ring_idx was not correctly assigned in case of tflow_id is zero. Which leads to wrong pairing of DMA for drivers like OSPI.

Fixes: 4312a1dfca26 ("dma: ti: k3-udma: Use ring_idx to pair k3 nav rings") Reviewed-by: Jai Luthra j-luthra@ti.com Signed-off-by: Udit Kumar u-kumar1@ti.com --- Changelog Changes in v2 - Removed Trailing quote in subject line - Picked Reviewed-by Tag from Jai link to v1 https://lore.kernel.org/all/20240221072825.3645303-1-u-kumar1@ti.com/

drivers/dma/ti/k3-udma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index eea9ec9659..39866ffff8 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -884,10 +884,10 @@ static int udma_alloc_tx_resources(struct udma_chan *uc) return ret;

tchan = uc->tchan; - if (tchan->tflow_id >= 0) + if (tchan->tflow_id > 0) ring_idx = tchan->tflow_id; else - ring_idx = ud->bchan_cnt + tchan->id; + ring_idx = tchan->id;

ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, ring_idx, -1, &uc->tchan->t_ring,

base-commit: 1817afe30f1549d4d2145bd35de0427e9a7bfdfb