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-rw-r--r--arch/sparc64/kernel/irq.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index ab9e640..eebe02f 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -414,6 +414,10 @@ void irq_install_pre_handler(int virt_irq,
data->pre_handler_arg1 = arg1;
data->pre_handler_arg2 = arg2;
+ if (desc->chip == &sun4u_irq_ack ||
+ desc->chip == &sun4v_irq_ack)
+ return;
+
desc->chip = (desc->chip == &sun4u_irq ?
&sun4u_irq_ack : &sun4v_irq_ack);
}
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