From: Vignesh Raghavendra <vigneshr@ti.com>
To: Peter Ujfalusi <peter.ujfalusi@gmail.com>, Vinod Koul <vkoul@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
<dmaengine@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>
Subject: [PATCH] dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels
Date: Tue, 12 Jan 2021 19:44:03 +0530 [thread overview]
Message-ID: <20210112141403.30286-1-vigneshr@ti.com> (raw)
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>
---
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);
--
2.30.0
next reply other threads:[~2021-01-12 14:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 14:14 Vignesh Raghavendra [this message]
2021-01-12 18:29 ` [PATCH] dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels Péter Ujfalusi
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