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-rw-r--r--kernel/irq/irqdesc.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 886e803..4c60a50 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -257,13 +257,11 @@ int __init early_irq_init(void)
count = ARRAY_SIZE(irq_desc);
for (i = 0; i < count; i++) {
- desc[i].irq_data.irq = i;
- desc[i].irq_data.chip = &no_irq_chip;
desc[i].kstat_irqs = alloc_percpu(unsigned int);
- irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS);
- alloc_masks(desc + i, GFP_KERNEL, node);
- desc_smp_init(desc + i, node);
+ alloc_masks(&desc[i], GFP_KERNEL, node);
+ raw_spin_lock_init(&desc[i].lock);
lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
+ desc_set_defaults(i, &desc[i], node);
}
return arch_early_irq_init();
}
@@ -346,6 +344,12 @@ irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node)
if (!cnt)
return -EINVAL;
+ if (irq >= 0) {
+ if (from > irq)
+ return -EINVAL;
+ from = irq;
+ }
+
mutex_lock(&sparse_irq_lock);
start = bitmap_find_next_zero_area(allocated_irqs, IRQ_BITMAP_BITS,
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