linux-kernel - [PATCH 42/46] dmaengine: at_xdmac: use dmaenginem_async_device

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Message-Id: <20180803072016.21544-43-sjhuang@iluvatar.ai>
Date:   Fri,  3 Aug 2018 15:20:12 +0800
From:   Huang Shijie <sjhuang@...vatar.ai>
To:     vkoul@...nel.org
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        dave.jiang@...el.com, radhey.shyam.pandey@...inx.com,
        appana.durga.rao@...inx.com, jmkrzyszt@...il.com,
        gomonovych@...il.com, peter.ujfalusi@...com, keescook@...omium.org,
        horms+renesas@...ge.net.au, geert+renesas@...der.be,
        shawnguo@...nel.org, baoyou.xie@...aro.org,
        michal.simek@...inx.com, baohua@...nel.org,
        ludovic.desroches@...rochip.com, linus.walleij@...aro.org,
        david.brown@...aro.org, Huang Shijie <sjhuang@...vatar.ai>
Subject: [PATCH 42/46] dmaengine: at_xdmac: use dmaenginem_async_device_register to simplify the code

Use dmaenginem_async_device_register to simplify the code:
	remove dma_async_device_unregister.
	remove label err_dma_unregister

Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
---
 drivers/dma/at_xdmac.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 4bf72561667c..c220f667be80 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -2041,7 +2041,7 @@ static int at_xdmac_probe(struct platform_device *pdev)
 	}
 	platform_set_drvdata(pdev, atxdmac);
 
-	ret = dma_async_device_register(&atxdmac->dma);
+	ret = dmaenginem_async_device_register(&atxdmac->dma);
 	if (ret) {
 		dev_err(&pdev->dev, "fail to register DMA engine device\n");
 		goto err_clk_disable;
@@ -2051,7 +2051,7 @@ static int at_xdmac_probe(struct platform_device *pdev)
 					 at_xdmac_xlate, atxdmac);
 	if (ret) {
 		dev_err(&pdev->dev, "could not register of dma controller\n");
-		goto err_dma_unregister;
+		goto err_clk_disable;
 	}
 
 	dev_info(&pdev->dev, "%d channels, mapped at 0x%p\n",
@@ -2059,8 +2059,6 @@ static int at_xdmac_probe(struct platform_device *pdev)
 
 	return 0;
 
-err_dma_unregister:
-	dma_async_device_unregister(&atxdmac->dma);
 err_clk_disable:
 	clk_disable_unprepare(atxdmac->clk);
 err_free_irq:
@@ -2075,7 +2073,6 @@ static int at_xdmac_remove(struct platform_device *pdev)
 
 	at_xdmac_off(atxdmac);
 	of_dma_controller_free(pdev->dev.of_node);
-	dma_async_device_unregister(&atxdmac->dma);
 	clk_disable_unprepare(atxdmac->clk);
 
 	free_irq(atxdmac->irq, atxdmac);
-- 
2.17.1