tree 1caacf42bf7cf09104f88fa95a128c2bc26764e4
parent 29210475945f13c61a7994b54ccf37692a075aeb
author Ben Dooks <ben-linux@fluff.org> 1218226955 +0100
committer Ben Dooks <ben-linux@fluff.org> 1218286313 +0100

[ARM] CATS: Do not try and map bad PCI IRQ numbers

The cats_map_irq() function in the Simtec CATS support
code is mapping IRQ 255 (invalid IRQ) into what is a
supposedly valid interrupt numner which can cause problems
with other devices then seeing an interrupt they cannot
claim.

If the IRQ number if >= 255, then return -1 as this is not
something we can map.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>