From mboxrd@z Thu Jan  1 00:00:00 1970
From: ccross@android.com (Colin Cross)
Date: Thu, 27 Jan 2011 13:51:13 -0800
Subject: [PATCH v2 18/28] ARM: tegra: add CPU_IDLE driver
In-Reply-To: <4D41D7C2.3080608@codeaurora.org>
References: <1295834493-5019-1-git-send-email-ccross@android.com>
	<1295834493-5019-19-git-send-email-ccross@android.com>
	<4D41D7C2.3080608@codeaurora.org>
Message-ID: <AANLkTi=o5o2_4Ur2GTS=0XSoYqFMYqSF99aU9N_wxWuu@mail.gmail.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Thu, Jan 27, 2011 at 12:38 PM, Stephen Boyd <sboyd@codeaurora.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.