linux-kernel - [PATCH 3/5] hwrng: pixocell

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Date:	Thu, 27 Feb 2014 14:04:28 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Herbert Xu' <herbert@...dor.apana.org.au>
Cc:	linux-kernel@...r.kernel.org, 'Jamie Iles' <jamie@...ieiles.com>,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH 3/5] hwrng: pixocell - Use devm_clk_get()

Use devm_clk_get() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/char/hw_random/picoxcell-rng.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/char/hw_random/picoxcell-rng.c b/drivers/char/hw_random/picoxcell-rng.c
index c03beee..eab5448 100644
--- a/drivers/char/hw_random/picoxcell-rng.c
+++ b/drivers/char/hw_random/picoxcell-rng.c
@@ -108,7 +108,7 @@ static int picoxcell_trng_probe(struct platform_device *pdev)
 	if (IS_ERR(rng_base))
 		return PTR_ERR(rng_base);
 
-	rng_clk = clk_get(&pdev->dev, NULL);
+	rng_clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(rng_clk)) {
 		dev_warn(&pdev->dev, "no clk\n");
 		return PTR_ERR(rng_clk);
@@ -117,7 +117,7 @@ static int picoxcell_trng_probe(struct platform_device *pdev)
 	ret = clk_enable(rng_clk);
 	if (ret) {
 		dev_warn(&pdev->dev, "unable to enable clk\n");
-		goto err_enable;
+		return ret;
 	}
 
 	picoxcell_trng_start();
@@ -132,9 +132,6 @@ static int picoxcell_trng_probe(struct platform_device *pdev)
 
 err_register:
 	clk_disable(rng_clk);
-err_enable:
-	clk_put(rng_clk);
-
 	return ret;
 }
 
@@ -142,7 +139,6 @@ static int picoxcell_trng_remove(struct platform_device *pdev)
 {
 	hwrng_unregister(&picoxcell_trng);
 	clk_disable(rng_clk);
-	clk_put(rng_clk);
 
 	return 0;
 }
-- 
1.7.10.4


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