From bb835d73321a2efbd68b79ffc99d3d6ee906f2ed Mon Sep 17 00:00:00 2001 From: Robin Gong Date: Wed, 23 Oct 2019 00:33:42 +0800 Subject: [PATCH] MLK-22798-1: dmaengine: fsl-edma-v3: do not enable interrupt in dev_2_dev Do not enable interrupt in dev_2_dev with cyclic case, since in such case no any interrupt needed. Otherwise many interrupt will come in every 64 words transfered in ASRC case, which cause heavy system loading. Signed-off-by: Robin Gong Reviewed-by: Shengjiu Wang (cherry picked from commit f0a3172e1ceb04c46377160486ad7dc6ee022850) --- drivers/dma/fsl-edma-v3.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dma/fsl-edma-v3.c b/drivers/dma/fsl-edma-v3.c index 0e0061e44a5f..36371130528f 100644 --- a/drivers/dma/fsl-edma-v3.c +++ b/drivers/dma/fsl-edma-v3.c @@ -567,6 +567,7 @@ static struct dma_async_tx_descriptor *fsl_edma3_prep_dma_cyclic( int sg_len, i; u32 src_addr, dst_addr, last_sg, nbytes; u16 soff, doff, iter; + bool major_int = true; sg_len = buf_len / period_len; fsl_desc = fsl_edma3_alloc_desc(fsl_chan, sg_len); @@ -607,11 +608,12 @@ static struct dma_async_tx_descriptor *fsl_edma3_prep_dma_cyclic( dst_addr = fsl_chan->fsc.dev_addr; soff = 0; doff = 0; + major_int = false; } fsl_edma3_fill_tcd(fsl_chan, fsl_desc->tcd[i].vtcd, src_addr, dst_addr, fsl_chan->fsc.attr, soff, nbytes, 0, - iter, iter, doff, last_sg, true, false, true); + iter, iter, doff, last_sg, major_int, false, true); dma_buf_next += period_len; } -- 2.17.1