Re: [linux-usb-devel] [PATCH] USB: Only enable autosuspend by default on certain device classes

Jiri Kosina <[email protected]> Fri, 3 Aug 2007 17:31:52 +0200 (CEST)

Newsgroups	gmane.linux.kernel,gmane.linux.usb.devel
Message-ID	<[email protected]>

On Fri, 3 Aug 2007, Adam Kropelin wrote:

> Although I have no proof immediately at hand, I suspect at a minimum HID 
> power class devices should be blacklisted from autosuspend. Given the 
> spotty USB implementations on many such devices I'd be surprised if 
> suspend worked reliably. 

I agree here.

> Plus if you're connected to such a device for monitoring purposes you're 
> probably powered by it as well, so you have little to gain from suspend 
> even if it works.

I currently don't have any HID UPS by hand to verify, but I'd be surprised 
if they would advertise remote wakeup capability ... ?

Thanks,

-- 
Jiri Kosina