diff --git a/include/asm-ia64/sn/nodepda.h b/include/asm-ia64/sn/nodepda.h
index 47bb8100fd00e93a972511f7612a6999e92badfb..6f6d69e39ff59075af1637eb986ae1aefb855bc9 100644
--- a/include/asm-ia64/sn/nodepda.h
+++ b/include/asm-ia64/sn/nodepda.h
@@ -55,7 +55,6 @@ struct nodepda_s {
 	 */
 	struct phys_cpuid	phys_cpuid[NR_CPUS];
 	spinlock_t		ptc_lock ____cacheline_aligned_in_smp;
-	spinlock_t		bist_lock;
 };
 
 typedef struct nodepda_s nodepda_t;
diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index fea35b33d4e485f835cbfd678121f053f4a925f2..33aa4043f87db1f8661265e030417dfb3b91de06 100644
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -694,12 +694,10 @@ sn_change_memprotect(u64 paddr, u64 len, u64 perms, u64 *nasid_array)
 	unsigned long irq_flags;
 
 	cnodeid = nasid_to_cnodeid(get_node_number(paddr));
-	// spin_lock(&NODEPDA(cnodeid)->bist_lock);
 	local_irq_save(irq_flags);
 	ia64_sal_oemcall_nolock(&ret_stuff, SN_SAL_MEMPROTECT, paddr, len,
 				(u64)nasid_array, perms, 0, 0, 0);
 	local_irq_restore(irq_flags);
-	// spin_unlock(&NODEPDA(cnodeid)->bist_lock);
 	return ret_stuff.status;
 }
 #define SN_MEMPROT_ACCESS_CLASS_0		0x14a080