arm64: Convert handle_IRQ to use __handle_domain_irq

In order to limit code duplication, convert the architecture specific
handle_IRQ to use the generic __handle_domain_irq function.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lkml.kernel.org/r/1409047421-27649-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

2 files changed, 2 insertions, 17 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fd4e81a4e1ce..1f16ed96f3f6 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -30,6 +30,7 @@ config ARM64
         select GENERIC_STRNCPY_FROM_USER
         select GENERIC_STRNLEN_USER
         select GENERIC_TIME_VSYSCALL
+        select HANDLE_DOMAIN_IRQ
         select HARDIRQS_SW_RESEND
         select HAVE_ARCH_AUDITSYSCALL
         select HAVE_ARCH_JUMP_LABEL
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index 0f08dfd69ebc..2c0e2a744723 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -48,23 +48,7 @@ int arch_show_interrupts(struct seq_file *p, int prec)
  */
 void handle_IRQ(unsigned int irq, struct pt_regs *regs)
 {
-        struct pt_regs *old_regs = set_irq_regs(regs);
-
-        irq_enter();
-
-        /*
-         * Some hardware gives randomly wrong interrupts.  Rather
-         * than crashing, do something sensible.
-         */
-        if (unlikely(irq >= nr_irqs)) {
-                pr_warn_ratelimited("Bad IRQ%u\n", irq);
-                ack_bad_irq(irq);
-        } else {
-                generic_handle_irq(irq);
-        }
-
-        irq_exit();
-        set_irq_regs(old_regs);
+        __handle_domain_irq(NULL, irq, false, regs);
 }
 
 void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))