sparc: Use the new genirq functionality
Make use of the new features in genirq:
1) Set the chip flag IRCHIP_EOI_IF_HANDLED, which ensures in the
core code that irq_eoi() is only called when the interrupt was
handled. That removes the extra status check in the callback.
2) Use the preflow handler, which is called from the fasteoi core code
before the device handler. That avoids another status check and the
open coded handler redirection.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: sparclinux@vger.kernel.org
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index f766e6b..9efd30f 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -52,6 +52,7 @@
select PERF_USE_VMALLOC
select HAVE_GENERIC_HARDIRQS
select GENERIC_HARDIRQS_NO_DEPRECATED
+ select IRQ_PREFLOW_FASTEOI
config ARCH_DEFCONFIG
string