`unsigned int runtime_auto;`
- if set, indicates that the user space has allowed the device driver to
power manage the device at run time via the /sys/devices/.../power/control
- `interface;` it may only be modified with the help of the pm_runtime_allow()
- and pm_runtime_forbid() helper functions
+ `interface;` it may only be modified with the help of the
+ pm_runtime_allow() and pm_runtime_forbid() helper functions
`unsigned int no_callbacks;`
- indicates that the device does not use the runtime PM callbacks (see