[MIPS] Generate SIGILL again

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

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 6f3ff96..7058893 100644 (file)
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -534,13 +534,14 @@ static inline int simulate_rdhwr(struct pt_regs *regs)
                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)