MIPS: microMIPS: Disable LL/SC and fix linker bug.

Partially revert commit e0c14a260d66ba35935600d6435940a566fe806b
and turn off LL/SC when building a pure microMIPS kernel. This is
a temporary fix until the cmpxchg assembly macro functions are
re-written to not use the HI/LO registers in address calculations.

Also add .insn in selected user access functions which would
otherwise produce ISA mode jump incompatibilities. This is also a
temporary fix.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
index 193c0912d38e..bfbd7035d4c5 100644
--- a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
@@ -28,7 +28,11 @@
 /* #define cpu_has_prefetch     ? */
 #define cpu_has_mcheck          1
 /* #define cpu_has_ejtag        ? */
+#ifdef CONFIG_CPU_MICROMIPS
+#define cpu_has_llsc            0
+#else
 #define cpu_has_llsc            1
+#endif
 /* #define cpu_has_vtag_icache  ? */
 /* #define cpu_has_dc_aliases   ? */
 /* #define cpu_has_ic_fills_f_dc ? */