diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-03-27 11:02:49 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-03-27 17:45:58 +0200 |
| commit | 801a0e9ae36e9b487092e31699d28c0b9a21ad52 (patch) | |
| tree | c448d150797272b09417f5410e7570742e59368b | |
| parent | d72274e5895d11570a0a4a3214a1933c86d5ccb7 (diff) | |
genirq: Add irq disabled flag to irq_data state
Some irq_chip implementation require to know the disabled state of the
interrupt in certain callbacks. Add a state flag and accessor to
irq_data.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/irq.h | 8 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 5 | ||||
| -rw-r--r-- | kernel/irq/irqdesc.c | 1 |
3 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 5d876c9b3a3..8649b0fb9da 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -174,6 +174,8 @@ struct irq_data { * from suspend * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process * context + * IRQD_IRQ_DISABLED - Some chip function need to know the + * disabled state. */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -184,6 +186,7 @@ enum { IRQD_LEVEL = (1 << 13), IRQD_WAKEUP_STATE = (1 << 14), IRQD_MOVE_PCNTXT = (1 << 15), + IRQD_IRQ_DISABLED = (1 << 16), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -235,6 +238,11 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d) return d->state_use_accessors & IRQD_MOVE_PCNTXT; } +static inline bool irqd_irq_disabled(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_IRQ_DISABLED; +} + /** * struct irq_chip - hardware interrupt chip descriptor * diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index c35d74c08b5..0a890bdd9c6 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -141,12 +141,14 @@ EXPORT_SYMBOL_GPL(irq_get_irq_data); static void irq_state_clr_disabled(struct irq_desc *desc) { desc->istate &= ~IRQS_DISABLED; + irqd_clear(&desc->irq_data, IRQD_IRQ_DISABLED); irq_compat_clr_disabled(desc); } static void irq_state_set_disabled(struct irq_desc *desc) { desc->istate |= IRQS_DISABLED; + irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED); irq_compat_set_disabled(desc); } @@ -648,8 +650,7 @@ __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, if (handle == handle_bad_irq) { if (desc->irq_data.chip != &no_irq_chip) mask_ack_irq(desc); - irq_compat_set_disabled(desc); - desc->istate |= IRQS_DISABLED; + irq_state_set_disabled(desc); desc->depth = 1; } desc->handle_irq = handle; diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 6fb014f172f..96c3268a509 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -80,6 +80,7 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node) desc->irq_data.handler_data = NULL; desc->irq_data.msi_desc = NULL; irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS); + irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED); desc->istate = IRQS_DISABLED; desc->handle_irq = handle_bad_irq; desc->depth = 1; |