Warning message in case of linking between paRAM slots in different eDMA
controllers.
Signed-off-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 d759abc80bef..b0102984e98d 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -598,6 +598,9 @@ static void edma_free_slot(struct edma_cc *ecc, unsigned slot)
*/
static void edma_link(struct edma_cc *ecc, unsigned from, unsigned to)
{
+ if (unlikely(EDMA_CTLR(from) != EDMA_CTLR(to)))
+ dev_warn(ecc->dev, "Ignoring eDMA instance for linking\n");
+
from = EDMA_CHAN_SLOT(from);
to = EDMA_CHAN_SLOT(to);
if (from >= ecc->num_slots || to >= ecc->num_slots)
--
2.5.2
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