[MIPS] Fix pipeline hazard.

In the the sequence:
        ei
        ..
        mfc0    $x, $status

the mfc0 may not see the SR_IE bit set. This was a deliberate bug in the
kernel code because we knew this was a safe thing to do on all R2 silicon
so far but new silicon is changing this.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h
index 5007315..e50c77e 100644 (file)
--- a/include/asm-mips/hazards.h
+++ b/include/asm-mips/hazards.h
@@ -52,6 +52,7 @@ ASMMACRO(tlb_probe_hazard,
         _ehb
        )
 ASMMACRO(irq_enable_hazard,
+        _ehb
        )
 ASMMACRO(irq_disable_hazard,
        _ehb