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

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[ 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>
This commit is contained in:
Peter Ujfalusi 2019-08-23 15:56:14 +03:00 • committed by Greg Kroah-Hartman
parent b8c11e01be
commit 77a4084872
1 changed files with 6 additions and 3 deletions
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9
drivers/dma/edma.c
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@ -2218,9 +2218,6 @@ static int edma_probe(struct platform_device *pdev)
ecc->default_queue = info->default_queue; ecc->default_queue = info->default_queue;
for (i = 0; i < ecc->num_slots; i++)
edma_write_slot(ecc, i, &dummy_paramset);
if (info->rsv) { if (info->rsv) {
/* Set the reserved slots in inuse list */ /* Set the reserved slots in inuse list */
rsv_slots = info->rsv->rsv_slots; 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 */ /* Clear the xbar mapped channels in unused list */
xbar_chans = info->xbar_chans; xbar_chans = info->xbar_chans;
if (xbar_chans) { if (xbar_chans) {