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Subject[PATCH 2/3] dmaengine: ti: k3-udma: Workaround for stale transfers
Date
If the client does issue_pending between terminte_all+synchronize and
free_chan_resources, we need to make sure that it has been handled and
cleared up.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/dma/ti/k3-udma.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 1b929f7a84d4..3aede5db9604 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -2842,6 +2842,10 @@ static void udma_free_chan_resources(struct dma_chan *chan)
struct udma_dev *ud = to_udma_dev(chan->device);

udma_terminate_all(chan);
+ if (uc->terminated_desc) {
+ udma_reset_chan(uc, false);
+ udma_reset_rings(uc);
+ }

if (uc->irq_num_ring > 0) {
free_irq(uc->irq_num_ring, uc);
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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