From 424fe7edbed18d47f7b97f7e1322a6f8969b77ae Mon Sep 17 00:00:00 2001
From: Olivier Moysan <olivier.moysan@foss.st.com>
Date: Wed, 17 Nov 2021 11:44:04 +0100
Subject: [PATCH] ASoC: stm32: i2s: fix 32 bits channel length without mclk
Git-commit: 424fe7edbed18d47f7b97f7e1322a6f8969b77ae
Patch-mainline: v5.16-rc3
References: git-fixes
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>
Link: https://lore.kernel.org/r/20211117104404.3832-1-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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)
--
2.26.2