Re: [PATCH V3] input: Fix USB autosuspend on bcm5974

On Wed, 12 Oct 2011, Matthew Garrett wrote:

On Wed, Oct 12, 2011 at 06:56:32PM +0200, Oliver Neukum wrote:

quoted

Am Mittwoch, 12. Oktober 2011, 18:16:51 schrieb Matthew Garrett:

quoted

Yeah. Plausibly the model we have in hid is wrong at the moment - rather 
than set flags that block suspend, it might make more sense to take 
references. It'd complicate things a little, in that we'd have to take 
more care in terms of keeping track of the state.

I am afraid references are very hard to take there because it needs to be done
in interrupt.

True. That makes things rather more awkward.

What about the second idea I mentioned?  If autosuspend fails with
-EBUSY or -EAGAIN, usbcore could schedule another autosuspend attempt.

Alan Stern