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powerpc: Remove i8259 irq_host_ops->unmap

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It was never called because the host is always IRQ_HOST_MAP_LEGACY.

And what it purported to do was mask the interrupt (which will already
have happend if we shutdown the interrupt), then synchronise_irq and
clear the chip pointer, both of which will have been be done by the
caller were we to call unmap on a legacy irq.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Milton Miller 2011-05-10 19:30:04 +00:00 committed by Benjamin Herrenschmidt
parent df74e70ac2
commit 7ee342bdc3
1 changed files with 0 additions and 13 deletions
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13
arch/powerpc/sysdev/i8259.c
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@ -185,18 +185,6 @@ static int i8259_host_map(struct irq_host *h, unsigned int virq,
return 0;
}
static void i8259_host_unmap(struct irq_host *h, unsigned int virq)
{
/* Make sure irq is masked in hardware */
i8259_mask_irq(irq_get_irq_data(virq));
/* remove chip and handler */
irq_set_chip_and_handler(virq, NULL, NULL);
/* Make sure it's completed */
synchronize_irq(virq);
}
static int i8259_host_xlate(struct irq_host *h, struct device_node *ct,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq, unsigned int *out_flags)
@ -220,7 +208,6 @@ static int i8259_host_xlate(struct irq_host *h, struct device_node *ct,
static struct irq_host_ops i8259_host_ops = {
.match = i8259_host_match,
.map = i8259_host_map,
.unmap = i8259_host_unmap,
.xlate = i8259_host_xlate,
};