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From:   yibin.gong@nxp.com
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Subject: [PATCH v5 03/15] Revert "dmaengine: imx-sdma: refine to load context only once"
Date:   Mon, 10 Jun 2019 16:17:41 +0800
Message-Id: <20190610081753.11422-4-yibin.gong@nxp.com>
In-Reply-To: <20190610081753.11422-1-yibin.gong@nxp.com>
References: <20190610081753.11422-1-yibin.gong@nxp.com>
Sender: linux-kernel-owner@vger.kernel.org
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From: Robin Gong <yibin.gong@nxp.com>

This reverts commit ad0d92d7ba6aecbe2705907c38ff8d8be4da1e9c, because
in spi-imx case, burst length may be changed dynamically.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
---
 drivers/dma/imx-sdma.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index ca296f0..21db6b69 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -377,7 +377,6 @@ struct sdma_channel {
 	unsigned long			watermark_level;
 	u32				shp_addr, per_addr;
 	enum dma_status			status;
-	bool				context_loaded;
 	struct imx_dma_data		data;
 	struct work_struct		terminate_worker;
 };
@@ -988,9 +987,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
 	int ret;
 	unsigned long flags;
 
-	if (sdmac->context_loaded)
-		return 0;
-
 	if (sdmac->direction == DMA_DEV_TO_MEM)
 		load_address = sdmac->pc_from_device;
 	else if (sdmac->direction == DMA_DEV_TO_DEV)
@@ -1033,8 +1029,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
 
 	spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
 
-	sdmac->context_loaded = true;
-
 	return ret;
 }
 
@@ -1074,7 +1068,6 @@ static void sdma_channel_terminate_work(struct work_struct *work)
 	sdmac->desc = NULL;
 	spin_unlock_irqrestore(&sdmac->vc.lock, flags);
 	vchan_dma_desc_free_list(&sdmac->vc, &head);
-	sdmac->context_loaded = false;
 }
 
 static int sdma_disable_channel_async(struct dma_chan *chan)
-- 
2.7.4