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authorChanwoo Choi <cw00.choi@samsung.com>2019-11-05 12:18:03 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2019-12-30 03:59:05 +0300
commit2fee1a7cc6b1ce6634bb0f025be2c94a58dfa34d (patch)
treed653bb2d72754dcae244a6a88463cfc25ff539d9 /drivers/devfreq
parent5af744ebae856a50e8b5e208a5acf28713a4ce98 (diff)
downloadlinux-2fee1a7cc6b1ce6634bb0f025be2c94a58dfa34d.tar.xz
PM / devfreq: Add new name attribute for sysfs
The commit 4585fbcb5331 ("PM / devfreq: Modify the device name as devfreq(X) for sysfs") changed the node name to devfreq(x). After this commit, it is not possible to get the device name through /sys/class/devfreq/devfreq(X)/*. Add new name attribute in order to get device name. Cc: stable@vger.kernel.org Fixes: 4585fbcb5331 ("PM / devfreq: Modify the device name as devfreq(X) for sysfs") Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/devfreq.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 57f6944d65a6..07602083c743 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -1259,6 +1259,14 @@ err_out:
}
EXPORT_SYMBOL(devfreq_remove_governor);
+static ssize_t name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct devfreq *devfreq = to_devfreq(dev);
+ return sprintf(buf, "%s\n", dev_name(devfreq->dev.parent));
+}
+static DEVICE_ATTR_RO(name);
+
static ssize_t governor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1592,6 +1600,7 @@ static ssize_t trans_stat_show(struct device *dev,
static DEVICE_ATTR_RO(trans_stat);
static struct attribute *devfreq_attrs[] = {
+ &dev_attr_name.attr,
&dev_attr_governor.attr,
&dev_attr_available_governors.attr,
&dev_attr_cur_freq.attr,