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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-23 13:12:01 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-23 18:24:16 +0100 |
| commit | c191789c787f488fdb74de0ee55258f71a427704 (patch) | |
| tree | c4cc27449e2ecb9f863c104e5b968b836e64738f /arch/arm/common | |
| parent | ARM: irq migration: ensure migration is handled safely (diff) | |
| download | linux-c191789c787f488fdb74de0ee55258f71a427704.tar.xz linux-c191789c787f488fdb74de0ee55258f71a427704.zip | |
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>
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/gic.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 224377211151..e21c1f4218d3 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -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; - spin_lock(&irq_controller_lock); - desc = irq_to_desc(d->irq); - if (desc == NULL) { - spin_unlock(&irq_controller_lock); + if (cpu >= 8) return -EINVAL; - } + + mask = 0xff << shift; + bit = 1 << (cpu + shift); + + spin_lock(&irq_controller_lock); 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 }; |