linux-kernel - Re: [PATCH v2 1/2] cpufreq: add new attribute type cpufreq_freq_attr_wr

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Message-ID: <20161107043348.GA21030@vireshk-i7>
Date:   Mon, 7 Nov 2016 10:03:48 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Markus Mayer <code@...yer.net>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Power Management List <linux-pm@...r.kernel.org>,
        Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Markus Mayer <mmayer@...adcom.com>
Subject: Re: [PATCH v2 1/2] cpufreq: add new attribute type
 cpufreq_freq_attr_wr_perm()

On 04-11-16, 09:55, Markus Mayer wrote:
> From: Markus Mayer <mmayer@...adcom.com>
> 
> With the new attribute type, it is possible to create write-only
> CPUfreq attributes.
> 
> Signed-off-by: Markus Mayer <mmayer@...adcom.com>
> ---
>  include/linux/cpufreq.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
> index 5fa55fc..ed09930 100644
> --- a/include/linux/cpufreq.h
> +++ b/include/linux/cpufreq.h
> @@ -234,6 +234,10 @@ __ATTR(_name, _perm, show_##_name, NULL)
>  static struct freq_attr _name =			\
>  __ATTR(_name, 0644, show_##_name, store_##_name)
>  
> +#define cpufreq_freq_attr_wr_perm(_name, _perm)	\

shouldn't this be _wo_perm ?

Also, I wouldn't mind doing this in the second patch itself.

> +static struct freq_attr _name =			\
> +__ATTR(_name, _perm, NULL, store_##_name)
> +
>  struct global_attr {
>  	struct attribute attr;
>  	ssize_t (*show)(struct kobject *kobj,
> -- 
> 2.7.4

-- 
viresh