From 8543e6c96762fcc930af5725088c2b9e4865c3aa Mon Sep 17 00:00:00 2001
From: Michal Simek <michal.simek@xilinx.com>
Date: Thu, 18 Dec 2014 15:41:13 +0100
Subject: [PATCH] microblaze: Use unsigned return type in
 do_syscall_trace_enter

Registers are not signed types.

The patch removes warnings:
arch/microblaze/kernel/ptrace.c: In function 'do_syscall_trace_enter':
arch/microblaze/kernel/ptrace.c:152:14: warning: signed and unsigned
type in conditional expression [-Wsign-compare]
  return ret ?: regs->r12;

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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