[S390] ptrace: use common code for simple peek/poke operations

arch_ptrace on s390 implements PTRACE_(PEEK|POKE)(TEXT|DATA) instead of
using using ptrace_request in kernel/ptrace.c.
The only reason is the 31bit addressing mode, where we have to unmask the
highest bit.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 15 deletions

diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index f3ddd7ac06c5..a8738676b26c 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -339,24 +339,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         int copied, ret;
 
         switch (request) {
-        case PTRACE_PEEKTEXT:
-        case PTRACE_PEEKDATA:
-                /* Remove high order bit from address (only for 31 bit). */
-                addr &= PSW_ADDR_INSN;
-                /* read word at location addr. */
-                return generic_ptrace_peekdata(child, addr, data);
-
         case PTRACE_PEEKUSR:
                 /* read the word at location addr in the USER area. */
                 return peek_user(child, addr, data);
 
-        case PTRACE_POKETEXT:
-        case PTRACE_POKEDATA:
-                /* Remove high order bit from address (only for 31 bit). */
-                addr &= PSW_ADDR_INSN;
-                /* write the word at location addr. */
-                return generic_ptrace_pokedata(child, addr, data);
-
         case PTRACE_POKEUSR:
                 /* write the word at location addr in the USER area */
                 return poke_user(child, addr, data);
@@ -386,8 +372,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         copied += sizeof(unsigned long);
                 }
                 return 0;
+        default:
+                /* Removing high order bit from addr (only for 31 bit). */
+                addr &= PSW_ADDR_INSN;
+                return ptrace_request(child, request, addr, data);
         }
-        return ptrace_request(child, request, addr, data);
 }
 
 #ifdef CONFIG_COMPAT