[PATCH] powerpc: mpic: minor optimization of ipi handler

[Olof Johansson <olof@lixom.net>]

Jeff Garzik pointed out that we don't actually have to lookup the mpic
instance since it's passed in as the interrupt handler data for IPIs.


Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index e479388..6bf56f4 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -612,11 +612,10 @@ static inline void mpic_eoi(struct mpic *mpic)
 }
 
 #ifdef CONFIG_SMP
-static irqreturn_t mpic_ipi_action(int irq, void *dev_id)
+static irqreturn_t mpic_ipi_action(int irq, void *data)
 {
-	struct mpic *mpic;
+	struct mpic *mpic = data;
 
-	mpic = mpic_find(irq, NULL);
 	smp_message_recv(mpic_irq_to_hw(irq) - mpic->ipi_vecs[0]);
 
 	return IRQ_HANDLED;