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Commit 73613b16 authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Rafael J. Wysocki
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PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL 



This patch fixes the bug of devfreq_add_device(). The devfreq device must
have the default governor. If find_devfreq_governor() returns error,
devfreq_add_device() fail to add the devfreq instance.

Fixes: 1b5c1be2 (PM / devfreq: map devfreq drivers to governor using name)
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 9932ef3c

drivers/devfreq/devfreq.c

+10 −5
Original line number Diff line number Diff line
@@ -593,11 +593,16 @@ struct devfreq *devfreq_add_device(struct device *dev, 
	list_add(&devfreq->node, &devfreq_list);



	governor = find_devfreq_governor(devfreq->governor_name);

	if (!IS_ERR(governor))

	if (IS_ERR(governor)) {

		dev_err(dev, "%s: Unable to find governor for the device\n",

			__func__);

		err = PTR_ERR(governor);

		goto err_init;

	}



	devfreq->governor = governor;

	if (devfreq->governor)

		err = devfreq->governor->event_handler(devfreq,

					DEVFREQ_GOV_START, NULL);

	err = devfreq->governor->event_handler(devfreq, DEVFREQ_GOV_START,

						NULL);

	if (err) {

		dev_err(dev, "%s: Unable to start governor for the device\n",

			__func__);