Messages in this thread | | | Date | Fri, 19 Aug 2016 12:03:05 +0100 | From | One Thousand Gnomes <> | Subject | Re: [RFC PATCH 0/3] UART slave device bus |
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> I meant "Either some function similar to userspace's poll() is > needed, ...". Something like uart_dev_wait_for_rx()
You can't really do that - it might never return and then how do you want to handle timeouts and cleanups
> Alternatively the rx function could be a callback, that > is called when there is new data.
That's what the existing API gives you as an ldisc, it can't be immediate in many cases however but must be buffered.
> > I'm assuming the only immediate consumers are in-kernel. > > Yes, but the driver should be notified about incoming data.
Alan
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