dmaengine: rcar-dmac: Fixed active descriptor initializing

Running descriptor pointer is set to NULL upon freeing resources. Other-
wise, rcar_dmac_issue_pending might not start new transfers

Signed-off-by: Muhammad Hamza Farooq <mfarooq@visteon.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 72e7dab52c483109fc0a5c5469d625fa7d269ca1..561476c1e741866c332fa95f04229af097c1e9a4 100644 (file)
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -990,6 +990,8 @@ static void rcar_dmac_free_chan_resources(struct dma_chan *chan)
        list_splice_init(&rchan->desc.done, &list);
        list_splice_init(&rchan->desc.wait, &list);
 
+       rchan->desc.running = NULL;
+
        list_for_each_entry(desc, &list, node)
                rcar_dmac_realloc_hwdesc(rchan, desc, 0);