From: Vignesh Raghavendra vigneshr@ti.com
[ Upstream commit aecf9d38361090857aa58708e500ee79bed1e273 ]
BCDMA RX channels have one flow per channel, therefore set the rflow_cnt to rchan_cnt.
Without this patch, request for BCDMA RX channel allocation fails as rflow_cnt is 0 thus fails to reserve a rflow for the channel.
Fixes: 8844898028d4 ("dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling") Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Acked-by: Peter Ujfalusi peter.ujfalusi@gmail.com Link: https://lore.kernel.org/r/20210112141403.30286-1-vigneshr@ti.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/ti/k3-udma.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index f474a12323354..46bc1a419bdfb 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -4306,6 +4306,7 @@ static int udma_get_mmrs(struct platform_device *pdev, struct udma_dev *ud) ud->bchan_cnt = BCDMA_CAP2_BCHAN_CNT(cap2); ud->tchan_cnt = BCDMA_CAP2_TCHAN_CNT(cap2); ud->rchan_cnt = BCDMA_CAP2_RCHAN_CNT(cap2); + ud->rflow_cnt = ud->rchan_cnt; break; case DMA_TYPE_PKTDMA: cap4 = udma_read(ud->mmrs[MMR_GCFG], 0x30);