diff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c
index c9a889880214e..d488311efab1f 100644
--- a/arch/powerpc/kexec/crash.c
+++ b/arch/powerpc/kexec/crash.c
@@ -311,9 +311,6 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	unsigned int i;
 	int (*old_handler)(struct pt_regs *regs);
 
-	/* Avoid hardlocking with irresponsive CPU holding logbuf_lock */
-	printk_nmi_enter();
-
 	/*
 	 * This function is only called after the system
 	 * has panicked or is otherwise in a critical state.
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 8b74ff17b2eef..ee7008c436ca1 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1981,12 +1981,6 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 }
 EXPORT_SYMBOL(vprintk);
 
-int vprintk_default(const char *fmt, va_list args)
-{
-	return vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
-}
-EXPORT_SYMBOL_GPL(vprintk_default);
-
 /**
  * printk - print a kernel message
  * @fmt: format string
@@ -2784,7 +2778,7 @@ static int __init init_printk_kthread(void)
 }
 late_initcall(init_printk_kthread);
 
-static int vprintk_deferred(const char *fmt, va_list args)
+__printf(1, 0) static int vprintk_deferred(const char *fmt, va_list args)
 {
 	return vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
 }
diff --git a/localversion-rt b/localversion-rt
index 05c35cb580779..6e44e540b927b 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt11
+-rt12
