diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index ae9ff72e83ee47..848fcdf6a11242 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -1297,6 +1297,10 @@ gic_acpi_parse_madt_gicc(struct acpi_subtable_header *header, u32 size = reg == GIC_PIDR2_ARCH_GICv4 ? SZ_64K * 4 : SZ_64K * 2; void __iomem *redist_base; + /* GICC entry which has !ACPI_MADT_ENABLED is not unusable so skip */ + if (!(gicc->flags & ACPI_MADT_ENABLED)) + return 0; + redist_base = ioremap(gicc->gicr_base_address, size); if (!redist_base) return -ENOMEM; @@ -1346,6 +1350,13 @@ static int __init gic_acpi_match_gicc(struct acpi_subtable_header *header, if ((gicc->flags & ACPI_MADT_ENABLED) && gicc->gicr_base_address) return 0; + /* + * It's perfectly valid firmware can pass disabled GICC entry, driver + * should not treat as errors, skip the entry instead of probe fail. + */ + if (!(gicc->flags & ACPI_MADT_ENABLED)) + return 0; + return -ENODEV; }