[PATCH v2 2/9] dmaengine: fsl-edma-common: add condition check for fsl_edma_chan_mux

[Robin Gong]

Since next edma3 don't have dmamux, add condition check in the common
fsl_edma_free_chan_resources().

Signed-off-by: Robin Gong <yibin.gong at nxp.com>
---
 drivers/dma/fsl-edma-common.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index ef5294f0..d19e8a8 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -642,7 +642,10 @@ void fsl_edma_free_chan_resources(struct dma_chan *chan)
 
 	spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
 	fsl_chan->edma->drvdata->dis_req(fsl_chan);
-	fsl_edma_chan_mux(fsl_chan, 0, false);
+
+	if (fsl_chan->edma->drvdata->dmamuxs)
+		fsl_edma_chan_mux(fsl_chan, 0, false);
+
 	fsl_chan->edesc = NULL;
 	vchan_get_all_descriptors(&fsl_chan->vchan, &head);
 	fsl_edma_unprep_slave_dma(fsl_chan);
-- 
2.7.4