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Message-ID: <1340365364-16276-2-git-send-email-ldewangan@nvidia.com> Date: Fri, 22 Jun 2012 17:12:44 +0530 From: Laxman Dewangan <ldewangan@...dia.com> To: <vinod.koul@...el.com>, <dan.j.williams@...el.com> CC: <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>, Laxman Dewangan <ldewangan@...dia.com> Subject: [PATCH 2/2] dma: tegra: do not set transfer desc flag to DMA_CTRL_ACK in cyclic mode The sound dmaengine pcm driver uses the dma in cyclic mode and it does not ack the transfer descriptor after transfer stops. This may lead to hold that desc in chip's dma driver and does not allow to reuse/free that descriptors. Hence not enabling flag DMA_CTRL_ACK when dma runs in cyclic mode. Signed-off-by: Laxman Dewangan <ldewangan@...dia.com> --- drivers/dma/tegra20-apb-dma.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index b4bd50c..2e4c187 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -1093,7 +1093,7 @@ struct dma_async_tx_descriptor *tegra_dma_prep_dma_cyclic( mem += len; } sg_req->last_sg = true; - dma_desc->txd.flags = DMA_CTRL_ACK; + dma_desc->txd.flags = 0; /* * Make sure that mode should not be conflicting with currently -- 1.7.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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