kernel/irq/devres.o is only built by default if the arch is using
GENERIC_HARDIRQS, which s390 is not. As a result, drivers using
devm_request{,_threaded}_irq() fail to build on s390. While the utility
of those drivers on a mainframe is questionable, these interfaces
should be supported on s390 as well, since they don't fundamentally
require more than {request,free}_irq.
In the case of CONFIG_PCI, build and link kernel/irq/devres.o into the
kernel image.
Signed-off-by: Kyle McMartin <kyle@xxxxxxxxxx>
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -64,6 +64,8 @@ obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o
obj-y += runtime_instr.o cache.o
endif
+obj-$(CONFIG_PCI) += ../../../kernel/irq/devres.o
+
# vdso
obj-$(CONFIG_64BIT) += vdso64/
obj-$(CONFIG_32BIT) += vdso32/
--
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