ARM: McBSP: Fix request for irq in OMAP4

In OMAP4, there is only one irq line for TX and RX paths. Use
the correct irq line to avoid errors at runtime.

Also, request irq line only once (instead of requesting for TX
and RX).

Signed-off-by: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 12 insertions, 8 deletions

diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 4ff7a11b1838..8bbbb93e2128 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -778,14 +778,17 @@ int omap_mcbsp_request(unsigned int id)
                         goto err_clk_disable;
                 }
 
-                init_completion(&mcbsp->rx_irq_completion);
-                err = request_irq(mcbsp->rx_irq, omap_mcbsp_rx_irq_handler,
+                if (mcbsp->rx_irq) {
+                        init_completion(&mcbsp->rx_irq_completion);
+                        err = request_irq(mcbsp->rx_irq,
+                                        omap_mcbsp_rx_irq_handler,
                                         0, "McBSP", (void *)mcbsp);
-                if (err != 0) {
-                        dev_err(mcbsp->dev, "Unable to request RX IRQ %d "
-                                        "for McBSP%d\n", mcbsp->rx_irq,
-                                        mcbsp->id);
-                        goto err_free_irq;
+                        if (err != 0) {
+                                dev_err(mcbsp->dev, "Unable to request RX IRQ %d "
+                                                "for McBSP%d\n", mcbsp->rx_irq,
+                                                mcbsp->id);
+                                goto err_free_irq;
+                        }
                 }
         }
 
@@ -835,7 +838,8 @@ void omap_mcbsp_free(unsigned int id)
 
         if (mcbsp->io_type == OMAP_MCBSP_IRQ_IO) {
                 /* Free IRQs */
-                free_irq(mcbsp->rx_irq, (void *)mcbsp);
+                if (mcbsp->rx_irq)
+                        free_irq(mcbsp->rx_irq, (void *)mcbsp);
                 free_irq(mcbsp->tx_irq, (void *)mcbsp);
         }