From mboxrd@z Thu Jan 1 00:00:00 1970 From: hanjun.guo@linaro.org (Hanjun Guo) Date: Fri, 12 Sep 2014 22:00:05 +0800 Subject: [PATCH v4 07/18] ARM64 / ACPI: If we chose to boot from acpi then disable FDT In-Reply-To: <1410530416-30200-1-git-send-email-hanjun.guo@linaro.org> References: <1410530416-30200-1-git-send-email-hanjun.guo@linaro.org> Message-ID: <1410530416-30200-8-git-send-email-hanjun.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Graeme Gregory 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 Signed-off-by: Hanjun Guo --- 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