Re: [RFD] Automatic suspend

[Alan Stern]

On Wed, 18 Feb 2009, Oliver Neukum wrote:

> Am Wednesday 18 February 2009 16:10:48 schrieb Alan Stern:
> > On Wed, 18 Feb 2009, Oliver Neukum wrote:
> > 
> > > But the transport and the driver may be in different subsystems, e.g.
> > > usb storage.
> > 
> > We would have to add a part of usb-storage into the SCSI subsystem, by 
> > creating a USB transport class.  Perhaps this class could be shared 
> > with Firewire/IEEE1394.
> 
> That would be a specific solution. But the problem is generic. Take
> for example HID. Several drivers may share one transport, but the transport
> may be USB 2.0/3.0 or bluetooth.

In essence what you're saying is that we won't be able to do
link-suspend for HID until something like HID transport classes (or
something simpler, devoted specifically to runtime PM) is implemented.  
And likewise for other subsystems.  I can't argue with this conclusion.

Alan Stern

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