diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-07-22 14:49:13 +0100 |
|---|---|---|
| committer | Graeme Gregory <graeme.gregory@linaro.org> | 2015-08-31 12:14:46 +0100 |
| commit | 7c832754fd443b355fe12d72ecef96b7fec7f3fa (patch) | |
| tree | 75313e806e5585e91af0af0ace24c597e4d3662d | |
| parent | 559d62ebf098fab4afeae94ee98f10287b1f23da (diff) | |
acpi: gsi: Always perform an irq domain lookup
Instead of directly passing NULL to the various irq_domain functions,
start by looking up the domain with a domain_token.
As domain_token is permanently set to NULL, the lookup function will
return the same value (no domain found) and the default will be used,
preserving the current behaviour.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | drivers/acpi/gsi.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/acpi/gsi.c b/drivers/acpi/gsi.c index 38208f2d0e69..b2af93b4bc81 100644 --- a/drivers/acpi/gsi.c +++ b/drivers/acpi/gsi.c @@ -14,6 +14,8 @@ enum acpi_irq_model_id acpi_irq_model; +static void *acpi_gsi_domain_token; + static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity) { switch (polarity) { @@ -45,12 +47,9 @@ static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity) */ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) { - /* - * Only default domain is supported at present, always find - * the mapping corresponding to default domain by passing NULL - * as irq_domain parameter - */ - *irq = irq_find_mapping(NULL, gsi); + struct irq_domain *d = irq_find_host(acpi_gsi_domain_token); + + *irq = irq_find_mapping(d, gsi); /* * *irq == 0 means no mapping, that should * be reported as a failure @@ -74,13 +73,9 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, { unsigned int irq; unsigned int irq_type = acpi_gsi_get_irq_type(trigger, polarity); + struct irq_domain *d = irq_find_host(acpi_gsi_domain_token); - /* - * There is no way at present to look-up the IRQ domain on ACPI, - * hence always create mapping referring to the default domain - * by passing NULL as irq_domain parameter - */ - irq = irq_create_mapping(NULL, gsi); + irq = irq_create_mapping(d, gsi); if (!irq) return -EINVAL; @@ -98,7 +93,8 @@ EXPORT_SYMBOL_GPL(acpi_register_gsi); */ void acpi_unregister_gsi(u32 gsi) { - int irq = irq_find_mapping(NULL, gsi); + struct irq_domain *d = irq_find_host(acpi_gsi_domain_token); + int irq = irq_find_mapping(d, gsi); irq_dispose_mapping(irq); } |