From mboxrd@z Thu Jan  1 00:00:00 1970
From: Feng Hong <hongfeng@marvell.com>
Subject: Why rpm_idle called in rpm_resume ?
Date: Mon, 13 May 2013 00:18:31 -0700
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Hi, All,

Recently, I'm reviewing the runtime implementation, there is one logical puzzle me a lot, can you help to explain ?

See below, if rpm_callback called with successful return in rpm_resume, rpm_idle will be called, what's the purpose on it ? The device just comeback to active, why call rpm_idle to try to suspend it ?  
static int rpm_resume(struct device *dev, int rpmflags)
{
    ...
    retval = rpm_callback(callback, dev);
    if (retval) {
        ...
    } else {
        __update_runtime_status(dev, RPM_ACTIVE)
        ...
    }
    if (!retval)
        rpm_idle(dev, RPM_ASYNC);
    ....
}