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, 3 deletions

diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 0cd060598f9a..83a781842266 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -315,9 +315,7 @@ do_sys_ptrace(long request, long pid, 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:
-                tmp = data;
-                copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 1);
-                ret = (copied == sizeof(tmp)) ? 0 : -EIO;
+                ret = generic_ptrace_pokedata(child, addr, data);
                 break;
 
         case PTRACE_POKEUSR: /* write the specified register */