genirq: Provide default irq init flags
Arch code sets it's own irq_desc.status flags right after boot and for dynamically allocated interrupts. That might involve iterating over a huge array. Allow ARCH_IRQ_INIT_FLAGS to set separate flags aside of IRQ_DISABLED which is the default. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@elte.hu>
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@ -214,6 +214,12 @@ struct irq_chip {
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*/
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#include <asm/hw_irq.h>
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#ifndef ARCH_IRQ_INIT_FLAGS
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# define ARCH_IRQ_INIT_FLAGS 0
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#endif
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#define IRQ_DEFAULT_INIT_FLAGS (IRQ_DISABLED | ARCH_IRQ_INIT_FLAGS)
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struct irqaction;
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extern int setup_irq(unsigned int irq, struct irqaction *new);
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extern void remove_irq(unsigned int irq, struct irqaction *act);
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@ -31,7 +31,7 @@ static void dynamic_irq_init_x(unsigned int irq, bool keep_chip_data)
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/* Ensure we don't have left over values from a previous use of this irq */
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raw_spin_lock_irqsave(&desc->lock, flags);
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desc->status = IRQ_DISABLED;
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desc->status = IRQ_DEFAULT_INIT_FLAGS;
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desc->irq_data.chip = &no_irq_chip;
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desc->handle_irq = handle_bad_irq;
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desc->depth = 1;
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@ -39,7 +39,7 @@ EXPORT_SYMBOL_GPL(nr_irqs);
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#ifdef CONFIG_SPARSE_IRQ
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static struct irq_desc irq_desc_init = {
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.status = IRQ_DISABLED,
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.status = IRQ_DEFAULT_INIT_FLAGS,
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.handle_irq = handle_bad_irq,
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.depth = 1,
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.lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
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@ -113,7 +113,7 @@ void replace_irq_desc(unsigned int irq, struct irq_desc *desc)
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static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = {
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[0 ... NR_IRQS_LEGACY-1] = {
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.status = IRQ_DISABLED,
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.status = IRQ_DEFAULT_INIT_FLAGS,
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.handle_irq = handle_bad_irq,
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.depth = 1,
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.lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
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@ -204,7 +204,7 @@ out_unlock:
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struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
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[0 ... NR_IRQS-1] = {
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.status = IRQ_DISABLED,
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.status = IRQ_DEFAULT_INIT_FLAGS,
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.handle_irq = handle_bad_irq,
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.depth = 1,
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.lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock),
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