From 6fde40f3f1a9641ea0a41471cea77f34c0cbb36f Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 4 Jun 2007 22:59:59 +1000 Subject: [POWERPC] Split virq setup logic out into irq_setup_virq() A future patch will need the logic at the end of irq_create_mapping() which setups a virq and installs it in the irq_map. So split it out into a new function irq_setup_virq(). Signed-off-by: Michael Ellerman Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/irq.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) (limited to 'arch/powerpc/kernel/irq.c') diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 0a769893c5c..d806b18d9ff 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -596,6 +596,25 @@ static void irq_radix_rdunlock(unsigned long flags) local_irq_restore(flags); } +static int irq_setup_virq(struct irq_host *host, unsigned int virq, + irq_hw_number_t hwirq) +{ + /* Clear IRQ_NOREQUEST flag */ + get_irq_desc(virq)->status &= ~IRQ_NOREQUEST; + + /* map it */ + smp_wmb(); + irq_map[virq].hwirq = hwirq; + smp_mb(); + + if (host->ops->map(host, virq, hwirq)) { + pr_debug("irq: -> mapping failed, freeing\n"); + irq_free_virt(virq, 1); + return -1; + } + + return 0; +} unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq) @@ -644,18 +663,9 @@ unsigned int irq_create_mapping(struct irq_host *host, } pr_debug("irq: -> obtained virq %d\n", virq); - /* Clear IRQ_NOREQUEST flag */ - get_irq_desc(virq)->status &= ~IRQ_NOREQUEST; - - /* map it */ - smp_wmb(); - irq_map[virq].hwirq = hwirq; - smp_mb(); - if (host->ops->map(host, virq, hwirq)) { - pr_debug("irq: -> mapping failed, freeing\n"); - irq_free_virt(virq, 1); + if (irq_setup_virq(host, virq, hwirq)) return NO_IRQ; - } + return virq; } EXPORT_SYMBOL_GPL(irq_create_mapping); -- cgit v1.2.3