Re: [TEGRA194_CPUFREQ PATCH v4 3/4] cpufreq: Add Tegra194 cpufreq driver

Sumit Gupta
2020-07-13T14:30:20Z

>
> On 26-06-20, 21:13, Sumit Gupta wrote:
>> +static int tegra194_cpufreq_probe(struct platform_device *pdev)
>> +{
>> + struct tegra194_cpufreq_data *data;
>> + struct tegra_bpmp *bpmp;
>> + int err, i;
>> +
>> + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
>> + if (!data)
>> + return -ENOMEM;
>> +
>> + data->num_clusters = MAX_CLUSTERS;
>> + data->tables = devm_kcalloc(&pdev->dev, data->num_clusters,
>> + sizeof(*data->tables), GFP_KERNEL);
>> + if (!data->tables)
>> + return -ENOMEM;
>> +
>> + platform_set_drvdata(pdev, data);
>> +
>> + bpmp = tegra_bpmp_get(&pdev->dev);
>> + if (IS_ERR(bpmp))
>> + return PTR_ERR(bpmp);
>> +
>> + read_counters_wq = alloc_workqueue("read_counters_wq", __WQ_LEGACY, 1);
>> + if (!read_counters_wq) {
>> + dev_err(&pdev->dev, "fail to create_workqueue\n");
>> + err = -EINVAL;
>> + goto put_bpmp;
>
> This will call destroy_workqueue() eventually and it will crash your
> kernel.
>
> Apart from this, this stuff looks okay. Don't resend the patch just
> yet (and if required, send only this patch using --in-reply-to flag
> for git send email). Lets wait for an Ack from Rob for the first two
> patches.
>
Sorry for the delayed response as i was on PTO.
Thank you for the feedback.

Have posted a v5 based on v4 patch set.

>> + }
>> +
>
> --
> viresh
>