[PATCH v2 16/18] ARM64 / ACPI: If we chose to boot from acpi then disable FDT
From: Hanjun Guo
Date: Mon Aug 04 2014 - 11:31:51 EST
From: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
If the early boot methods of acpi are happy that we have valid ACPI
tables and acpi=on has been passed. Then do not unflat devicetree
effectively disabling further hardware probing from DT.
Signed-off-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
---
arch/arm64/kernel/setup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 056e2e1..0742e8c 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -399,8 +399,8 @@ void __init setup_arch(char **cmdline_p)
cpu_logical_map(0) = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
acpi_boot_init();
-
- unflatten_device_tree();
+ if (acpi_disabled)
+ unflatten_device_tree();
psci_init();
--
1.7.9.5
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