From: Graeme Gregory <graeme.greg...@linaro.org>
If the early boot methods of acpi are happy that we have valid ACPI
tables and acpi=off has not been passed. Then do not unflat
devicetree effectively disabling further hardware probing from DT.
Signed-off-by: Graeme Gregory <graeme.greg...@linaro.org>
Signed-off-by: Hanjun Guo <hanjun....@linaro.org>
---
arch/arm64/kernel/setup.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 5b05227..5796734 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -398,7 +398,8 @@ void __init setup_arch(char **cmdline_p)
efi_idmap_init();
cpu_logical_map(0) = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
- unflatten_device_tree();
+ if (acpi_disabled)
+ unflatten_device_tree();
psci_init();
--
1.7.9.5
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