linux-stable/Documentation/ABI/testing/sysfs-bus-platform-onboard-...

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What: /sys/bus/platform/devices/<dev>/always_powered_in_suspend
Date: June 2022
KernelVersion: 5.20
Contact: Matthias Kaehlcke <matthias@kaehlcke.net>
linux-usb@vger.kernel.org
Description:
(RW) Controls whether the USB hub remains always powered
during system suspend or not. This attribute is not
available for non-hub devices.