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ACPI: irq: Fix incorrect return value in acpi_register_gsi() 

commit 0c21a18d5d upstream.

acpi_register_gsi() should return a negative value in case of failure.

Currently, it returns the return value from irq_create_fwspec_mapping().
However, irq_create_fwspec_mapping() returns 0 for failure. Fix the
issue by returning -EINVAL if irq_create_fwspec_mapping() returns zero.

Fixes: d44fa3d460 ("ACPI: Add support for ResourceSource/IRQ domain mapping")
Cc: 4.11+ <stable@vger.kernel.org> # 4.11+
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
[ rjw: Rename a new local variable ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sunil V L 2023-10-16 22:39:39 +05:30 committed by Greg Kroah-Hartman
parent c462bf4ef8
commit 8d69b47443
1 changed files with 6 additions and 1 deletions
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7
drivers/acpi/irq.c
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@ -57,6 +57,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
int polarity)
{
struct irq_fwspec fwspec;
unsigned int irq;
fwspec.fwnode = acpi_get_gsi_domain_id(gsi);
if (WARN_ON(!fwspec.fwnode)) {
@ -68,7 +69,11 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
fwspec.param_count = 2;
return irq_create_fwspec_mapping(&fwspec);
irq = irq_create_fwspec_mapping(&fwspec);
if (!irq)
return -EINVAL;
return irq;
}
EXPORT_SYMBOL_GPL(acpi_register_gsi);