From: Laxman Dewangan Date: Fri, 22 Jun 2012 11:42:44 +0000 (+0530) Subject: dma: tegra: do not set transfer desc flag to DMA_CTRL_ACK in cyclic mode X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6660f7af52caf6028b36e6a68a21c461f2fb0440;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Acked-by: Stephen Warren Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 78af256cca9e..ba4d73c525e6 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