x86: ds.c ptrace.c integer as NULL pointer sparse fixes

fix:

 arch/x86/kernel/ptrace.c:763:29: warning: Using plain integer as NULL pointer
 arch/x86/kernel/ptrace.c:777:46: warning: Using plain integer as NULL pointer
 arch/x86/kernel/ptrace.c:1115:45: warning: Using plain integer as NULL pointer
 arch/x86/kernel/ds.c:482:26: warning: Using plain integer as NULL pointer
 arch/x86/kernel/ds.c:487:25: warning: Using plain integer as NULL pointer

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

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index ba19bb49bd0..5df6093ac77 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -734,7 +734,7 @@ static int ptrace_bts_config(struct task_struct *child,
                 goto errout;
 
         if (cfg.flags & PTRACE_BTS_O_ALLOC) {
-                ds_ovfl_callback_t ovfl = 0;
+                ds_ovfl_callback_t ovfl = NULL;
                 unsigned int sig = 0;
 
                 /* we ignore the error in case we were not tracing child */
@@ -748,7 +748,7 @@ static int ptrace_bts_config(struct task_struct *child,
                         ovfl = ptrace_bts_ovfl;
                 }
 
-                error = ds_request_bts(child, /* base = */ 0, cfg.size, ovfl);
+                error = ds_request_bts(child, /* base = */ NULL, cfg.size, ovfl);
                 if (error < 0)
                         goto errout;
 
@@ -1086,7 +1086,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_BTS_SIZE:
-                ret = ds_get_bts_index(child, /* pos = */ 0);
+                ret = ds_get_bts_index(child, /* pos = */ NULL);
                 break;
 
         case PTRACE_BTS_GET: