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genirq: Use modify_status for set_irq_nested_thread

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No need for a separate function in the core code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-14 13:33:16 +01:00
parent 7acdd53e5b
commit 6f91a52d9b
2 changed files with 13 additions and 31 deletions
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16
include/linux/irq.h
View File

@ -74,7 +74,7 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
#define IRQF_MODIFY_MASK \
(IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
IRQ_PER_CPU)
IRQ_PER_CPU | IRQ_NESTED_THREAD)
#ifdef CONFIG_IRQ_PER_CPU
# define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)
@ -307,8 +307,6 @@ set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle)
__set_irq_handler(irq, handle, 1, NULL);
}
extern void set_irq_nested_thread(unsigned int irq, int nest);
void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set);
static inline void irq_set_status_flags(unsigned int irq, unsigned long set)
@ -331,6 +329,14 @@ static inline void irq_set_probe(unsigned int irq)
irq_modify_status(irq, IRQ_NOPROBE, 0);
}
static inline void irq_set_nested_thread(unsigned int irq, bool nest)
{
if (nest)
irq_set_status_flags(irq, IRQ_NESTED_THREAD);
else
irq_clear_status_flags(irq, IRQ_NESTED_THREAD);
}
/* Handle dynamic irq creation and destruction */
extern unsigned int create_irq_nr(unsigned int irq_want, int node);
extern int create_irq(void);
@ -448,6 +454,10 @@ static inline void set_irq_probe(unsigned int irq)
{
irq_set_probe(irq);
}
static inline void set_irq_nested_thread(unsigned int irq, int nest)
{
irq_set_nested_thread(irq, nest);
}
#endif
int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node);

28
kernel/irq/chip.c
View File

@ -164,34 +164,6 @@ struct irq_data *irq_get_irq_data(unsigned int irq)
}
EXPORT_SYMBOL_GPL(irq_get_irq_data);
/**
* set_irq_nested_thread - Set/Reset the IRQ_NESTED_THREAD flag of an irq
*
* @irq: Interrupt number
* @nest: 0 to clear / 1 to set the IRQ_NESTED_THREAD flag
*
* The IRQ_NESTED_THREAD flag indicates that on
* request_threaded_irq() no separate interrupt thread should be
* created for the irq as the handler are called nested in the
* context of a demultiplexing interrupt handler thread.
*/
void set_irq_nested_thread(unsigned int irq, int nest)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
if (!desc)
return;
raw_spin_lock_irqsave(&desc->lock, flags);
if (nest)
desc->status |= IRQ_NESTED_THREAD;
else
desc->status &= ~IRQ_NESTED_THREAD;
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
EXPORT_SYMBOL_GPL(set_irq_nested_thread);
int irq_startup(struct irq_desc *desc)
{
desc->status &= ~IRQ_DISABLED;