
 	.hw_params = rockchip_sound_max98357a_hw_params,
 };
 
-static struct snd_soc_ops rockchip_sound_rt5514_ops = {
+static const struct snd_soc_ops rockchip_sound_rt5514_ops = {
 	.hw_params = rockchip_sound_rt5514_hw_params,
 };
 
-static struct snd_soc_ops rockchip_sound_da7219_ops = {
+static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 	.hw_params = rockchip_sound_da7219_hw_params,
 };
 
diff --git a/sound/soc/rockchip/rockchip_max98090.c b/sound/soc/rockchip/rockchip_max98090.c
index e70ffad07184..789d6f1e2b5f 100644
--- a/sound/soc/rockchip/rockchip_max98090.c
+++ b/sound/soc/rockchip/rockchip_max98090.c
@@ -119,7 +119,7 @@ static int rk_aif1_hw_params(struct snd_pcm_substream *substream,
 	return ret;
 }
 
-static struct snd_soc_ops rk_aif1_ops = {
+static const struct snd_soc_ops rk_aif1_ops = {
 	.hw_params = rk_aif1_hw_params,
 };
 
diff --git a/sound/soc/rockchip/rockchip_rt5645.c b/sound/soc/rockchip/rockchip_rt5645.c
index 440a8026346a..9e0c17805807 100644
--- a/sound/soc/rockchip/rockchip_rt5645.c
+++ b/sound/soc/rockchip/rockchip_rt5645.c
@@ -135,7 +135,7 @@ static int rk_init(struct snd_soc_pcm_runtime *runtime)
 				     &headset_jack);
 }
 
-static struct snd_soc_ops rk_aif1_ops = {
+static const struct snd_soc_ops rk_aif1_ops = {
 	.hw_params = rk_aif1_hw_params,
 };