linux-kernel - Re: [PATCH 01/11] coresight-etm4x: Adding CoreSight ETM4x driver

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Message-ID: <CANLsYkxWaxWL6rDaEKh+EOcXVBEqWp1W5yarSEsvEC3B0mne7g@mail.gmail.com>
Date:	Mon, 27 Apr 2015 09:51:21 -0600
From:	Mathieu Poirier <mathieu.poirier@...aro.org>
To:	"Ivan T. Ivanov" <iivanov@...sol.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, linux-api@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kaixu Xia <kaixu.xia@...aro.org>,
	Chunyan Zhang <zhang.chunyan@...aro.org>
Subject: Re: [PATCH 01/11] coresight-etm4x: Adding CoreSight ETM4x driver

On 24 April 2015 at 09:05, Ivan T. Ivanov <iivanov@...sol.com> wrote:
>
> On Wed, 2015-04-22 at 16:40 -0600, Mathieu Poirier wrote:
>> From: Pratik Patel <pratikp@...eaurora.org>
>>
>> This driver manages the CoreSight ETMv4 (Embedded Trace Macrocell) IP block
>> to support HW assisted tracing on ARMv7 and ARMv8 architectures.
>>
>> Signed-off-by: Pratik Patel <pratikp@...eaurora.org>
>> Signed-off-by: Kaixu Xia <xiakaixu@...wei.com>
>> Signed-off-by: Mathieu Poirier poirier@...aro.org>
>
> <snip>
>
>>
>
>> +       pm_runtime_put(&adev->dev);
>> +
>> +       desc->type = CORESIGHT_DEV_TYPE_SOURCE;
>> +       desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
>> +       desc->ops = &etm4_cs_ops;
>> +       desc->pdata = pdata;
>> +       desc->dev = dev;
>> +       desc->groups = coresight_etmv4_groups;
>> +       drvdata->csdev = coresight_register(desc);
>> +       if (IS_ERR(drvdata->csdev)) {
>> +               ret = PTR_ERR(drvdata->csdev);
>> +               goto err_arch_supported;
>
> double runtime put.

Good catch - thanks.

>
>> +       }
>> +
>> +       dev_info(dev, "%s initialized\n", (char *)id->data);
>> +
>> +       if (boot_enable) {
>> +               coresight_enable(drvdata->csdev);
>> +               drvdata->boot_enable = true;
>> +       }
>> +
>> +       return 0;
>> +
>> +err_arch_supported:
>> +       pm_runtime_put(&adev->dev);
>> +       if (--etm4_count == 0)
>> +               unregister_hotcpu_notifier(&etm4_cpu_notifier);
>> +       return ret;
>> +}
>
> Regards,
> Ivan
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