arm: Use irq flag setter function

Use the proper accessor function instead of fiddling in the status
bits directly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 3535d37..9b3a6d8 100644 (file)
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -144,24 +144,21 @@ asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
 
 void set_irq_flags(unsigned int irq, unsigned int iflags)
 {
-       struct irq_desc *desc;
-       unsigned long flags;
+       unsigned long clr = 0, set = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
 
        if (irq >= nr_irqs) {
                printk(KERN_ERR "Trying to set irq flags for IRQ%d\n", irq);
                return;
        }
 
-       desc = irq_to_desc(irq);
-       raw_spin_lock_irqsave(&desc->lock, flags);
-       desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
        if (iflags & IRQF_VALID)
-               desc->status &= ~IRQ_NOREQUEST;
+               clr |= IRQ_NOREQUEST;
        if (iflags & IRQF_PROBE)
-               desc->status &= ~IRQ_NOPROBE;
+               clr |= IRQ_NOPROBE;
        if (!(iflags & IRQF_NOAUTOEN))
-               desc->status &= ~IRQ_NOAUTOEN;
-       raw_spin_unlock_irqrestore(&desc->lock, flags);
+               clr |= IRQ_NOAUTOEN;
+       /* Order is clear bits in "clr" then set bits in "set" */
+       irq_modify_status(irq, clr, set & ~clr);
 }
 
 void __init init_IRQ(void)