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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-09-27 21:01:37 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-10-12 16:39:06 +0200 |
| commit | 1318a481fc37c503a901b96ae06b692ca2b21af5 (patch) | |
| tree | 2b1bb8f52af5938759af38efdfa8a868b02d5804 | |
| parent | d895f51ebb54cefe367bda135fcf2cd734d51d03 (diff) | |
| download | kernel_samsung_smdk4412-1318a481fc37c503a901b96ae06b692ca2b21af5.zip kernel_samsung_smdk4412-1318a481fc37c503a901b96ae06b692ca2b21af5.tar.gz kernel_samsung_smdk4412-1318a481fc37c503a901b96ae06b692ca2b21af5.tar.bz2 | |
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>
| -rw-r--r-- | include/linux/irq.h | 6 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 2 | ||||
| -rw-r--r-- | kernel/irq/irqdesc.c | 6 |
3 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index bea4055..30a3009 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -214,6 +214,12 @@ struct irq_chip { */ #include <asm/hw_irq.h> +#ifndef ARCH_IRQ_INIT_FLAGS +# define ARCH_IRQ_INIT_FLAGS 0 +#endif + +#define IRQ_DEFAULT_INIT_FLAGS (IRQ_DISABLED | ARCH_IRQ_INIT_FLAGS) + struct irqaction; extern int setup_irq(unsigned int irq, struct irqaction *new); extern void remove_irq(unsigned int irq, struct irqaction *act); diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 659be32..3405761 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -31,7 +31,7 @@ static void dynamic_irq_init_x(unsigned int irq, bool keep_chip_data) /* Ensure we don't have left over values from a previous use of this irq */ raw_spin_lock_irqsave(&desc->lock, flags); - desc->status = IRQ_DISABLED; + desc->status = IRQ_DEFAULT_INIT_FLAGS; desc->irq_data.chip = &no_irq_chip; desc->handle_irq = handle_bad_irq; desc->depth = 1; diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 78ff426..29963f9 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -39,7 +39,7 @@ EXPORT_SYMBOL_GPL(nr_irqs); #ifdef CONFIG_SPARSE_IRQ static struct irq_desc irq_desc_init = { - .status = IRQ_DISABLED, + .status = IRQ_DEFAULT_INIT_FLAGS, .handle_irq = handle_bad_irq, .depth = 1, .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock), @@ -113,7 +113,7 @@ void replace_irq_desc(unsigned int irq, struct irq_desc *desc) static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = { [0 ... NR_IRQS_LEGACY-1] = { - .status = IRQ_DISABLED, + .status = IRQ_DEFAULT_INIT_FLAGS, .handle_irq = handle_bad_irq, .depth = 1, .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc_init.lock), @@ -204,7 +204,7 @@ out_unlock: struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = { [0 ... NR_IRQS-1] = { - .status = IRQ_DISABLED, + .status = IRQ_DEFAULT_INIT_FLAGS, .handle_irq = handle_bad_irq, .depth = 1, .lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock), |