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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Eric Long <eric.long@unisoc.com>,
	Baolin Wang <baolin.wang@linaro.org>,
	Vinod Koul <vkoul@kernel.org>, Sasha Levin <sashal@kernel.org>,
	dmaengine@vger.kernel.org
Subject: [PATCH AUTOSEL 5.1 08/59] dmaengine: sprd: Fix the incorrect start for 2-stage destination channels
Date: Fri, 14 Jun 2019 16:27:52 -0400	[thread overview]
Message-ID: <20190614202843.26941-8-sashal@kernel.org> (raw)
In-Reply-To: <20190614202843.26941-1-sashal@kernel.org>

From: Eric Long <eric.long@unisoc.com>

[ Upstream commit 3d626a97f0303e9c30d063434b749de3f0f91fb5 ]

The 2-stage destination channel will be triggered by source channel
automatically, which means we should not trigger it by software request.

Signed-off-by: Eric Long <eric.long@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/sprd-dma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index 431e289d59a5..0f92e60529d1 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -510,7 +510,9 @@ static void sprd_dma_start(struct sprd_dma_chn *schan)
 	sprd_dma_set_uid(schan);
 	sprd_dma_enable_chn(schan);
 
-	if (schan->dev_id == SPRD_DMA_SOFTWARE_UID)
+	if (schan->dev_id == SPRD_DMA_SOFTWARE_UID &&
+	    schan->chn_mode != SPRD_DMA_DST_CHN0 &&
+	    schan->chn_mode != SPRD_DMA_DST_CHN1)
 		sprd_dma_soft_request(schan);
 }
 
-- 
2.20.1


  parent reply	other threads:[~2019-06-14 20:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190614202843.26941-1-sashal@kernel.org>
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 03/59] dmaengine: jz4780: Fix transfers being ACKed too soon Sasha Levin
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 04/59] dmaengine: dw-axi-dmac: fix null dereference when pointer first is null Sasha Levin
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 05/59] dmaengine: mediatek-cqdma: sleeping in atomic context Sasha Levin
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 06/59] dmaengine: sprd: Fix the possible crash when getting descriptor status Sasha Levin
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 07/59] dmaengine: sprd: Add validation of current descriptor in irq handler Sasha Levin
2019-06-14 20:27 ` Sasha Levin [this message]
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 09/59] dmaengine: sprd: Fix block length overflow Sasha Levin
2019-06-14 20:27 ` [PATCH AUTOSEL 5.1 10/59] dmaengine: sprd: Fix the right place to configure 2-stage transfer Sasha Levin

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