[PATCH v13 03/12] Revert "dmaengine: imx-sdma: refine to load context only once"

From: Robin Gong
Date: Mon Aug 31 2020 - 03:51:09 EST


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@xxxxxxxxxxxxxxx>
Signed-off-by: Robin Gong <yibin.gong@xxxxxxx>
Acked-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Tested-by: Richard Leitner <richard.leitner@xxxxxxxxxxx>
---
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 4f8d8f5..22be370 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -379,7 +379,6 @@ 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;
};
@@ -986,9 +985,6 @@ 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)
@@ -1031,8 +1027,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)

spin_unlock_irqrestore(&sdma->channel_0_lock, flags);

- sdmac->context_loaded = true;
-
return ret;
}

@@ -1071,7 +1065,6 @@ 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)
@@ -1339,7 +1332,6 @@ 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);

--
2.7.4