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    Subject[PATCH 5.10 421/717] dmaengine: ti: k3-udma: Correct normal channel offset when uchan_cnt is not 0
    Date
    From: Peter Ujfalusi <peter.ujfalusi@ti.com>

    [ Upstream commit e2de925bbfe321ba0588c99f577c59386ab1f428 ]

    According to different sections of the TRM, the hchan_cnt of CAP3 includes
    the number of uchan in UDMA, thus the start offset of the normal channels
    are hchan_cnt.

    Fixes: daf4ad0499aa4 ("dmaengine: ti: k3-udma: Query throughput level information from hardware")
    Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
    Link: https://lore.kernel.org/r/20201208090440.31792-2-peter.ujfalusi@ti.com
    Signed-off-by: Vinod Koul <vkoul@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/dma/ti/k3-udma.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
    index 82cf6c77f5c93..d3902784cae24 100644
    --- a/drivers/dma/ti/k3-udma.c
    +++ b/drivers/dma/ti/k3-udma.c
    @@ -3201,8 +3201,7 @@ static int udma_setup_resources(struct udma_dev *ud)
    } else if (UDMA_CAP3_UCHAN_CNT(cap3)) {
    ud->tpl_levels = 3;
    ud->tpl_start_idx[1] = UDMA_CAP3_UCHAN_CNT(cap3);
    - ud->tpl_start_idx[0] = ud->tpl_start_idx[1] +
    - UDMA_CAP3_HCHAN_CNT(cap3);
    + ud->tpl_start_idx[0] = UDMA_CAP3_HCHAN_CNT(cap3);
    } else if (UDMA_CAP3_HCHAN_CNT(cap3)) {
    ud->tpl_levels = 2;
    ud->tpl_start_idx[0] = UDMA_CAP3_HCHAN_CNT(cap3);
    --
    2.27.0


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