From 8592f02464d52776c5cfae4627c6413b0ae7602d Mon Sep 17 00:00:00 2001
From: Robin Gong <yibin.gong@nxp.com>
Date: Wed, 14 Jul 2021 18:20:43 +0800
Subject: [PATCH] Revert "dmaengine: imx-sdma: refine to load context only once"
Git-commit: 8592f02464d52776c5cfae4627c6413b0ae7602d
Patch-mainline: v5.15-rc1
References: git-fixes stable-5.14.6

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

Fixes: ad0d92d7ba6a ("dmaengine: imx-sdma: refine to load context only once")
Cc: <stable@vger.kernel.org>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Richard Leitner <richard.leitner@skidata.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/dma/imx-sdma.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 8070fd664bfc..e510df0e2018 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -433,7 +433,6 @@ 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;
 };
@@ -1008,9 +1007,6 @@ 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)
@@ -1053,8 +1049,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
 
 	spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
 
-	sdmac->context_loaded = true;
-
 	return ret;
 }
 
@@ -1093,7 +1087,6 @@ static void sdma_channel_terminate_work(struct work_struct *work)
 	vchan_get_all_descriptors(&sdmac->vc, &head);
 	spin_unlock_irqrestore(&sdmac->vc.lock, flags);
 	vchan_dma_desc_free_list(&sdmac->vc, &head);
-	sdmac->context_loaded = false;
 }
 
 static int sdma_terminate_all(struct dma_chan *chan)
@@ -1361,7 +1354,6 @@ static void sdma_free_chan_resources(struct dma_chan *chan)
 
 	sdmac->event_id0 = 0;
 	sdmac->event_id1 = 0;
-	sdmac->context_loaded = false;
 
 	sdma_set_channel_priority(sdmac, 0);
 
-- 
2.26.2