[alsa-devel] [PATCH] ASoC: wm8994: Make sure we disable FLL bypass when stopping the FLL

[Mark Brown]

From: Kyung-Kwee Ryu <Kyung-Kwee.Ryu at wolfsonmicro.com>

If FLL bypass is left enabled when we disable the CODEC then the output
clock will be left running which consumes a small amount of additional
current. Only enable bypass when there is an output.

Signed-off-by: Kyung-Kwee Ryu <Kyung-Kwee.Ryu at wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8994.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 4cebac4..746d3db 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -1982,7 +1982,7 @@ static int _wm8994_set_fll(struct snd_soc_codec *codec, int id, int src,
 			    WM8994_FLL1_ENA, 0);
 
 	if (wm8994->fll_byp && src == WM8994_FLL_SRC_BCLK &&
-	    freq_in == freq_out) {
+	    freq_in == freq_out && freq_out) {
 		dev_dbg(codec->dev, "Bypassing FLL%d\n", id + 1);
 		snd_soc_update_bits(codec, WM8994_FLL1_CONTROL_5 + reg_offset,
 				    WM8958_FLL1_BYP, WM8958_FLL1_BYP);
-- 
1.7.10