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avr32: Cleanup eic_set_irq_type() 

No need to fiddle in irq_desc. The trigger mask can be written back
into irq_data. Return IRQ_SET_MASK_OK_NOCOPY, so the generic code wont
overwrite it again.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
This commit is contained in:
Thomas Gleixner 2011-03-24 17:24:04 +01:00
parent db82817bcb
commit 62ec05d1ea
1 changed files with 10 additions and 19 deletions
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29
arch/avr32/mach-at32ap/extint.c
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@ -89,18 +89,14 @@ static void eic_unmask_irq(struct irq_chip *d)
static int eic_set_irq_type(struct irq_chip *d, unsigned int flow_type)
{
struct eic *eic = irq_data_get_irq_chip_data(data);
struct irq_desc *desc;
unsigned int irq = d->irq;
unsigned int i = irq - eic->first_irq;
u32 mode, edge, level;
int ret = 0;
flow_type &= IRQ_TYPE_SENSE_MASK;
if (flow_type == IRQ_TYPE_NONE)
flow_type = IRQ_TYPE_LEVEL_LOW;
desc = irq_to_desc(irq);
mode = eic_readl(eic, MODE);
edge = eic_readl(eic, EDGE);
level = eic_readl(eic, LEVEL);
@ -123,25 +119,20 @@ static int eic_set_irq_type(struct irq_chip *d, unsigned int flow_type)
edge &= ~(1 << i);
break;
default:
ret = -EINVAL;
break;
return -EINVAL;
}
if (ret == 0) {
eic_writel(eic, MODE, mode);
eic_writel(eic, EDGE, edge);
eic_writel(eic, LEVEL, level);
eic_writel(eic, MODE, mode);
eic_writel(eic, EDGE, edge);
eic_writel(eic, LEVEL, level);
if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) {
flow_type |= IRQ_LEVEL;
__irq_set_handler_locked(irq, handle_level_irq);
} else
__irq_set_handler_locked(irq, handle_edge_irq);
desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
desc->status |= flow_type;
}
irqd_set_trigger_type(d, flow_type);
if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
__irq_set_handler_locked(irq, handle_level_irq);
else
__irq_set_handler_locked(irq, handle_edge_irq);
return ret;
return IRQ_SET_MASK_OK_NOCOPY;
}
static struct irq_chip eic_chip = {