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Merge branch 'for-russell' of git://codeaurora.org/quic/kernel/dwalker/linux-msm into devel-stable

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Russell King 2010-10-08 10:06:58 +01:00
commit 4fa046655b
1 changed files with 0 additions and 14 deletions
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14
arch/arm/common/gic.c
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@ -67,25 +67,11 @@ static inline unsigned int gic_irq(unsigned int irq)
/*
* Routines to acknowledge, disable and enable interrupts
*
* Linux assumes that when we're done with an interrupt we need to
* unmask it, in the same way we need to unmask an interrupt when
* we first enable it.
*
* The GIC has a separate notion of "end of interrupt" to re-enable
* an interrupt after handling, in order to support hardware
* prioritisation.
*
* We can make the GIC behave in the way that Linux expects by making
* our "acknowledge" routine disable the interrupt, then mark it as
* complete.
*/
static void gic_ack_irq(unsigned int irq)
{
u32 mask = 1 << (irq % 32);
spin_lock(&irq_controller_lock);
writel(mask, gic_dist_base(irq) + GIC_DIST_ENABLE_CLEAR + (gic_irq(irq) / 32) * 4);
writel(gic_irq(irq), gic_cpu_base(irq) + GIC_CPU_EOI);
spin_unlock(&irq_controller_lock);
}