1 files changed, 1 insertions, 0 deletions

diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index ed77715393ef..6648deb778a6 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -403,6 +403,7 @@ static void __init sn_init_pdas(char **cmdline_p)
                 memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
                 memset(nodepdaindr[cnode]->phys_cpuid, -1,
                     sizeof(nodepdaindr[cnode]->phys_cpuid));
+                spin_lock_init(&nodepdaindr[cnode]->ptc_lock);
         }
 
         /*