pm_find -- find a device
struct pm_dev * pm_find
(pm_dev_t type, struct pm_dev * from);
type of device
where to start looking
Scan the power management list for devices of a specific type. The
return value for a matching device may be passed to further calls
to this function to find further matches. A NULL indicates the end
of the list.
To search from the beginning pass NULL as the from value.