dmaengine: ti: edma: Do not reset reserved paRAM slots

Skip resetting paRAM slots marked as reserved as they might be used by
other cores.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190823125618.8133-2-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index 54895112ba59..1aae95cc0d4b 100644
--- a/drivers/dma/ti/edma.c
+++ b/drivers/dma/ti/edma.c
@@ -2338,9 +2338,6 @@ static int edma_probe(struct platform_device *pdev)
 
         ecc->default_queue = info->default_queue;
 
-        for (i = 0; i < ecc->num_slots; i++)
-                edma_write_slot(ecc, i, &dummy_paramset);
-
         if (info->rsv) {
                 /* Set the reserved slots in inuse list */
                 rsv_slots = info->rsv->rsv_slots;
@@ -2353,6 +2350,12 @@ static int edma_probe(struct platform_device *pdev)
                 }
         }
 
+        for (i = 0; i < ecc->num_slots; i++) {
+                /* Reset only unused - not reserved - paRAM slots */
+                if (!test_bit(i, ecc->slot_inuse))
+                        edma_write_slot(ecc, i, &dummy_paramset);
+        }
+
         /* Clear the xbar mapped channels in unused list */
         xbar_chans = info->xbar_chans;
         if (xbar_chans) {