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Subject[PATCH] ARM: kernel: respect device tree status of cpu nodes
Date
Skip 'disabled' cpu nodes when building the cpu logical map. This avoids
booting cpus that have been disabled in the device tree.

Signed-off-by: Jürg Billeter <j@bitron.ch>
Reviewed-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
arch/arm/kernel/devtree.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 739c3df..9aed299 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -95,6 +95,10 @@ void __init arm_dt_init_cpu_maps(void)
if (of_node_cmp(cpu->type, "cpu"))
continue;

+ /* Check if CPU is enabled */
+ if (!of_device_is_available(cpu))
+ continue;
+
pr_debug(" * %s...\n", cpu->full_name);
/*
* A device tree containing CPU nodes with missing "reg"
--
1.9.0
--
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