On Fri, Nov 20, 2015 at 07:59:37PM +0100, Heiner Kallweit wrote: > OK, I interpret this as: > Controller drivers shall return 0 only if the complete message was > transferred successfully.
Yes. > If a controller driver returns an error it has the option to set > actual_length to what was transferred successfully. It should always do this. > This means we can't use patch 4 from Michal because it bails out as soon > as the underlying SPI transfer returns an error. I haven't seen that patch.
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