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[PATCHv2,3/4] dmaengine: rcar-dmac: Fixed active descriptor initializing

Message ID 20160630151518.32329-4-niklas.soderlund+renesas@ragnatech.se (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Niklas Söderlund June 30, 2016, 3:15 p.m. UTC 
From: Muhammad Hamza Farooq <mfarooq@visteon.com>

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>
---
 drivers/dma/sh/rcar-dmac.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 7f26576..59951fb 100644
--- 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);