linux-kernel - [PATCH] cpufreq: qcom-cpufreq-hw: Use dev_err

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Date:   Fri, 23 Jun 2023 10:57:07 -0500
From:   Andrew Halaney <ahalaney@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-pm@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        viresh.kumar@...aro.org, rafael@...nel.org,
        konrad.dybcio@...aro.org, andersson@...nel.org, agross@...nel.org,
        Andrew Halaney <ahalaney@...hat.com>
Subject: [PATCH] cpufreq: qcom-cpufreq-hw: Use dev_err_probe() when failing to get icc paths

This way, if there's an issue (in this case a -EPROBE_DEFER), you can
get useful output:

    [root@...p19-243-150 ~]# cat /sys/kernel/debug/devices_deferred
    18591000.cpufreq        qcom-cpufreq-hw: Failed to find icc paths

Signed-off-by: Andrew Halaney <ahalaney@...hat.com>
---
 drivers/cpufreq/qcom-cpufreq-hw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index a78d7a27b4b5..f2830371d25f 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -661,7 +661,7 @@ static int qcom_cpufreq_hw_driver_probe(struct platform_device *pdev)
 
 	ret = dev_pm_opp_of_find_icc_paths(cpu_dev, NULL);
 	if (ret)
-		return ret;
+		return dev_err_probe(dev, ret, "Failed to find icc paths\n");
 
 	for (num_domains = 0; num_domains < MAX_FREQ_DOMAINS; num_domains++)
 		if (!platform_get_resource(pdev, IORESOURCE_MEM, num_domains))
-- 
2.40.1