4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Markos Chandras <markos.chand...@imgtec.com>

commit e8f80cc1a6d80587136b015e989a12827e1fcfe5 upstream.

The mfhc/mthc instructions are supported on MIPS R6 so emulate
them if needed.

Signed-off-by: Markos Chandras <markos.chand...@imgtec.com>
Cc: linux-m...@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10737/
Signed-off-by: Ralf Baechle <r...@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 arch/mips/math-emu/cp1emu.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -1137,7 +1137,7 @@ emul:
                        break;
 
                case mfhc_op:
-                       if (!cpu_has_mips_r2)
+                       if (!cpu_has_mips_r2_r6)
                                goto sigill;
 
                        /* copregister rd -> gpr[rt] */
@@ -1148,7 +1148,7 @@ emul:
                        break;
 
                case mthc_op:
-                       if (!cpu_has_mips_r2)
+                       if (!cpu_has_mips_r2_r6)
                                goto sigill;
 
                        /* copregister rd <- gpr[rt] */


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