Hi Ingo,

Today's linux-next build (sparc64 defconfig) produced this warning:

kernel/irq/handle.c:26: warning: 'irq_desc_lock_class' defined but not used

Introduced by commit 0b8f1efad30bd58f89961b82dfe68b9edf8fd2ac ("sparse
irq_desc[] array: core kernel and x86 changes") from the sparseirq tree.
irq_desc_lock_class is only used if CONFIG_SPARSE_IRQ is set (I think).
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/