[PATCH v1 2/9] dmaengine: fsl-edma-common: add condition check for fsl_edma_chan_mux
From: Robin Gong <hidden>
Date: 2020-07-02 06:53:53
Also in:
dmaengine, linux-devicetree, lkml
Subsystem:
dma generic offload engine subsystem, freescale edma driver, the rest · Maintainers:
Vinod Koul, Frank Li, Linus Torvalds
Since next edma3 don't have dmamux, add condition check in the common fsl_edma_free_chan_resources(). Signed-off-by: Robin Gong <redacted> --- 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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