powerpc: Remove i8259 irq_host_ops->unmap

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>

diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index 142770c..d18bb27 100644 (file)
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -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,
 };