diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-02 22:41:14 +0100 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-19 12:58:10 +0100 |
commit | 4699923861513671d3f6ade8efb4e56a9a7ecadf (patch) | |
tree | 862cda99b9af6fe96fda955107f24a7b5cc97a18 /kernel/irq/chip.c | |
parent | genirq: Remove bogus conditional (diff) | |
download | linux-4699923861513671d3f6ade8efb4e56a9a7ecadf.tar.xz linux-4699923861513671d3f6ade8efb4e56a9a7ecadf.zip |
genirq: Consolidate startup/shutdown of interrupts
Aside of duplicated code some of the startup/shutdown sites do not
handle the MASKED/DISABLED flags and the depth field at all. Move that
to a helper function and take care of it there.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110202212551.787481468@linutronix.de>
Diffstat (limited to 'kernel/irq/chip.c')
-rw-r--r-- | kernel/irq/chip.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 31258782742c..988fe7a24282 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -192,6 +192,25 @@ void set_irq_nested_thread(unsigned int irq, int nest) } EXPORT_SYMBOL_GPL(set_irq_nested_thread); +int irq_startup(struct irq_desc *desc) +{ + desc->status &= ~(IRQ_MASKED | IRQ_DISABLED); + desc->depth = 0; + + if (desc->irq_data.chip->irq_startup) + return desc->irq_data.chip->irq_startup(&desc->irq_data); + + desc->irq_data.chip->irq_enable(&desc->irq_data); + return 0; +} + +void irq_shutdown(struct irq_desc *desc) +{ + desc->status |= IRQ_MASKED | IRQ_DISABLED; + desc->depth = 1; + desc->irq_data.chip->irq_shutdown(&desc->irq_data); +} + /* * default enable function */ @@ -211,17 +230,6 @@ static void default_disable(struct irq_data *data) } /* - * default startup function - */ -static unsigned int default_startup(struct irq_data *data) -{ - struct irq_desc *desc = irq_data_to_desc(data); - - desc->irq_data.chip->irq_enable(data); - return 0; -} - -/* * default shutdown function */ static void default_shutdown(struct irq_data *data) @@ -229,7 +237,6 @@ static void default_shutdown(struct irq_data *data) struct irq_desc *desc = irq_data_to_desc(data); desc->irq_data.chip->irq_mask(&desc->irq_data); - desc->status |= IRQ_MASKED; } #ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED @@ -337,8 +344,6 @@ void irq_chip_set_defaults(struct irq_chip *chip) chip->irq_enable = default_enable; if (!chip->irq_disable) chip->irq_disable = default_disable; - if (!chip->irq_startup) - chip->irq_startup = default_startup; /* * We use chip->irq_disable, when the user provided its own. When * we have default_disable set for chip->irq_disable, then we need @@ -747,10 +752,8 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, desc->name = name; if (handle != handle_bad_irq && is_chained) { - desc->status &= ~IRQ_DISABLED; desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE; - desc->depth = 0; - desc->irq_data.chip->irq_startup(&desc->irq_data); + irq_startup(desc); } raw_spin_unlock_irqrestore(&desc->lock, flags); chip_bus_sync_unlock(desc); |