linux-kernel - Re: [PATCH v6 3/8] interconnect: Add debugfs support

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Message-ID: <3a0d35bb-f55a-28c0-f2a6-0f2b49422896@linaro.org>
Date:   Fri, 20 Jul 2018 17:36:00 +0300
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     linux-pm@...r.kernel.org, rjw@...ysocki.net, robh+dt@...nel.org,
        mturquette@...libre.com, khilman@...libre.com,
        abailon@...libre.com, vincent.guittot@...aro.org,
        skannan@...eaurora.org, bjorn.andersson@...aro.org,
        amit.kucheria@...aro.org, seansw@....qualcomm.com,
        daidavid1@...eaurora.org, evgreen@...omium.org, mka@...omium.org,
        mark.rutland@....com, lorenzo.pieralisi@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v6 3/8] interconnect: Add debugfs support

Hi Greg,

On 15.07.18 г. 15:15, Greg KH wrote:
> On Mon, Jul 09, 2018 at 06:50:59PM +0300, Georgi Djakov wrote:
>> +static int __init icc_debugfs_init(void)
>> +{
>> +	struct dentry *file;
>> +
>> +	icc_debugfs_dir = debugfs_create_dir("interconnect", NULL);
>> +	if (!icc_debugfs_dir) {
>> +		pr_err("interconnect: error creating debugfs directory\n");
>> +		return -ENODEV;
>> +	}
> 
> You should never care about the return value of a debugfs call.  Just
> ignore it and move on.

Ok!

>> +	file = debugfs_create_file("interconnect_summary", 0444,
>> +				   icc_debugfs_dir, NULL, &icc_summary_fops);
>> +	if (!file)
>> +		return -ENODEV;
> 
> Again, do not check this.
> 
> Where do you remove this directory and file from the system when the
> code shuts down?

Will take care of this! Thanks for the feedback!

Georgi