linux-kernel - [PATCH v2 2/2] cpufreq: ti-cpufreq: Use devres managed API in probe()

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Date:   Mon, 2 Apr 2018 11:49:58 -0500
From:   Suman Anna <s-anna@...com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Dave Gerlach <d-gerlach@...com>, Tero Kristo <t-kristo@...com>,
        <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Suman Anna <s-anna@...com>, Zumeng Chen <zumeng.chen@...il.com>
Subject: [PATCH v2 2/2] cpufreq: ti-cpufreq: Use devres managed API in probe()

The ti_cpufreq_probe() function uses regular kzalloc to allocate
the ti_cpufreq_data structure and kfree for freeing this memory
on failures. Simplify this code by using the devres managed
API.

Cc: Zumeng Chen <zumeng.chen@...il.com>
Signed-off-by: Suman Anna <s-anna@...com>
---
 drivers/cpufreq/ti-cpufreq.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 46d1ab2dea87..7d353a21935b 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -217,7 +217,7 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
 	if (!match)
 		return -ENODEV;
 
-	opp_data = kzalloc(sizeof(*opp_data), GFP_KERNEL);
+	opp_data = devm_kzalloc(&pdev->dev, sizeof(*opp_data), GFP_KERNEL);
 	if (!opp_data)
 		return -ENOMEM;
 
@@ -226,8 +226,7 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
 	opp_data->cpu_dev = get_cpu_device(0);
 	if (!opp_data->cpu_dev) {
 		pr_err("%s: Failed to get device for CPU0\n", __func__);
-		ret = -ENODEV;
-		goto free_opp_data;
+		return -ENODEV;
 	}
 
 	opp_data->opp_node = dev_pm_opp_of_get_opp_desc_node(opp_data->cpu_dev);
@@ -285,8 +284,6 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
 
 fail_put_node:
 	of_node_put(opp_data->opp_node);
-free_opp_data:
-	kfree(opp_data);
 
 	return ret;
 }
-- 
2.16.2