tree bd0604f5d7308d63cafbb1e3134580e284d86a50
parent bab41e9be75121c473b00df2ffa33af3c44066a7
author Michael Ellerman <michael@ellerman.id.au> 1175757550 +1000
committer Greg Kroah-Hartman <gregkh@suse.de> 1178157757 -0700

MSI: Use a list instead of the custom link structure

The msi descriptors are linked together with what looks a lot like
a linked list, but isn't a struct list_head list. Make it one.

The only complication is that previously we walked a list of irqs, and
got the descriptor for each with get_irq_msi(). Now we have a list of
descriptors and need to get the irq out of it, so it needs to be in the
actual struct msi_desc. We use 0 to indicate no irq is setup.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>