linux-kernel - [PATCH 03/21] exynos5440-cpufreq: use devm_irq_of_parse_and

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Message-Id: <1401880402-30091-4-git-send-email-nyushchenko@dev.rtsoft.ru>
Date:	Wed,  4 Jun 2014 15:13:03 +0400
From:	nyushchenko@....rtsoft.ru
To:	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	devicetree@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, lugovskoy@....rtsoft.ru,
	Nikita Yushchenko <nyushchenko@....rtsoft.ru>
Subject: [PATCH 03/21] exynos5440-cpufreq: use devm_irq_of_parse_and_map()

From: Nikita Yushchenko <nyushchenko@....rtsoft.ru>

This avoids leak of IRQ mapping on error paths, and makes it possible
to use devm_request_irq() without facing unmap-while-handler-installed
issues.

Signed-off-by: Nikita Yushchenko <nyushchenko@....rtsoft.ru>
---
 drivers/cpufreq/exynos5440-cpufreq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c
index a6b8214..a0b7121 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -353,8 +353,8 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
 		goto err_put_node;
 	}
 
-	dvfs_info->irq = irq_of_parse_and_map(np, 0);
-	if (!dvfs_info->irq) {
+	dvfs_info->irq = devm_irq_of_parse_and_map(dvfs_info->dev, np, 0);
+	if (dvfs_info->irq <= 0) {
 		dev_err(dvfs_info->dev, "No cpufreq irq found\n");
 		ret = -ENODEV;
 		goto err_put_node;
-- 
1.7.10.4

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