linux-kernel - [PATCH 1/2] cpufreq: s5pv210: Simplify with dev_err

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Date:   Wed, 26 Aug 2020 18:00:15 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] cpufreq: s5pv210: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/cpufreq/s5pv210-cpufreq.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c
index e84281e2561d..7dccdb364fcf 100644
--- a/drivers/cpufreq/s5pv210-cpufreq.c
+++ b/drivers/cpufreq/s5pv210-cpufreq.c
@@ -590,6 +590,7 @@ static struct notifier_block s5pv210_cpufreq_reboot_notifier = {
 
 static int s5pv210_cpufreq_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct device_node *np;
 	int id, result = 0;
 
@@ -602,21 +603,14 @@ static int s5pv210_cpufreq_probe(struct platform_device *pdev)
 	 * cpufreq-dt driver.
 	 */
 	arm_regulator = regulator_get(NULL, "vddarm");
-	if (IS_ERR(arm_regulator)) {
-		if (PTR_ERR(arm_regulator) == -EPROBE_DEFER)
-			pr_debug("vddarm regulator not ready, defer\n");
-		else
-			pr_err("failed to get regulator vddarm\n");
-		return PTR_ERR(arm_regulator);
-	}
+	if (IS_ERR(arm_regulator))
+		return dev_err_probe(dev, PTR_ERR(arm_regulator),
+				     "failed to get regulator vddarm\n");
 
 	int_regulator = regulator_get(NULL, "vddint");
 	if (IS_ERR(int_regulator)) {
-		if (PTR_ERR(int_regulator) == -EPROBE_DEFER)
-			pr_debug("vddint regulator not ready, defer\n");
-		else
-			pr_err("failed to get regulator vddint\n");
-		result = PTR_ERR(int_regulator);
+		result = dev_err_probe(dev, PTR_ERR(int_regulator),
+				       "failed to get regulator vddint\n");
 		goto err_int_regulator;
 	}
 
-- 
2.17.1