[PATCH] arm64: skip cpu nodes marked as disabled in DT

[Rohit Khanna]

Skip the CPU nodes that are marked as disabled in DT.

Bug 1828570

Signed-off-by: Rohit Khanna <rokhanna@xxxxxxxxxx>
Reviewed-on: http://git-master/r/1245333
Reviewed-by: Alexander Van Brunt <avanbrunt@xxxxxxxxxx>
---
 arch/arm64/kernel/smp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index f3e2e3aec0b0..2b4371b0948d 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -578,6 +578,10 @@ static void __init of_parse_and_init_cpus(void)
 	for_each_node_by_type(dn, "cpu") {
 		u64 hwid = of_get_cpu_mpidr(dn);
 
+		/* Check to see if the cpu is disabled */
+		if (!of_device_is_available(dn))
+			goto next;
+
 		if (hwid == INVALID_HWID)
 			goto next;
 
-- 
2.1.4