MIPS: Override assembler target architecture for octeon.

Gas from binutils 2.19 fails to compile some cop1 instructions with
-march=octeon.  Since the cop1 instructions are present in mips1, use
that arch instead.  This will be fixed in binutils 2.20.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index 757d48f0d80f..fb6f73148df2 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -385,10 +385,14 @@ NESTED(nmi_handler, PT_SIZE, sp)
         .endm
 
         .macro  __build_clear_fpe
+        .set    push
+        /* gas fails to assemble cfc1 for some archs (octeon).*/ \
+        .set    mips1
         cfc1    a1, fcr31
         li      a2, ~(0x3f << 12)
         and     a2, a1
         ctc1    a2, fcr31
+        .set    pop
         TRACE_IRQS_ON
         STI
         .endm