Don't call a NULL ack function in the generic IRQ code.
commitbeeca08738c4c4024c81a591812bfe38f8c436c0
authorPaul Mackerras <paulus@samba.org>
Wed, 28 Sep 2005 10:29:44 +0000 (28 20:29 +1000)
committerPaul Mackerras <paulus@samba.org>
Wed, 28 Sep 2005 10:29:44 +0000 (28 20:29 +1000)
tree2d668f8529c54562c13ee06f2777d0f145f92c1e
parent20c8c2106305729e7d5e06f6c3d390e965a3dd34
Don't call a NULL ack function in the generic IRQ code.

Some IRQ controllers don't need an ack function (e.g. OpenPIC on
PPC platforms) and for them we'd rather not have the overhead
of doing an indirect call to a function that does nothing.

Signed-off-by: Paul Mackerras <paulus@samba.org>
kernel/irq/handle.c