MIPS: ftrace: Fix a microMIPS build problem

Code before the .fixup section needs to have the .insn directive.
This has no side effects on MIPS32/64 but it affects the way microMIPS
loads the address for the return label.

Fixes the following build problem:
mips-linux-gnu-ld: arch/mips/built-in.o: .fixup+0x4a0: Unsupported jump between
ISA modes; consider recompiling with interlinking enabled.
mips-linux-gnu-ld: final link failed: Bad value
Makefile:819: recipe for target 'vmlinux' failed

The fix is similar to 1658f914ff91c3bf ("MIPS: microMIPS:
Disable LL/SC and fix linker bug.")

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8117/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h
index 992aaba603b5..b463f2aa5a61 100644
--- a/arch/mips/include/asm/ftrace.h
+++ b/arch/mips/include/asm/ftrace.h
@@ -24,7 +24,7 @@ do {							\
         asm volatile (                                  \
                 "1: " load " %[tmp_dst], 0(%[tmp_src])\n"       \
                 "   li %[tmp_err], 0\n"                 \
-                "2:\n"                                  \
+                "2: .insn\n"                            \
                                                         \
                 ".section .fixup, \"ax\"\n"             \
                 "3: li %[tmp_err], 1\n"                 \
@@ -46,7 +46,7 @@ do {						\
         asm volatile (                          \
                 "1: " store " %[tmp_src], 0(%[tmp_dst])\n"\
                 "   li %[tmp_err], 0\n"         \
-                "2:\n"                          \
+                "2: .insn\n"                    \
                                                 \
                 ".section .fixup, \"ax\"\n"     \
                 "3: li %[tmp_err], 1\n"         \