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authorGrant Likely <grant.likely@secretlab.ca>2012-06-03 22:04:39 -0700
committerGrant Likely <grant.likely@secretlab.ca>2012-06-17 15:41:57 -0600
commitaed98048bd1c83469d96932c1901e867d9ba519a (patch)
treeb1347b9e4f3953de7a2ff665fbded5ba2c306d60 /kernel/irq/irqdomain.c
parent732557047128e5c200c3590efba39f10ac46bcb2 (diff)
downloadop-kernel-dev-aed98048bd1c83469d96932c1901e867d9ba519a.zip
op-kernel-dev-aed98048bd1c83469d96932c1901e867d9ba519a.tar.gz
irqdomain: Make ops->map hook optional
There isn't a really compelling reason to force ->map to be populated, so allow it to be left unset. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'kernel/irq/irqdomain.c')
-rw-r--r--kernel/irq/irqdomain.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index b1f774c..d3968e9 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -205,7 +205,8 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
* one can then use irq_create_mapping() to
* explicitly change them
*/
- ops->map(domain, irq, hwirq);
+ if (ops->map)
+ ops->map(domain, irq, hwirq);
/* Clear norequest flags */
irq_clear_status_flags(irq, IRQ_NOREQUEST);
@@ -340,8 +341,8 @@ static int irq_setup_virq(struct irq_domain *domain, unsigned int virq,
irq_data->hwirq = hwirq;
irq_data->domain = domain;
- if (domain->ops->map(domain, virq, hwirq)) {
- pr_debug("irq-%i==>hwirq-0x%lx mapping failed\n", virq, hwirq);
+ 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;
return -1;
@@ -763,12 +764,6 @@ static int __init irq_debugfs_init(void)
__initcall(irq_debugfs_init);
#endif /* CONFIG_IRQ_DOMAIN_DEBUG */
-static int irq_domain_simple_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- return 0;
-}
-
/**
* irq_domain_xlate_onecell() - Generic xlate for direct one cell bindings
*
@@ -831,7 +826,6 @@ int irq_domain_xlate_onetwocell(struct irq_domain *d,
EXPORT_SYMBOL_GPL(irq_domain_xlate_onetwocell);
const struct irq_domain_ops irq_domain_simple_ops = {
- .map = irq_domain_simple_map,
.xlate = irq_domain_xlate_onetwocell,
};
EXPORT_SYMBOL_GPL(irq_domain_simple_ops);
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