PTRACE_POKEDATA consolidation

Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata()
function.

AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless
return EPERM.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 5 deletions

diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 1966da6eb363..6916c8888dba 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -64,11 +64,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         /* when I and D space are separate, this will have to be fixed. */
         case PTRACE_POKETEXT: /* write the word at location addr. */
         case PTRACE_POKEDATA:
-                ret = -EIO;
-                if (access_process_vm(child, addr, &data, sizeof(data), 
-                                      1) != sizeof(data))
-                        break;
-                ret = 0;
+                ret = generic_ptrace_pokedata(child, addr, data);
                 break;
 
         case PTRACE_POKEUSR: /* write the word at location addr in the USER area */