mfd: Kill off set_irq_flags usage

set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c
index 8520bd68c1ff..fd8b15cd84fd 100644
--- a/drivers/mfd/max8925-core.c
+++ b/drivers/mfd/max8925-core.c
@@ -650,11 +650,8 @@ static int max8925_irq_domain_map(struct irq_domain *d, unsigned int virq,
 	irq_set_chip_data(virq, d->host_data);
 	irq_set_chip_and_handler(virq, &max8925_irq_chip, handle_edge_irq);
 	irq_set_nested_thread(virq, 1);
-#ifdef CONFIG_ARM
-	set_irq_flags(virq, IRQF_VALID);
-#else
 	irq_set_noprobe(virq);
-#endif
+
 	return 0;
 }