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PM / devfreq: Fix available_governors_show() when no governor is set

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Since devfreq_remove_governor() may clear the device's current governor
in certain situations, while governors actually exist independently of
the device, directly returning EINVAL in this case is inaccurate.

To fix this issue, remove this check and use df->governor for validity
verification in the following code.

Fixes: 483d557ee9 ("PM / devfreq: Clean up the devfreq instance name in sysfs attr")
Signed-off-by: Yaxiong Tian <tianyaxiong@kylinos.cn>
Reviewed-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20260401033055.67608-1-tianyaxiong@kylinos.cn/
This commit is contained in:
Yaxiong Tian
2026-04-30 06:47:06 +09:00
committed by Chanwoo Choi
parent a042a47a0e
commit b9199c0e7d
1 changed files with 1 additions and 4 deletions
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drivers/devfreq/devfreq.c
+1 -4
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@@ -1468,16 +1468,13 @@ static ssize_t available_governors_show(struct device *d,
struct devfreq *df = to_devfreq(d);
ssize_t count = 0;
if (!df->governor)
return -EINVAL;
mutex_lock(&devfreq_list_lock);
/*
* The devfreq with immutable governor (e.g., passive) shows
* only own governor.
*/
if (IS_SUPPORTED_FLAG(df->governor->flags, IMMUTABLE)) {
if (df->governor && IS_SUPPORTED_FLAG(df->governor->flags, IMMUTABLE)) {
count = scnprintf(&buf[count], DEVFREQ_NAME_LEN,
"%s ", df->governor->name);
/*