arm: Mark XScale performance monitor unit (PMU) interrupt IRQF_NODELAY

PMU results are not useful if that ISR is run as thread.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

 arch/arm/oprofile/op_model_xscale.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

arch/arm/oprofile/op_model_xscale.c

@@ -381,8 +381,9 @@ static int xscale_pmu_start(void)
 {
 	int ret;
 	u32 pmnc = read_pmnc();
+	unsigned long irq_flags = IRQF_DISABLED | IRQF_NODELAY;
 
-	ret = request_irq(XSCALE_PMU_IRQ, xscale_pmu_interrupt, IRQF_DISABLED,
+	ret = request_irq(XSCALE_PMU_IRQ, xscale_pmu_interrupt, irq_flags,
 			"XScale PMU", (void *)results);
 
 	if (ret < 0) {