Re: [PATCH 0/8] Convert USB over to the runtime PM framework

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On Wed, 10 Feb 2010, Alan Cox wrote:

> > No, we should implement runtime power management for SCSI. And then
> > teach user space to only ask every 10 seconds or so for a new volume.
> 
> Semi-agreed. However the user space API probably ought to be "wait
> for volume change", simply so that hardware that can do it right does it
> right and for other stuff the kernel is more in control of poll rates -
> after all it knows the right rates for different hw including 'hardwired'

Are you suggesting that the kernel should include its own polling code 
to detect media changes on devices that don't report them?

Alan Stern

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