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Commit 4873867e authored by Yitian Bu's avatar Yitian Bu Committed by Mark Brown
Browse files

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: default avatarYitian Bu <yitian.bu@tangramtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
parent 6ff33f39

sound/soc/dwc/designware_i2s.c

+2 −2
Original line number Diff line number Diff line
@@ -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));

	}

}