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Subject[PATCH] ASoC: stm32: i2s: fix 32 bits channel length without mclk
Date
Fix divider calculation in the case of 32 bits channel
configuration, when no master clock is used.

Fixes: e4e6ec7b127c ("ASoC: stm32: Add I2S driver")

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
---
sound/soc/stm/stm32_i2s.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c
index 6254bacad6eb..717f45a83445 100644
--- a/sound/soc/stm/stm32_i2s.c
+++ b/sound/soc/stm/stm32_i2s.c
@@ -700,7 +700,7 @@ static int stm32_i2s_configure_clock(struct snd_soc_dai *cpu_dai,
if (ret < 0)
return ret;

- nb_bits = frame_len * ((cgfr & I2S_CGFR_CHLEN) + 1);
+ nb_bits = frame_len * (FIELD_GET(I2S_CGFR_CHLEN, cgfr) + 1);
ret = stm32_i2s_calc_clk_div(i2s, i2s_clock_rate,
(nb_bits * rate));
if (ret)
--
2.17.1
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