Messages in this thread | | | Date | Fri, 15 Oct 2010 07:57:59 +0200 | From | Stefan Richter <> | Subject | Re: Question: how to copy to user space from a tasklet |
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Tom Brown wrote: > [Sorry to have to ask this here - I can't find any driver-specific > newsgroup or mailing lists - are there any??]
linux-newbie perhaps.
> I have a driver which needs to copy device data direct to user space > from a tasklet.
One way would be to use mmap() to allocate the DMA buffer and insert it into the user address space before DMA commences. An additional poll/read/write based protocol or so can be used for buffer management during DMA. -- Stefan Richter -=====-==-=- =-=- -==== http://arcgraph.de/sr/
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