[ARM] 5455/1: Fix IRQ noise from VIC code

The VIC code will attempt to perform som
default set_irq_chip() and set_irq_chip_data()
on all IRQs supported by the VIC, while the new
IRQ handling code strictly checks for the global
NR_IRQS to be respected also for these IRQs.

This patch will respect the interrupt mask passed
to the VIC driver and will prevent it from
attempting to call these functions on any unused
interrupts.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index ecf0bfbab107362e38d8debdd7437103e7e02202..b2a781d9ce05a875d2ab30f7375307bec7575b21 100644 (file)
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -85,12 +85,11 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
        writel(32, base + VIC_PL190_DEF_VECT_ADDR);
 
        for (i = 0; i < 32; i++) {
-               unsigned int irq = irq_start + i;
-
-               set_irq_chip(irq, &vic_chip);
-               set_irq_chip_data(irq, base);
-
                if (vic_sources & (1 << i)) {
+                       unsigned int irq = irq_start + i;
+
+                       set_irq_chip(irq, &vic_chip);
+                       set_irq_chip_data(irq, base);
                        set_irq_handler(irq, handle_level_irq);
                        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
                }