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 f6653da0ee16..d33ae0b43925 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -619,6 +619,9 @@ 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)
--
2.6.1
--
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
