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ASoC: dwc: correct irq clear method 

commit 4873867e5f2bd90faad861dd94865099fc3140f3 upstream.

from Designware I2S datasheet, tx/rx XRUN irq is cleared by
reading register TOR/ROR, rather than by writing into them.

Signed-off-by: Yitian Bu <yitian.bu@tangramtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yitian Bu 2015-10-02 15:18:41 +08:00 committed by Greg Kroah-Hartman
parent 9f6425cad8
commit b7ab3afe20
1 changed files with 2 additions and 2 deletions
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4
sound/soc/dwc/designware_i2s.c
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@ -100,10 +100,10 @@ static inline void i2s_clear_irqs(struct dw_i2s_dev *dev, u32 stream)
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
for (i = 0; i < 4; i++)
i2s_write_reg(dev->i2s_base, TOR(i), 0);
i2s_read_reg(dev->i2s_base, TOR(i));
} else {
for (i = 0; i < 4; i++)
i2s_write_reg(dev->i2s_base, ROR(i), 0);
i2s_read_reg(dev->i2s_base, ROR(i));
}
}