[SPARC64]: Let irq_install_pre_handler() get called multiple times.

Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Jun 29, 2006 · 24ac26d · 24ac26d
1 parent 946ea09
commit 24ac26d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git 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);
 }