linux-kernel - [PATCH RESEND] dma: sh: remove unnecessary platform_set

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Message-id: <001e01cea1f3$b0d5a780$1280f680$%han@samsung.com>
Date:	Mon, 26 Aug 2013 09:32:05 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Vinod Koul' <vinod.koul@...el.com>
Cc:	'Dan Williams' <djbw@...com>, linux-kernel@...r.kernel.org,
	'Simon Horman' <horms@...ge.net.au>,
	'Andy Shevchenko' <andriy.shevchenko@...ux.jf.intel.com>,
	'Fabio Estevam' <fabio.estevam@...escale.com>,
	'Shawn Guo' <shawn.guo@...aro.org>,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH RESEND] dma: sh: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
Acked-by: Simon Horman <horms+renesas@...ge.net.au>
---
 drivers/dma/sh/shdmac.c |    3 ---
 drivers/dma/sh/sudmac.c |    2 --
 2 files changed, 5 deletions(-)

diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index c7faded..282e93f 100755
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -882,7 +882,6 @@ rst_err:
 	pm_runtime_put(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
-	platform_set_drvdata(pdev, NULL);
 	shdma_cleanup(&shdev->shdma_dev);
 eshdma:
 	synchronize_rcu();
@@ -911,8 +910,6 @@ static int sh_dmae_remove(struct platform_device *pdev)
 	sh_dmae_chan_remove(shdev);
 	shdma_cleanup(&shdev->shdma_dev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	synchronize_rcu();
 
 	return 0;
diff --git a/drivers/dma/sh/sudmac.c b/drivers/dma/sh/sudmac.c
index 3c7d2b8..bf85b8e 100755
--- a/drivers/dma/sh/sudmac.c
+++ b/drivers/dma/sh/sudmac.c
@@ -391,7 +391,6 @@ static int sudmac_probe(struct platform_device *pdev)
 chan_probe_err:
 	sudmac_chan_remove(su_dev);
 
-	platform_set_drvdata(pdev, NULL);
 	shdma_cleanup(&su_dev->shdma_dev);
 
 	return err;
@@ -405,7 +404,6 @@ static int sudmac_remove(struct platform_device *pdev)
 	dma_async_device_unregister(dma_dev);
 	sudmac_chan_remove(su_dev);
 	shdma_cleanup(&su_dev->shdma_dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
-- 
1.7.10.4


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