From: Peter Ujfalusi peter.ujfalusi@ti.com
[ Upstream commit c5dbe60664b3660f5ac5854e21273ea2e7ff698f ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/edma.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 85674a8d04368..e508c8c5f3fde 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -2218,9 +2218,6 @@ 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; @@ -2233,6 +2230,12 @@ 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) {