irqdomain: document the simple domain first_irq
authorLinus Walleij <linus.walleij@linaro.org>
Thu, 6 Jun 2013 11:10:23 +0000 (12:10 +0100)
committerGrant Likely <grant.likely@linaro.org>
Sat, 8 Jun 2013 20:15:09 +0000 (21:15 +0100)
commit94a63da0ac1a67bfb8b30aec1086523c5031ea5a
treec5931a9a34fc24267f494ee3e773e10dd3bd81ba
parent275e31b10ce20613aedceaa5160129c64b260a98
irqdomain: document the simple domain first_irq

The first_irq needs to be zero to get a linear domain and that
comes with special semantics. We want to simplify this going
forward but some documentation never hurts.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
kernel/irq/irqdomain.c