[PATCH 17/19] ARM64 / ACPI: If we chose to boot from acpi then disable FDT

Hanjun Guo
2014-07-24T13:00:23Z

From: Graeme Gregory <graeme.gregory@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.gregory@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
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 17ab98e..4ace77c 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -397,8 +397,8 @@ void __init setup_arch(char **cmdline_p)
/* Get the boot CPU's MPIDR before cpu logical map is built */
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