On 06/22/2012 05:42 AM, Laxman Dewangan wrote: > 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. > diff --git 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( > - dma_desc->txd.flags = DMA_CTRL_ACK; > + dma_desc->txd.flags = 0; I honestly have no idea about this one. If the dmaengine maintainers think it's semantically correct, I have no objections. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
