[PATCH 7/8] m68k: only generate FPU instructions of CONFIG_FPU

Greg Ungerer
2016-08-29T11:42:21Z

Most of the m68k code that supports a hardware FPU is surrounded by
CONFIG_FPU. Except this setup code in setup_mm.c. Be consistent and
surround these hardware FPU instructions with CONFIG_FPU instead of
a check based on CONFIG_M68KFPU_EMU_ONLY.

The side effect of this is that we can now compile a kernel with no
m68k/ColdFire hardware support FPU instructions at all (if we do not
define CONFIG_FPU).

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
---
arch/m68k/kernel/setup_mm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 13f4640..00290c4 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -245,7 +245,7 @@ void __init setup_arch(char **cmdline_p)
* We should really do our own FPU check at startup.
* [what do we do with buggy 68LC040s? if we have problems
* with them, we should add a test to check_bugs() below] */
-#ifndef CONFIG_M68KFPU_EMU_ONLY
+#ifdef CONFIG_FPU
/* clear the fpu if we have one */
if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
volatile int zero = 0;
--
1.9.1