[PATCH 4.19] dmaengine: at_hdmac: Fix memory leak

This fixes memory leak in at_hdmac. Mainline does not have the same problem.

Signed-off-by: Pavel Machek (CIP) pavel@denx.de

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 86427f6ba78c..0847b2055857 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -1714,8 +1714,10 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, atslave->dma_dev = &dmac_pdev->dev;

chan = dma_request_channel(mask, at_dma_filter, atslave); - if (!chan) + if (!chan) { + kfree(atslave); return NULL; + }

atchan = to_at_dma_chan(chan); atchan->per_if = dma_spec->args[0] & 0xff;