Re: autosuspend for storage devices

Alan Stern <[email protected]>
Newsgroups gmane.linux.usb.devel
Message-ID <[email protected]>
On Fri, 9 Feb 2007, Oliver Neukum wrote:

> > Also, it's debatable whether USB should autosuspend a storage device at
> > all.  Like with HID devices, it seems more logical to have autosuspend
> > requests come up from the lower layer (in this case the SCSI layer).  
> > After all, suspending a disk could cause it to spin down, which is
> > something the SCSI disk driver might want to be aware of.  You could raise
> > this question on the linux-scsi mailing list.
> 
> I will. But which devices don't have an upper layer.

I don't think usb-storage has any way of knowing.

>  And strictly
> speaking I am not suspending devices. I am managing vetos.

Call it what you will; the effect is the same.

Alan Stern


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