x86: fix typo in step.c

TIF_DEBUGCTLMSR has no meaning in the actual MSR...

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
index 2ef1a5f8d675..9d406cdc847f 100644
--- a/arch/x86/kernel/step.c
+++ b/arch/x86/kernel/step.c
@@ -166,7 +166,7 @@ static void enable_step(struct task_struct *child, bool block)
                                   child->thread.debugctlmsr | DEBUGCTLMSR_BTF);
         } else {
             write_debugctlmsr(child,
-                              child->thread.debugctlmsr & ~TIF_DEBUGCTLMSR);
+                              child->thread.debugctlmsr & ~DEBUGCTLMSR_BTF);
 
             if (!child->thread.debugctlmsr)
                     clear_tsk_thread_flag(child, TIF_DEBUGCTLMSR);
@@ -189,7 +189,7 @@ void user_disable_single_step(struct task_struct *child)
          * Make sure block stepping (BTF) is disabled.
          */
         write_debugctlmsr(child,
-                          child->thread.debugctlmsr & ~TIF_DEBUGCTLMSR);
+                          child->thread.debugctlmsr & ~DEBUGCTLMSR_BTF);
 
         if (!child->thread.debugctlmsr)
                 clear_tsk_thread_flag(child, TIF_DEBUGCTLMSR);