ACPI: regression: Failed to initialize GIC IRQ controller

[Ming Lei]

Hi,

Commit 0cff8dc0099f6d4f(ACPICA: ACPI 6.0: Add changes for MADT table.)
causes the following failure on APM mustang board(arm64) when
booting via UEFI and ACPI:

No valid GICC entries exist
ACPI: Failed to initialize GIC IRQ controller
Kernel panic - not syncing: No interrupt controller found.
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.2.0-rc1+ #45
Hardware name: APM X-Gene Mustang board (DT)
Call trace:
[<ffffffc000089b94>] dump_backtrace+0x0/0x12c
[<ffffffc000089cd0>] show_stack+0x10/0x1c
[<ffffffc0005fac18>] dump_stack+0x8c/0xdc
[<ffffffc0005f7218>] panic+0xe4/0x220
[<ffffffc00082631c>] init_IRQ+0x24/0x30
[<ffffffc00082486c>] start_kernel+0x274/0x3d8
---[ end Kernel panic - not syncing: No interrupt controller found.


Thanks,
Ming
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