diff options
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 392360c607d..298f79616f1 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -97,6 +97,8 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; +#define ACPI_INVALID_GSI INT_MIN + static unsigned int gsi_to_irq(unsigned int gsi) { unsigned int irq = gsi + NR_IRQS_LEGACY; @@ -441,7 +443,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, polarity == ACPI_ACTIVE_HIGH ? 0 : 1); ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); if (ret < 0) - gsi = INT_MIN; + gsi = ACPI_INVALID_GSI; return gsi; } @@ -666,13 +668,13 @@ int (*acpi_suspend_lowlevel)(void); */ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { - unsigned int irq; - unsigned int plat_gsi = gsi; + unsigned int plat_gsi; - plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); - irq = gsi_to_irq(plat_gsi); + plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); + if (plat_gsi != ACPI_INVALID_GSI) + return gsi_to_irq(plat_gsi); - return irq; + return -1; } EXPORT_SYMBOL_GPL(acpi_register_gsi); |