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ASoC: dwc: correct irq clear method 

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>
Cc: stable@vger.kernel.org
This commit is contained in:
Yitian Bu 2015-10-02 15:18:41 +08:00 committed by Mark Brown
parent 6ff33f3902
commit 4873867e5f
1 changed files with 2 additions and 2 deletions
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4
sound/soc/dwc/designware_i2s.c
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@ -131,10 +131,10 @@ 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));
}
}