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PM / devfreq: Check NULL governor in available_governors_show 

The governor is initialized after sysfs attributes become visible so in
theory the governor field can be NULL here.

Fixes: bcf23c79c4 ("PM / devfreq: Fix available_governor sysfs")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Leonard Crestez 2019-09-24 10:26:53 +03:00 committed by Chanwoo Choi
parent 36eba5deff
commit d68adc8f85
1 changed files with 1 additions and 1 deletions
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2
drivers/devfreq/devfreq.c
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@ -1195,7 +1195,7 @@ static ssize_t available_governors_show(struct device *d,
* The devfreq with immutable governor (e.g., passive) shows * The devfreq with immutable governor (e.g., passive) shows
* only own governor. * only own governor.
*/ */
if (df->governor->immutable) { if (df->governor && df->governor->immutable) {
count = scnprintf(&buf[count], DEVFREQ_NAME_LEN, count = scnprintf(&buf[count], DEVFREQ_NAME_LEN,
"%s ", df->governor_name); "%s ", df->governor_name);
/* /*