linux-kernel - [PATCH v2] pinctrl/coh901: use clk_prepare

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Message-ID: <1340181732-21953-1-git-send-email-linus.walleij@stericsson.com>
Date:	Wed, 20 Jun 2012 10:42:12 +0200
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Cc:	Stephen Warren <swarren@...dia.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Pankaj Jangra <jangra.pankaj9@...il.com>
Subject: [PATCH v2] pinctrl/coh901: use clk_prepare_[en|dis]able()

From: Linus Walleij <linus.walleij@...aro.org>

The COH901 GPIO driver did not prepare or unprepare its
clock, so let us fix it to do so.

Cc: Pankaj Jangra <jangra.pankaj9@...il.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
ChangeLog v1->v2:
- Fix up to use clk_disable_unprepare() on error and exit paths,
  noticed by Pankaj Jangra.
---
 drivers/pinctrl/pinctrl-coh901.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index 55697a5..cc0f00d 100644
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -770,7 +770,7 @@ static int __init u300_gpio_probe(struct platform_device *pdev)
 		dev_err(gpio->dev, "could not get GPIO clock\n");
 		goto err_no_clk;
 	}
-	err = clk_enable(gpio->clk);
+	err = clk_prepare_enable(gpio->clk);
 	if (err) {
 		dev_err(gpio->dev, "could not enable GPIO clock\n");
 		goto err_no_clk_enable;
@@ -912,7 +912,7 @@ err_no_ioremap:
 	release_mem_region(gpio->memres->start, resource_size(gpio->memres));
 err_no_ioregion:
 err_no_resource:
-	clk_disable(gpio->clk);
+	clk_disable_unprepare(gpio->clk);
 err_no_clk_enable:
 	clk_put(gpio->clk);
 err_no_clk:
@@ -943,7 +943,7 @@ static int __exit u300_gpio_remove(struct platform_device *pdev)
 	iounmap(gpio->base);
 	release_mem_region(gpio->memres->start,
 			   resource_size(gpio->memres));
-	clk_disable(gpio->clk);
+	clk_disable_unprepare(gpio->clk);
 	clk_put(gpio->clk);
 	platform_set_drvdata(pdev, NULL);
 	kfree(gpio);
-- 
1.7.9.2

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