linux-kernel - [PATCH 14/46] dmaengine: coh901318: use dmaenginem_async_device

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Message-Id: <20180803072016.21544-15-sjhuang@iluvatar.ai>
Date:   Fri,  3 Aug 2018 15:19:44 +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 14/46] dmaengine: coh901318: 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_register_of_dma,err_register_memcpy

Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
---
 drivers/dma/coh901318.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index da74fd74636b..ff29f2f6ce3b 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -2690,7 +2690,7 @@ static int __init coh901318_probe(struct platform_device *pdev)
 	base->dma_slave.device_terminate_all = coh901318_terminate_all;
 	base->dma_slave.dev = &pdev->dev;
 
-	err = dma_async_device_register(&base->dma_slave);
+	err = dmaenginem_async_device_register(&base->dma_slave);
 
 	if (err)
 		goto err_register_slave;
@@ -2717,15 +2717,15 @@ static int __init coh901318_probe(struct platform_device *pdev)
 	 * i.e. 2^2
 	 */
 	base->dma_memcpy.copy_align = DMAENGINE_ALIGN_4_BYTES;
-	err = dma_async_device_register(&base->dma_memcpy);
+	err = dmaenginem_async_device_register(&base->dma_memcpy);
 
 	if (err)
-		goto err_register_memcpy;
+		goto err_register_slave;
 
 	err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
 					 base);
 	if (err)
-		goto err_register_of_dma;
+		goto err_register_slave;
 
 	platform_set_drvdata(pdev, base);
 	dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%p\n",
@@ -2733,10 +2733,6 @@ static int __init coh901318_probe(struct platform_device *pdev)
 
 	return err;
 
- err_register_of_dma:
-	dma_async_device_unregister(&base->dma_memcpy);
- err_register_memcpy:
-	dma_async_device_unregister(&base->dma_slave);
  err_register_slave:
 	coh901318_pool_destroy(&base->pool);
 	return err;
@@ -2767,8 +2763,6 @@ static int coh901318_remove(struct platform_device *pdev)
 	coh901318_base_remove(base, dma_memcpy_channels);
 
 	of_dma_controller_free(pdev->dev.of_node);
-	dma_async_device_unregister(&base->dma_memcpy);
-	dma_async_device_unregister(&base->dma_slave);
 	coh901318_pool_destroy(&base->pool);
 	return 0;
 }
-- 
2.17.1