PTRACE_PEEKDATA consolidation

Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()
function.

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>
diff --git a/arch/v850/kernel/ptrace.c b/arch/v850/kernel/ptrace.c
index a9b0934..3bedd14 100644
--- a/arch/v850/kernel/ptrace.c
+++ b/arch/v850/kernel/ptrace.c
@@ -117,15 +117,11 @@
 	int rval;
 
 	switch (request) {
-		unsigned long val, copied;
+		unsigned long val;
 
 	case PTRACE_PEEKTEXT: /* read word at location addr. */
 	case PTRACE_PEEKDATA:
-		copied = access_process_vm(child, addr, &val, sizeof(val), 0);
-		rval = -EIO;
-		if (copied != sizeof(val))
-			break;
-		rval = put_user(val, (unsigned long *)data);
+		rval = generic_ptrace_peekdata(child, addr, data);
 		goto out;
 
 	case PTRACE_POKETEXT: /* write the word at location addr. */