On Tue, 1 Jul 2008, Oliver Neukum wrote:
Ok, I see... So what does a device do when it is suspended and a
request comes in? Does it automatically resume and service the request
(and potentially goes back to sleep)? Does it queue the request for
later? Ignore it? Is it a system-wide policy or up to the device
[class]?
Return an error. If you queue, how much would you queue?
There's no sane answer, so you better fail right away.
I guess that Dmitry's question was about the behavior of the driver,
right? For example in situation when the LED state changes on PS/2
keyboard, what should the USB keyboard driver do for a suspended USB
keyboard.
I really don't think we want to return error in such cases. Either resume
the device, or queue some requests (maybe depending on the type of
requests), right?
--
Jiri Kosina
SUSE Labs
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