MIPS: math-emu: Allow m{f,t}hc emulation on MIPS R6

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

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10737/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index cd858953a78374b2d46f92201cb6ae55c32444ab..e78b1ae6dcdb7d9917080ecd1544ea1ded4fe8a7 100644 (file)
--- 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] */