powerpc/math-emu: Remove the dead code in math.c

The math.c is only built when CONFIG_MATH_EMULATION is enabled.
So we would never get into the case that CONFIG_MATH_EMULATION
is not defined in this file.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/math-emu/math.c b/arch/powerpc/math-emu/math.c
index 0328e66..cefb4f2 100644 (file)
--- a/arch/powerpc/math-emu/math.c
+++ b/arch/powerpc/math-emu/math.c
@@ -231,47 +231,6 @@ do_mathemu(struct pt_regs *regs)
        if (get_user(insn, (u32 *)pc))
                return -EFAULT;
 
-#ifndef CONFIG_MATH_EMULATION
-       switch (insn >> 26) {
-       case LFD:
-               idx = (insn >> 16) & 0x1f;
-               sdisp = (insn & 0xffff);
-               op0 = (void *)&current->thread.TS_FPR((insn >> 21) & 0x1f);
-               op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
-               lfd(op0, op1, op2, op3);
-               break;
-       case LFDU:
-               idx = (insn >> 16) & 0x1f;
-               sdisp = (insn & 0xffff);
-               op0 = (void *)&current->thread.TS_FPR((insn >> 21) & 0x1f);
-               op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
-               lfd(op0, op1, op2, op3);
-               regs->gpr[idx] = (unsigned long)op1;
-               break;
-       case STFD:
-               idx = (insn >> 16) & 0x1f;
-               sdisp = (insn & 0xffff);
-               op0 = (void *)&current->thread.TS_FPR((insn >> 21) & 0x1f);
-               op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
-               stfd(op0, op1, op2, op3);
-               break;
-       case STFDU:
-               idx = (insn >> 16) & 0x1f;
-               sdisp = (insn & 0xffff);
-               op0 = (void *)&current->thread.TS_FPR((insn >> 21) & 0x1f);
-               op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
-               stfd(op0, op1, op2, op3);
-               regs->gpr[idx] = (unsigned long)op1;
-               break;
-       case OP63:
-               op0 = (void *)&current->thread.TS_FPR((insn >> 21) & 0x1f);
-               op1 = (void *)&current->thread.TS_FPR((insn >> 11) & 0x1f);
-               fmr(op0, op1, op2, op3);
-               break;
-       default:
-               goto illegal;
-       }
-#else /* CONFIG_MATH_EMULATION */
        switch (insn >> 26) {
        case LFS:       func = lfs;     type = D;       break;
        case LFSU:      func = lfs;     type = DU;      break;
@@ -485,7 +444,6 @@ do_mathemu(struct pt_regs *regs)
        default:
                break;
        }
-#endif /* CONFIG_MATH_EMULATION */
 
        regs->nip += 4;
        return 0;