The last param set in a transfer should always be pointing to dummy param set in non-cyclic mode. When system wakes from low power state EDMA PARAM slots may be reset to random values. Hence, re-initialize dummy slot to dummy param set on system resume. Signed-off-by: Vignesh R <vigneshr@xxxxxx> Acked-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx> --- drivers/dma/edma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 77242b37ef87..3879f80a4815 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -2451,6 +2451,9 @@ static int edma_pm_resume(struct device *dev) int i; s8 (*queue_priority_mapping)[2]; + /* re initialize dummy slot to dummy param set */ + edma_write_slot(ecc, ecc->dummy_slot, &dummy_paramset); + queue_priority_mapping = ecc->info->queue_priority_mapping; /* Event queue priority mapping */ -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
