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List:       freebsd-hackers
Subject:    bus_dmamap_load_uio and uiomove
From:       Jimmy Olgeni <olgeni () uli ! it>
Date:       2006-05-30 12:49:22
Message-ID: 20060530143518.C36362 () server ! localdomain ! net
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Hello,

Just quick busdma question...

I'm currently upgrading a custom device driver to use 
bus_dmamap_load_uio rather than uiomove. Everything works fine, but 
calls to "write" fail unless I set uio->uio_resid to 0 by hand (as I'm 
not using uiomove anymore).

Am I supposed to set uio_resid by hand when using bus_dmamap_load_uio, 
or is there a better way to signal that all the data in uio was used?

-- 
jimmy
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