From 35e34480c5177f96d822b8ea8e9e42b5fcca6ff6 Mon Sep 17 00:00:00 2001 From: Hanna Hawa Date: Fri, 5 May 2017 11:57:52 +0200 Subject: [PATCH] dmaengine: mv_xor_v2: remove unnecessary write to DESQ_STOP register Remove unnecessary write to DESQ_STOP register, this register is used to enable or disable the XOR engine, and not to issue all pending descriptors in the queue. mv_xor_v2 driver already writes to this register and enable XOR engine in the mv_xor_v2_descq_init() function, called during initialization. Signed-off-by: Hanna Hawa Signed-off-by: Thomas Petazzoni Signed-off-by: Vinod Koul --- drivers/dma/mv_xor_v2.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c index 5292ff2d5380..f386b88bb50c 100644 --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -535,9 +535,6 @@ static void mv_xor_v2_issue_pending(struct dma_chan *chan) mv_xor_v2_add_desc_to_desq(xor_dev, xor_dev->npendings); xor_dev->npendings = 0; - /* Activate the channel */ - writel(0, xor_dev->dma_base + MV_XOR_V2_DMA_DESQ_STOP_OFF); - spin_unlock_bh(&xor_dev->lock); } -- 2.20.1