This is a note to let you know that I've just added the patch titled dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dmaengine-ti-k3-udma-set-rflow-count-for-bcdma-split.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f91f27f7e4634b5d1afa4f78fc31fe1eebc62a8b Author: Vignesh Raghavendra <vigneshr@xxxxxx> Date: Tue Jan 12 19:44:03 2021 +0530 dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels [ 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@xxxxxx> Acked-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx> Link: https://lore.kernel.org/r/20210112141403.30286-1-vigneshr@xxxxxx Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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);