From 6755af4bc6a4a4dfa7a39f386feb383d33de7e0a Mon Sep 17 00:00:00 2001
From: Vignesh Raghavendra <vigneshr@ti.com>
Date: Tue, 12 Jan 2021 19:44:03 +0530
Subject: [PATCH] dmaengine: ti: k3-udma: Set rflow count for BCDMA split
 channels

commit aecf9d38361090857aa58708e500ee79bed1e273 upstream.

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>
[s-anna@ti.com: cherry-pick linux-next commit 'aecf9d383610' for v5.12]
Signed-off-by: Suman Anna <s-anna@ti.com>
---
 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 298460438bb4..a1af59d901be 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -4305,6 +4305,7 @@ 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);
