diff options
Diffstat (limited to 'kernel/irq/chip.c')
| -rw-r--r-- | kernel/irq/chip.c | 43 |
1 files changed, 13 insertions, 30 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index d96d6f687c48..4895fde4eb93 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -24,11 +24,9 @@ */ void dynamic_irq_init(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - /* first time to use this irq_desc */ - desc = irq_to_desc(irq); if (!desc) { WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq); return; @@ -58,10 +56,9 @@ void dynamic_irq_init(unsigned int irq) */ void dynamic_irq_cleanup(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq); return; @@ -90,10 +87,9 @@ void dynamic_irq_cleanup(unsigned int irq) */ int set_irq_chip(unsigned int irq, struct irq_chip *chip) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { WARN(1, KERN_ERR "Trying to install chip for IRQ%d\n", irq); return -EINVAL; @@ -118,11 +114,10 @@ EXPORT_SYMBOL(set_irq_chip); */ int set_irq_type(unsigned int irq, unsigned int type) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; int ret = -ENXIO; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq); return -ENODEV; @@ -147,10 +142,9 @@ EXPORT_SYMBOL(set_irq_type); */ int set_irq_data(unsigned int irq, void *data) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to install controller data for IRQ%d\n", irq); @@ -173,10 +167,9 @@ EXPORT_SYMBOL(set_irq_data); */ int set_irq_msi(unsigned int irq, struct msi_desc *entry) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to install msi data for IRQ%d\n", irq); @@ -200,10 +193,9 @@ int set_irq_msi(unsigned int irq, struct msi_desc *entry) */ int set_irq_chip_data(unsigned int irq, void *data) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to install chip data for IRQ%d\n", irq); @@ -228,9 +220,8 @@ EXPORT_SYMBOL(set_irq_chip_data); */ static void default_enable(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); - desc = irq_to_desc(irq); desc->chip->unmask(irq); desc->status &= ~IRQ_MASKED; } @@ -247,11 +238,9 @@ static void default_disable(unsigned int irq) */ static unsigned int default_startup(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); - desc = irq_to_desc(irq); desc->chip->enable(irq); - return 0; } @@ -260,9 +249,8 @@ static unsigned int default_startup(unsigned int irq) */ static void default_shutdown(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); - desc = irq_to_desc(irq); desc->chip->mask(irq); desc->status |= IRQ_MASKED; } @@ -550,10 +538,9 @@ void __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to install type control for IRQ%d\n", irq); @@ -614,13 +601,11 @@ set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, void __init set_irq_noprobe(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to mark IRQ%d non-probeable\n", irq); - return; } @@ -631,13 +616,11 @@ void __init set_irq_noprobe(unsigned int irq) void __init set_irq_probe(unsigned int irq) { - struct irq_desc *desc; + struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; - desc = irq_to_desc(irq); if (!desc) { printk(KERN_ERR "Trying to mark IRQ%d probeable\n", irq); - return; } |