xen/events: Add WARN_ON when quick lookup found invalid type.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Wed, 23 May 2012 17:28:44 +0000 (13:28 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Wed, 30 May 2012 14:16:24 +0000 (10:16 -0400)
commit5e152e6c4b0da84c66cad56597b42c4ecedb0448
tree2164d6f163014aa01cdaa0d9b416e3fafb3621f6
parent5842f5768599094758931b74190cdf93641a8e35
xen/events: Add WARN_ON when quick lookup found invalid type.

All of the bind_XYZ_to_irq do a quick lookup to see if the
event exists. And if it does, then the initialized IRQ number
is returned instead of initializing a new IRQ number.

This patch adds an extra logic to check that the type returned
is proper one and that there is an IRQ handler setup for it.

This patch has the benefit of being able to find drivers that
are doing something naught.

[v1: Enhanced based on Stefano's review]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
drivers/xen/events.c