1 files changed, 2 insertions, 1 deletions

diff --git a/arch/v850/kernel/ptrace.c b/arch/v850/kernel/ptrace.c
index 8fa780757dcd..4726b87f5e5a 100644
--- a/arch/v850/kernel/ptrace.c
+++ b/arch/v850/kernel/ptrace.c
@@ -23,6 +23,7 @@
 #include <linux/sched.h>
 #include <linux/smp_lock.h>
 #include <linux/ptrace.h>
+#include <linux/signal.h>
 
 #include <asm/errno.h>
 #include <asm/ptrace.h>
@@ -208,7 +209,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
         /* Execute a single instruction. */
         case PTRACE_SINGLESTEP:
                 rval = -EIO;
-                if ((unsigned long) data > _NSIG)
+                if (!valid_signal(data))
                         break;
 
                 /* Turn CHILD's single-step flag on or off.  */