[alsa-devel] [PATCH] ASoC: omap McBSP: Clear rx_irq at probe time for OMAP4

[Peter Ujfalusi]

On OMAP4 we have one interrupt line per McBSP port.
At proble time tx, and rx irq value will be -ENXIO,
and only the tx irq will get corrected.
In omap_mcbsp_request if the rx_irq is not 0 we proceed,
and try to request the interrupt, which will fail on
OMAP4 (rx_irq == -6).
To avoid this error, clear the rx_irq at probe time
on OMAP4.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
 sound/soc/omap/mcbsp.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index 21dbb05..c3e31de 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -958,8 +958,10 @@ int __devinit omap_mcbsp_init(struct platform_device *pdev)
 	mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");
 
 	/* From OMAP4 there will be a single irq line */
-	if (mcbsp->tx_irq == -ENXIO)
+	if (mcbsp->tx_irq == -ENXIO) {
 		mcbsp->tx_irq = platform_get_irq(pdev, 0);
+		mcbsp->rx_irq = 0;
+	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
 	if (!res) {
-- 
1.7.8.5