# Re: \[RFC\]\[USB\] powerpc: Workaround for the PPC440EPX USBH\_23 errata

- From: Alan Stern \<stern@rowland.harvard.edu\>
- Date: 2008-08-29 15:26:18 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2008/08/9444843
- Thread: https://ratatoskr.run/linuxppc-dev/2008/08/9444782/t.md

```text
On Fri, 29 Aug 2008, Benjamin Herrenschmidt wrote:

> I suppose some embedded platforms don't use CONFIG_PM, is this still a
> requirement for autosuspend ? Or do that happen always on an empty port
> nowadays ?

ohci-hcd doesn't automatically suspend the root hub if CONFIG_PM isn't
set.  However it isn't necessary to set CONFIG_SLEEP,
CONFIG_HIBERNATION, or CONFIG_USB_SUSPEND.

Alan Stern
```