[RFC PATCH] ASOC: sunxi: sun4i_snd_txctrl_on() can be static

[kbuild test robot]

Signed-off-by: Fengguang Wu <fengguang.wu at intel.com>
---
 sun4i-spdif.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index 5fff6f6..cf0ed80 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -204,7 +204,7 @@ static void sun4i_spdif_configure(struct sun4i_spdif_dev *host)
 
 }
 
-void sun4i_snd_txctrl_on(struct snd_pcm_substream *substream,
+static void sun4i_snd_txctrl_on(struct snd_pcm_substream *substream,
 				struct sun4i_spdif_dev *host)
 {
 	if (substream->runtime->channels == 1)
@@ -228,7 +228,7 @@ void sun4i_snd_txctrl_on(struct snd_pcm_substream *substream,
 					SUN4I_SPDIF_CTL_GEN);
 }
 
-void sun4i_snd_txctrl_off(struct snd_pcm_substream *substream,
+static void sun4i_snd_txctrl_off(struct snd_pcm_substream *substream,
 				struct sun4i_spdif_dev *host)
 {
 	/* SPDIF TX DISABLE */