The driver was defining two ALSA controls that both change the same register field for the wind noise filter corner frequency. The filter response has two corners, at different frequencies, and the duplicate controls most likely were an attempt to be able to set the value using either of the frequencies.
However, having two controls changing the same field can be problematic and it is unnecessary. Both frequencies are related to each other so setting one implies exactly what the other would be.
Removing a control affects user-side code, but there is currently no known use of the removed control so it would be best to remove it now before it becomes a problem.
Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com Fixes: 2c394ca79604 ("ASoC: Add support for CS42L42 codec") --- sound/soc/codecs/cs42l42.c | 10 ---------- 1 file changed, 10 deletions(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 2db87e3a4dc3..a00dc3c65549 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -425,15 +425,6 @@ static SOC_ENUM_SINGLE_DECL(cs42l42_wnf3_freq_enum, CS42L42_ADC_WNF_HPF_CTL, CS42L42_ADC_WNF_CF_SHIFT, cs42l42_wnf3_freq_text);
-static const char * const cs42l42_wnf05_freq_text[] = { - "280Hz", "315Hz", "350Hz", "385Hz", - "420Hz", "455Hz", "490Hz", "525Hz" -}; - -static SOC_ENUM_SINGLE_DECL(cs42l42_wnf05_freq_enum, CS42L42_ADC_WNF_HPF_CTL, - CS42L42_ADC_WNF_CF_SHIFT, - cs42l42_wnf05_freq_text); - static const struct snd_kcontrol_new cs42l42_snd_controls[] = { /* ADC Volume and Filter Controls */ SOC_SINGLE("ADC Notch Switch", CS42L42_ADC_CTL, @@ -451,7 +442,6 @@ static const struct snd_kcontrol_new cs42l42_snd_controls[] = { CS42L42_ADC_HPF_EN_SHIFT, true, false), SOC_ENUM("HPF Corner Freq", cs42l42_hpf_freq_enum), SOC_ENUM("WNF 3dB Freq", cs42l42_wnf3_freq_enum), - SOC_ENUM("WNF 05dB Freq", cs42l42_wnf05_freq_enum),
/* DAC Volume and Filter Controls */ SOC_SINGLE("DACA Invert Switch", CS42L42_DAC_CTL1,