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authorOlivier Moysan <olivier.moysan@st.com>2019-02-26 14:51:10 +0100
committerMark Brown <broonie@kernel.org>2019-02-26 15:42:10 +0000
commit7b6b0049e2b70d103adf1b7d0320802f70ddceca (patch)
tree946c00851c3290ef2e7c1176eca141696565d06d /sound/soc
parent3005decf4fe43e65d882dce838716bd6715757c1 (diff)
downloadlinux-stericsson-7b6b0049e2b70d103adf1b7d0320802f70ddceca.tar.gz
ASoC: stm32: i2s: skip useless write in slave mode
Dummy write in capture master mode is used to gate bus clocks. This write is useless in slave mode as the clocks are not managed by slave. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/stm/stm32_i2s.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c
index 42ce87a35104..47c334de6b09 100644
--- a/sound/soc/stm/stm32_i2s.c
+++ b/sound/soc/stm/stm32_i2s.c
@@ -623,8 +623,8 @@ static int stm32_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
} else {
ier = I2S_IER_OVRIE;
- if (i2s->refcount == 1)
- /* dummy write to trigger capture */
+ if (STM32_I2S_IS_MASTER(i2s) && i2s->refcount == 1)
+ /* dummy write to gate bus clocks */
regmap_write(i2s->regmap,
STM32_I2S_TXDR_REG, 0);
}