[PATCH] ARM: kernel: respect device tree status of cpu nodes

[Jürg Billeter]

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 at bitron.ch>
Reviewed-by: Ben Dooks <ben.dooks at 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