ALSA: Au1xpsc: psc not disabled when TX is idle

TX idleness isn't tested, but RX twice. PSC is not disabled when TX is idle
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/soc/au1x/psc-i2s.c

@@ -231,7 +231,7 @@ static int au1xpsc_i2s_stop(struct au1xpsc_audio_data *pscdata, int stype)
 
 	/* if both TX and RX are idle, disable PSC */
 	stat = au_readl(I2S_STAT(pscdata));
-	if (!(stat & (PSC_I2SSTAT_RB | PSC_I2SSTAT_RB))) {
+	if (!(stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB))) {
 		au_writel(0, I2S_CFG(pscdata));
 		au_sync();
 		au_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata));