Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus...

[linux-2.6-omap-h63xx.git] / arch / ia64 / kernel / ptrace.c

diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 3f8918782e0c992721a1758c1f83e2446f5261fe..2e96f17b2f3b9e2c0b905deddcc02df21c88517d 100644 (file)
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -951,10 +951,14 @@ access_uarea (struct task_struct *child, unsigned long addr,
                        return 0;
 
                      case PT_CR_IPSR:
-                       if (write_access)
-                               pt->cr_ipsr = ((*data & IPSR_MASK)
+                       if (write_access) {
+                               unsigned long tmp = *data;
+                               /* psr.ri==3 is a reserved value: SDM 2:25 */
+                               if ((tmp & IA64_PSR_RI) == IA64_PSR_RI)
+                                       tmp &= ~IA64_PSR_RI;
+                               pt->cr_ipsr = ((tmp & IPSR_MASK)
                                               | (pt->cr_ipsr & ~IPSR_MASK));
-                       else
+                       } else
                                *data = (pt->cr_ipsr & IPSR_MASK);
                        return 0;