diff options
Diffstat (limited to 'drivers/irqchip/irq-i8259.c')
| -rw-r--r-- | drivers/irqchip/irq-i8259.c | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/drivers/irqchip/irq-i8259.c b/drivers/irqchip/irq-i8259.c index 6b304eb39bd2..1aec12c6d9ac 100644 --- a/drivers/irqchip/irq-i8259.c +++ b/drivers/irqchip/irq-i8259.c @@ -38,6 +38,7 @@ static void disable_8259A_irq(struct irq_data *d); static void enable_8259A_irq(struct irq_data *d); static void mask_and_ack_8259A(struct irq_data *d); static void init_8259A(int auto_eoi); +static int (*i8259_poll)(void) = i8259_irq; static struct irq_chip i8259A_chip = { .name = "XT-PIC", @@ -51,6 +52,11 @@ static struct irq_chip i8259A_chip = { * 8259A PIC functions to handle ISA devices: */ +void i8259_set_poll(int (*poll)(void)) +{ + i8259_poll = poll; +} + /* * This contains the irq mask for both 8259A irq controllers, */ @@ -89,24 +95,6 @@ static void enable_8259A_irq(struct irq_data *d) raw_spin_unlock_irqrestore(&i8259A_lock, flags); } -int i8259A_irq_pending(unsigned int irq) -{ - unsigned int mask; - unsigned long flags; - int ret; - - irq -= I8259A_IRQ_BASE; - mask = 1 << irq; - raw_spin_lock_irqsave(&i8259A_lock, flags); - if (irq < 8) - ret = inb(PIC_MASTER_CMD) & mask; - else - ret = inb(PIC_SLAVE_CMD) & (mask >> 8); - raw_spin_unlock_irqrestore(&i8259A_lock, flags); - - return ret; -} - void make_8259A_irq(unsigned int irq) { disable_irq_nosync(irq); @@ -355,7 +343,7 @@ void __init init_i8259_irqs(void) static void i8259_irq_dispatch(struct irq_desc *desc) { struct irq_domain *domain = irq_desc_get_handler_data(desc); - int hwirq = i8259_irq(); + int hwirq = i8259_poll(); unsigned int irq; if (hwirq < 0) @@ -370,13 +358,15 @@ int __init i8259_of_init(struct device_node *node, struct device_node *parent) struct irq_domain *domain; unsigned int parent_irq; + domain = __init_i8259_irqs(node); + parent_irq = irq_of_parse_and_map(node, 0); if (!parent_irq) { pr_err("Failed to map i8259 parent IRQ\n"); + irq_domain_remove(domain); return -ENODEV; } - domain = __init_i8259_irqs(node); irq_set_chained_handler_and_data(parent_irq, i8259_irq_dispatch, domain); return 0; |