x86: fix small sparse warning

arch/x86/kernel/ds.c:226:9: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 1c5ca4d18787..dcd918c1580d 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -223,7 +223,7 @@ int ds_free(void **dsp)
         if (*dsp)
                 kfree((void *)get_bts_buffer_base(*dsp));
         kfree(*dsp);
-        *dsp = 0;
+        *dsp = NULL;
 
         return 0;
 }