1 files changed, 18 insertions, 12 deletions

diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 450931a45b68..573bc29551ef 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -296,13 +296,6 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
                      ((data & PSW_MASK_EA) && !(data & PSW_MASK_BA))))
                         /* Invalid psw mask. */
                         return -EINVAL;
-                if (addr == (addr_t) &dummy->regs.psw.addr)
-                        /*
-                         * The debugger changed the instruction address,
-                         * reset system call restart, see signal.c:do_signal
-                         */
-                        task_thread_info(child)->system_call = 0;
-
                 *(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr) = data;
 
         } else if (addr < (addr_t) (&dummy->regs.orig_gpr2)) {
@@ -614,11 +607,6 @@ static int __poke_user_compat(struct task_struct *child,
                         /* Transfer 31 bit amode bit to psw mask. */
                         regs->psw.mask = (regs->psw.mask & ~PSW_MASK_BA) |
                                 (__u64)(tmp & PSW32_ADDR_AMODE);
-                        /*
-                         * The debugger changed the instruction address,
-                         * reset system call restart, see signal.c:do_signal
-                         */
-                        task_thread_info(child)->system_call = 0;
                 } else {
                         /* gpr 0-15 */
                         *(__u32*)((addr_t) &regs->psw + addr*2 + 4) = tmp;
@@ -905,6 +893,14 @@ static int s390_last_break_get(struct task_struct *target,
         return 0;
 }
 
+static int s390_last_break_set(struct task_struct *target,
+                               const struct user_regset *regset,
+                               unsigned int pos, unsigned int count,
+                               const void *kbuf, const void __user *ubuf)
+{
+        return 0;
+}
+
 #endif
 
 static int s390_system_call_get(struct task_struct *target,
@@ -951,6 +947,7 @@ static const struct user_regset s390_regsets[] = {
                 .size = sizeof(long),
                 .align = sizeof(long),
                 .get = s390_last_break_get,
+                .set = s390_last_break_set,
         },
 #endif
         [REGSET_SYSTEM_CALL] = {
@@ -1116,6 +1113,14 @@ static int s390_compat_last_break_get(struct task_struct *target,
         return 0;
 }
 
+static int s390_compat_last_break_set(struct task_struct *target,
+                                      const struct user_regset *regset,
+                                      unsigned int pos, unsigned int count,
+                                      const void *kbuf, const void __user *ubuf)
+{
+        return 0;
+}
+
 static const struct user_regset s390_compat_regsets[] = {
         [REGSET_GENERAL] = {
                 .core_note_type = NT_PRSTATUS,
@@ -1139,6 +1144,7 @@ static const struct user_regset s390_compat_regsets[] = {
                 .size = sizeof(long),
                 .align = sizeof(long),
                 .get = s390_compat_last_break_get,
+                .set = s390_compat_last_break_set,
         },
         [REGSET_SYSTEM_CALL] = {
                 .core_note_type = NT_S390_SYSTEM_CALL,