linux-kernel - [PATCH 1/2] dma: at_hdmac: remove unnecessary platform_set

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Date:	Mon, 06 May 2013 12:53:33 +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,
	Jingoo Han <jg1.han@...sung.com>,
	'Nicolas Ferre' <nicolas.ferre@...el.com>
Subject: [PATCH 1/2] dma: at_hdmac: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/dma/at_hdmac.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index e923cda..c093ab7 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1472,7 +1472,6 @@ err_of_dma_controller_register:
 	dma_async_device_unregister(&atdma->dma_common);
 	dma_pool_destroy(atdma->dma_desc_pool);
 err_pool_create:
-	platform_set_drvdata(pdev, NULL);
 	free_irq(platform_get_irq(pdev, 0), atdma);
 err_irq:
 	clk_disable(atdma->clk);
@@ -1497,7 +1496,6 @@ static int at_dma_remove(struct platform_device *pdev)
 	dma_async_device_unregister(&atdma->dma_common);
 
 	dma_pool_destroy(atdma->dma_desc_pool);
-	platform_set_drvdata(pdev, NULL);
 	free_irq(platform_get_irq(pdev, 0), atdma);
 
 	list_for_each_entry_safe(chan, _chan, &atdma->dma_common.channels,
-- 
1.7.2.5

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