linux-kernel - [PATCH] pwm: Convert pwm-tegra to use devm_clk

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Date:	Sun, 01 Jul 2012 13:00:51 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	Thierry Reding <thierry.reding@...onic-design.de>
Cc:	linux-kernel@...r.kernel.org, Stephen Warren <swarren@...dia.com>
Subject: [PATCH] pwm: Convert pwm-tegra to use devm_clk_get()

Also return proper error in tegra_pwm_remove() if pwmchip_remove() fails.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/pwm/pwm-tegra.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index 472b74e..02ce18d 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -194,7 +194,7 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pwm);
 
-	pwm->clk = clk_get(&pdev->dev, NULL);
+	pwm->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(pwm->clk))
 		return PTR_ERR(pwm->clk);
 
@@ -206,7 +206,6 @@ static int tegra_pwm_probe(struct platform_device *pdev)
 	ret = pwmchip_add(&pwm->chip);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
-		clk_put(pwm->clk);
 		return ret;
 	}
 
@@ -233,10 +232,7 @@ static int __devexit tegra_pwm_remove(struct platform_device *pdev)
 		clk_disable_unprepare(pc->clk);
 	}
 
-	pwmchip_remove(&pc->chip);
-	clk_put(pc->clk);
-
-	return 0;
+	return pwmchip_remove(&pc->chip);
 }
 
 #ifdef CONFIG_OF
-- 
1.7.9.5



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