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ARM: irq migration: update GIC migration code 

This cleans up after the conversion to irq_data.  Rename the function
to match the method, and remove the now useless lookup of the irq
descriptor which is never used.  Move the bitmask calculation out of
the irq_controller_lock region.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-01-23 12:12:01 +00:00
parent 617912440b
commit c191789c78
1 changed files with 12 additions and 13 deletions
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25
arch/arm/common/gic.c
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@ -142,25 +142,24 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
}
#ifdef CONFIG_SMP
static int
gic_set_cpu(struct irq_data *d, const struct cpumask *mask_val, bool force)
static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
bool force)
{
void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3);
unsigned int shift = (d->irq % 4) * 8;
unsigned int cpu = cpumask_first(mask_val);
u32 val;
struct irq_desc *desc;
u32 val, mask, bit;
if (cpu >= 8)
return -EINVAL;
mask = 0xff << shift;
bit = 1 << (cpu + shift);
spin_lock(&irq_controller_lock);
desc = irq_to_desc(d->irq);
if (desc == NULL) {
spin_unlock(&irq_controller_lock);
return -EINVAL;
}
d->node = cpu;
val = readl(reg) & ~(0xff << shift);
val |= 1 << (cpu + shift);
writel(val, reg);
val = readl(reg) & ~mask;
writel(val | bit, reg);
spin_unlock(&irq_controller_lock);
return 0;
@ -203,7 +202,7 @@ static struct irq_chip gic_chip = {
.irq_unmask = gic_unmask_irq,
.irq_set_type = gic_set_type,
#ifdef CONFIG_SMP
.irq_set_affinity = gic_set_cpu,
.irq_set_affinity = gic_set_affinity,
#endif
};