From f5a1ad057e6da5d0fc9c5677ff44797d193d3e62 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 20 Jul 2012 10:33:19 +0100 Subject: irqdomain: Improve diagnostics when a domain mapping fails When the map operation fails log the error code we get and add a WARN_ON() so we get a backtrace (which should help work out which interrupt is the source of the issue). Signed-off-by: Mark Brown Signed-off-by: Grant Likely --- kernel/irq/irqdomain.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'kernel/irq/irqdomain.c') diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 170724a07a2..49a77727db4 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -415,7 +415,7 @@ int irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base, { unsigned int virq = irq_base; irq_hw_number_t hwirq = hwirq_base; - int i; + int i, ret; pr_debug("%s(%s, irqbase=%i, hwbase=%i, count=%i)\n", __func__, of_node_full_name(domain->of_node), irq_base, (int)hwirq_base, count); @@ -436,11 +436,16 @@ int irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base, irq_data->hwirq = hwirq; irq_data->domain = domain; - if (domain->ops->map && domain->ops->map(domain, virq, hwirq)) { - pr_err("irq-%i==>hwirq-0x%lx mapping failed\n", virq, hwirq); - irq_data->domain = NULL; - irq_data->hwirq = 0; - goto err_unmap; + if (domain->ops->map) { + ret = domain->ops->map(domain, virq, hwirq); + if (ret != 0) { + pr_err("irq-%i==>hwirq-0x%lx mapping failed: %d\n", + virq, hwirq, ret); + WARN_ON(1); + irq_data->domain = NULL; + irq_data->hwirq = 0; + goto err_unmap; + } } switch (domain->revmap_type) { -- cgit v1.2.3