On Tue, Apr 14, 2015 at 03:40:17PM +0200, Pelle Nilsson wrote: > Some controller drivers have no need of this callback (spi-altera even > causes a NULL pointer dereference because it doesn't register the callback, > falsely assuming that it is already optional).
I've applied this but really for something like this the commit message should be explaining *why* it's reasonable for the callback to be omitted.
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