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, 6 deletions

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 9a5d9754c2a2..78c9f1a3d41f 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -677,12 +677,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                  */
                 case PTRACE_POKETEXT:
                 case PTRACE_POKEDATA:
-                        ret = access_process_vm(child, addr, &data,
-                                                sizeof(unsigned long), 1);
-                        if (ret == sizeof(unsigned long))
-                                ret = 0;
-                        else
-                                ret = -EIO;
+                        ret = generic_ptrace_pokedata(child, addr, data);
                         break;
 
                 case PTRACE_POKEUSR: