diff mbox

[v4,12/13] ARM64 / ACPI: if we chose to boot from acpi then disable FDT

Message ID 1403840976-7456-13-git-send-email-hanjun.guo@linaro.org
State New
Headers show

Commit Message

Hanjun Guo June 27, 2014, 3:49 a.m. UTC 
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>
---
 arch/arm64/kernel/setup.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Arnd Bergmann June 27, 2014, 9:09 a.m. UTC | #1 
On Friday 27 June 2014 11:49:35 Hanjun Guo wrote:
> 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.
> 

I guess this answers the question I had on patch 4 ;-)

	Arnd
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diff mbox

Patch

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 9dedb0b..487fd1f 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -394,7 +394,8 @@  void __init setup_arch(char **cmdline_p)
 
 	efi_idmap_init();
 
-	unflatten_device_tree();
+	if (acpi_disabled)
+		unflatten_device_tree();
 
 	psci_init();