[alsa-devel] [PATCH 1/5] OMAP2/3: mcbsp: Check McBSP port number in CLKR/FSR mux callback

[Peter Ujfalusi]

CLKR/FSR mux is only possible on port 1.
Make sure that we only change the mux if the call is made with the
correct mcbsp device.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
 arch/arm/mach-omap2/mcbsp.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 829f4c7..269765c 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -38,8 +38,13 @@
 static int omap2_mcbsp1_mux_rx_clk(struct device *dev, const char *signal,
 				   const char *src)
 {
+	struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
 	u32 v;
 
+	/* Only McBSP1 have 6 pin configuration (CLKR/FSR source selectable) */
+	if (mcbsp->id != 0)
+		return -EINVAL;
+
 	v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 
 	if (!strcmp(signal, "clkr")) {
-- 
1.7.8.1