[PATCH v2 2/9] dmaengine: fsl-edma-common: add condition check for fsl_edma_chan_mux
Robin Gong
yibin.gong at nxp.com
Tue Jul 14 13:41:41 EDT 2020
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
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