RE: [PATCH v4] PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.

[MyungJoo Ham]

>+		if (!strncmp(name, DEVFREQ_GOV_SIMPLE_ONDEMAND,
>+			     DEVFREQ_NAME_LEN))
>+			err = request_module("governor_%s", "simpleondemand");
>+		else
>+			err = request_module("governor_%s", name);
>+		if (err)
>+			return NULL;

You are returning without the lock acquired..