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>

diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index 489a9abf112b1431769fd4822fc4362b0e005c4e..6a530afbb7e987972dcadfb19ced1cdd4787a6c2 100644 (file)
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -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));
        }
 }