Ensure that 'srcid' is a non-zero value to avoid dtb passing invalid
'srcid' to the driver.
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
drivers/dma/fsl-edma-main.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 0a6e0c4040274..2148a7f1ae843 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -115,6 +115,13 @@ static struct dma_chan *fsl_edma_xlate(struct of_phandle_args *dma_spec,
chan->device->privatecnt++;
fsl_chan = to_fsl_edma_chan(chan);
fsl_chan->srcid = dma_spec->args[1];
+
+ if (!fsl_chan->srcid) {
+ dev_err(&fsl_chan->pdev->dev, "Invalidate srcid %d\n",
+ fsl_chan->srcid);
+ return NULL;
+ }
+
fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid,
true);
mutex_unlock(&fsl_edma->fsl_edma_mutex);
--
2.34.1
