[xhci-hcd][linux 4.20.13] autosuspend on causes a single cpu core to stay in kernel mode using 100% of said cpu core.

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To: linux-usb@xxxxxxxxxxxxxxx
Subject: [xhci-hcd][linux 4.20.13] autosuspend on causes a single cpu core to stay in kernel mode using 100% of said cpu core.
From: Farelka kek <farelkakek@xxxxxxxxx>
Date: Sun, 3 Mar 2019 15:15:27 +0100

usbcore.autosuspend higher than -1, causes 1 cpu core to never step
down from kernel mode.

It happens on a core i5-7200U laptop, an acer f5-573g-50ec
Disabling usb autosuspend causes the cpu not to idle at, minimum of
25% cpu usage.

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