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Subject: Re: [PATCH 5/9] mfd: Add UART support for the ST-Ericsson CG2900.
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> The reason is that the work is generated so often that a work is not
> finished before next work of same type comes. This is especially true
> for transmit and receive. Then I get 0 back when queuing the work and
> there is no real way to solve it from what I can see than to allocate
> new work structures every time.

So if that is the case what bounds your memory usage - can a busy box end
up with thousands of work queue slos used ? It sounds like your model is
perhaps wrong - if there is a continual stream of work maybe you should
simply have a kernel thread to handle it if it cannot be deferred
- remember ldisc code is able to sleep in most paths.