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[5.11,329/775] dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels

Message ID 20210301161217.875590942@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman March 1, 2021, 4:08 p.m. UTC 
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 mbox series

Patch

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);