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PM / devfreq: Check NULL governor in available_governors_show
commitd68adc8f85
upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1086,7 +1086,7 @@ static ssize_t available_governors_show(struct device *d,
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* The devfreq with immutable governor (e.g., passive) shows
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* only own governor.
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*/
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if (df->governor->immutable) {
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if (df->governor && df->governor->immutable) {
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count = scnprintf(&buf[count], DEVFREQ_NAME_LEN,
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"%s ", df->governor_name);
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/*
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