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powerpc: cpm2_pic: Cleanup flow type handling 

The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus.

The new core code allows to update the type in irq_data and return
IRQ_SET_MASK_OK_NOCOPY, so the core code will not touch it, except for
setting the IRQ_LEVEL flag.

Use the proper accessors for setting the irq handlers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-03-25 16:07:51 +01:00
parent 00e70bad1a
commit a28ab38c44
1 changed files with 8 additions and 10 deletions
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18
arch/powerpc/sysdev/cpm2_pic.c
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@ -140,7 +140,6 @@ static void cpm2_end_irq(struct irq_data *d)
static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
{
unsigned int src = virq_to_hw(d->irq);
struct irq_desc *desc = irq_to_desc(d->irq);
unsigned int vold, vnew, edibit;
/* Port C interrupts are either IRQ_TYPE_EDGE_FALLING or
@ -162,13 +161,11 @@ static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
goto err_sense;
}
desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
if (flow_type & IRQ_TYPE_LEVEL_LOW) {
desc->status |= IRQ_LEVEL;
desc->handle_irq = handle_level_irq;
} else
desc->handle_irq = handle_edge_irq;
irqd_set_trigger_type(d, flow_type);
if (flow_type & IRQ_TYPE_LEVEL_LOW)
__set_irq_handler_unlocked(d->irq, handle_level_irq);
else
__set_irq_handler_unlocked(d->irq, handle_edge_irq);
/* internal IRQ senses are LEVEL_LOW
* EXT IRQ and Port C IRQ senses are programmable
@ -179,7 +176,8 @@ static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
if (src >= CPM2_IRQ_PORTC15 && src <= CPM2_IRQ_PORTC0)
edibit = (31 - (CPM2_IRQ_PORTC0 - src));
else
return (flow_type & IRQ_TYPE_LEVEL_LOW) ? 0 : -EINVAL;
return (flow_type & IRQ_TYPE_LEVEL_LOW) ?
IRQ_SET_MASK_OK_NOCOPY : -EINVAL;
vold = in_be32(&cpm2_intctl->ic_siexr);
@ -190,7 +188,7 @@ static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
if (vold != vnew)
out_be32(&cpm2_intctl->ic_siexr, vnew);
return 0;
return IRQ_SET_MASK_OK_NOCOPY;
err_sense:
pr_err("CPM2 PIC: sense type 0x%x not supported\n", flow_type);