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Date:   Sun, 15 Jul 2018 14:15:07 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Georgi Djakov <georgi.djakov@linaro.org>
Cc:     linux-pm@vger.kernel.org, rjw@rjwysocki.net, robh+dt@kernel.org,
        mturquette@baylibre.com, khilman@baylibre.com,
        abailon@baylibre.com, vincent.guittot@linaro.org,
        skannan@codeaurora.org, bjorn.andersson@linaro.org,
        amit.kucheria@linaro.org, seansw@qti.qualcomm.com,
        daidavid1@codeaurora.org, evgreen@chromium.org, mka@chromium.org,
        mark.rutland@arm.com, lorenzo.pieralisi@arm.com,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v6 3/8] interconnect: Add debugfs support
Message-ID: <20180715121507.GA17794@kroah.com>
References: <20180709155104.25528-1-georgi.djakov@linaro.org>
 <20180709155104.25528-4-georgi.djakov@linaro.org>
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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.

> +	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?

thanks,

greg k-h