Generate SIGILL again

[Daniel Jacobowitz <dan@debian.org>]

The rdhwr emulation accidentally swallowed the SIGILL from most other
illegal instructions.  Make sure to return -EFAULT by default.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 7f60f61..63db2fa 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -534,13 +534,14 @@ static inline int simulate_rdhwr(struct 
                switch (rd) {
                        case 29:
                                regs->regs[rt] = ti->tp_value;
-                               break;
+                               return 0;
                        default:
                                return -EFAULT;
                }
        }
 
-       return 0;
+       /* Not ours.  */
+       return -EFAULT;
 }
 
 asmlinkage void do_ov(struct pt_regs *regs)

-- 
Daniel Jacobowitz
CodeSourcery, LLC