svn commit: r246881 - head/sys/arm/arm

[Daan Vreeken]

Hi Ian,

On Saturday 16 February 2013 21:43:16 Ian Lepore wrote:
> Author: ian
> Date: Sat Feb 16 20:43:16 2013
> New Revision: 246881
> URL: http://svnweb.freebsd.org/changeset/base/246881
>
> Log:
>   In _bus_dmamap_addseg(), the return value must be zero for error, or the
> size actually added to the segment (possibly smaller than the requested
> size if boundary crossings had to be avoided).

Your fix just beat me by minutes to reporting this bug. I'm rebasing a local 
source tree and ran into a situation where DMA wasn't working without any 
obvious reason.
It turned out to be _bus_dmamap_load_buffer() returning EFBIG to 
bus_dmamap_load() because of the above.


Thanks!
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Ing. Daan Vreeken
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