linux-kernel - [PATCH v4 12/13] ARM64 / ACPI: if we chose to boot from acpi then disable FDT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1403840976-7456-13-git-send-email-hanjun.guo@linaro.org>
Date:	Fri, 27 Jun 2014 11:49:35 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>, rric@...nel.org,
	Grant Likely <grant.likely@...aro.org>,
	Sudeep Holla <Sudeep.Holla@....com>,
	Mark Rutland <mark.rutland@....com>,
	Charles.Garcia-Tobin@....com, lorenzo.pieralisi@....com,
	linaro-acpi@...ts.linaro.org,
	Graeme Gregory <graeme.gregory@...aro.org>
Subject: [PATCH v4 12/13] ARM64 / ACPI: if we chose to boot from acpi then disable FDT

From: Graeme Gregory <graeme.gregory@...aro.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@...aro.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 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();
 
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/