# \[PATCH v2 1/9\] dmaengine: dw-axi-dmac: use dmaenginem\_async\_device\_register to simplify the code

- From: Huang Shijie \<hidden\>
- Date: 2018-08-06 08:52:23 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2018/08/8771935
- Thread: https://ratatoskr.run/linux-arm-kernel/2018/08/8771933/t.md

```text
Use dmaenginem_async_device_register to simplify the code:
	remove dma_async_device_unregister.

Signed-off-by: Huang Shijie <redacted>
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index c4eb55e3011c..b2ac1d2c5b86 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -934,7 +934,7 @@ static int dw_probe(struct platform_device *pdev)
 
 	pm_runtime_put(chip->dev);
 
-	ret = dma_async_device_register(&dw->dma);
+	ret = dmaenginem_async_device_register(&dw->dma);
 	if (ret)
 		goto err_pm_disable;
 
@@ -977,8 +977,6 @@ static int dw_remove(struct platform_device *pdev)
 		tasklet_kill(&chan->vc.task);
 	}
 
-	dma_async_device_unregister(&dw->dma);
-
 	return 0;
 }
 
-- 
2.17.1
```