ASoC: wm8994: Make sure we disable FLL bypass when stopping the FLL

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@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 4cebac4f621569a3695e1a163628a0a81e57a8f2..746d3db6f19ff21b0cdc9995670c4d825ab0bb4b 100644 (file)
--- 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);