linux-kernel - Re: [PATCH v2 18/28] ARM: tegra: add CPU

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Message-ID: <AANLkTi=o5o2_4Ur2GTS=0XSoYqFMYqSF99aU9N_wxWuu@mail.gmail.com>
Date:	Thu, 27 Jan 2011 13:51:13 -0800
From:	Colin Cross <ccross@...roid.com>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	linux-tegra@...r.kernel.org, Russell King <linux@....linux.org.uk>,
	konkers@...roid.com, Gary King <gking@...dia.com>,
	linux-kernel@...r.kernel.org, olof@...om.net,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 18/28] ARM: tegra: add CPU_IDLE driver

On Thu, Jan 27, 2011 at 12:38 PM, Stephen Boyd <sboyd@...eaurora.org> wrote:
> On 01/23/2011 06:01 PM, Colin Cross wrote:
>>
>> +static int __init tegra_cpuidle_debug_init(void)
>> +{
>> +     struct dentry *dir;
>> +     struct dentry *d;
>> +
>> +     dir = debugfs_create_dir("cpuidle", NULL);
>> +     if (!dir)
>> +             return -ENOMEM;
>> +
>> +     d = debugfs_create_file("lp2", S_IRUGO, dir, NULL,
>> +             &tegra_lp2_debug_ops);
>> +     if (!d)
>> +             return -ENOMEM;
>> +
>> +     return 0;
>> +}
>> +#endif
>> +
>> +late_initcall(tegra_cpuidle_debug_init);
>
> Will this compile with CONFIG_DEBUG_FS=n?

Yes.  All debugfs ops return ERR_PTR(-ENODEV) if CONFIG_DEBUG_FS=n, so
tegra_cpuidle_debug_init will do nothing and return 0.
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