In mt8188_etdm_clk_src_sel_put() function, val retrieved by FIELD_PREP is shifted to the corresponding bit filed, so it can compare with the register value directly.
Originally, the redundant bit shift of the register value results in the wrong comparison result, so we remove bit shift operation in the patch.
Fixes: 2babb4777489 ("ASoC: mediatek: mt8188: support etdm in platform driver") Signed-off-by: Trevor Wu trevor.wu@mediatek.com --- sound/soc/mediatek/mt8188/mt8188-dai-etdm.c | 8 -------- 1 file changed, 8 deletions(-)
diff --git a/sound/soc/mediatek/mt8188/mt8188-dai-etdm.c b/sound/soc/mediatek/mt8188/mt8188-dai-etdm.c index 071841903c62..1c53d4cb19bb 100644 --- a/sound/soc/mediatek/mt8188/mt8188-dai-etdm.c +++ b/sound/soc/mediatek/mt8188/mt8188-dai-etdm.c @@ -679,7 +679,6 @@ static int mt8188_etdm_clk_src_sel_put(struct snd_kcontrol *kcontrol, unsigned int old_val; unsigned int mask; unsigned int reg; - unsigned int shift;
if (source >= e->items) return -EINVAL; @@ -687,27 +686,22 @@ static int mt8188_etdm_clk_src_sel_put(struct snd_kcontrol *kcontrol, if (!strcmp(kcontrol->id.name, "ETDM_OUT1_Clock_Source")) { reg = ETDM_OUT1_CON4; mask = ETDM_OUT_CON4_CLOCK_MASK; - shift = ETDM_OUT_CON4_CLOCK_SHIFT; val = FIELD_PREP(ETDM_OUT_CON4_CLOCK_MASK, source); } else if (!strcmp(kcontrol->id.name, "ETDM_OUT2_Clock_Source")) { reg = ETDM_OUT2_CON4; mask = ETDM_OUT_CON4_CLOCK_MASK; - shift = ETDM_OUT_CON4_CLOCK_SHIFT; val = FIELD_PREP(ETDM_OUT_CON4_CLOCK_MASK, source); } else if (!strcmp(kcontrol->id.name, "ETDM_OUT3_Clock_Source")) { reg = ETDM_OUT3_CON4; mask = ETDM_OUT_CON4_CLOCK_MASK; - shift = ETDM_OUT_CON4_CLOCK_SHIFT; val = FIELD_PREP(ETDM_OUT_CON4_CLOCK_MASK, source); } else if (!strcmp(kcontrol->id.name, "ETDM_IN1_Clock_Source")) { reg = ETDM_IN1_CON2; mask = ETDM_IN_CON2_CLOCK_MASK; - shift = ETDM_IN_CON2_CLOCK_SHIFT; val = FIELD_PREP(ETDM_IN_CON2_CLOCK_MASK, source); } else if (!strcmp(kcontrol->id.name, "ETDM_IN2_Clock_Source")) { reg = ETDM_IN2_CON2; mask = ETDM_IN_CON2_CLOCK_MASK; - shift = ETDM_IN_CON2_CLOCK_SHIFT; val = FIELD_PREP(ETDM_IN_CON2_CLOCK_MASK, source); } else { return -EINVAL; @@ -715,8 +709,6 @@ static int mt8188_etdm_clk_src_sel_put(struct snd_kcontrol *kcontrol,
regmap_read(afe->regmap, reg, &old_val); old_val &= mask; - old_val >>= shift; - if (old_val == val) return 0;