1 files changed, 6 insertions, 7 deletions

diff --git a/arch/cris/arch-v32/kernel/ptrace.c b/arch/cris/arch-v32/kernel/ptrace.c
index 3e058a121753..511ece94a574 100644
--- a/arch/cris/arch-v32/kernel/ptrace.c
+++ b/arch/cris/arch-v32/kernel/ptrace.c
@@ -130,6 +130,7 @@ long arch_ptrace(struct task_struct *child, long request,
                  unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned int regno = addr >> 2;
         unsigned long __user *datap = (unsigned long __user *)data;
 
         switch (request) {
@@ -164,10 +165,10 @@ long arch_ptrace(struct task_struct *child, long request,
                         unsigned long tmp;
 
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        tmp = get_reg(child, addr >> 2);
+                        tmp = get_reg(child, regno);
                         ret = put_user(tmp, datap);
                         break;
                 }
@@ -181,19 +182,17 @@ long arch_ptrace(struct task_struct *child, long request,
                 /* Write the word at location address in the USER area. */
                 case PTRACE_POKEUSR:
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        addr >>= 2;
-
-                        if (addr == PT_CCS) {
+                        if (regno == PT_CCS) {
                                 /* don't allow the tracing process to change stuff like
                                  * interrupt enable, kernel/user bit, dma enables etc.
                                  */
                                 data &= CCS_MASK;
                                 data |= get_reg(child, PT_CCS) & ~CCS_MASK;
                         }
-                        if (put_reg(child, addr, data))
+                        if (put_reg(child, regno, data))
                                 break;
                         ret = 0;
                         break;