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

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Message-Id: <20161104165536.20088-2-code@mmayer.net>
Date:   Fri,  4 Nov 2016 09:55:35 -0700
From:   Markus Mayer <code@...yer.net>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>
Cc:     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: [PATCH v2 1/2] cpufreq: add new attribute type cpufreq_freq_attr_wr_perm()

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)	\
+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