[PATCH] powerpc: Allow may_use_simd() to function as feature detection

[Shawn Landden]

ARM does this, so we might as well too.
I am a bit confused however as CONFIG_ALTIVEC does not select
CONFIG_PPC_FPU. Would you ever have altivec without a fpu?

Signed-off-by: Shawn Landden <shawn at git.icu>
---
 arch/powerpc/include/asm/simd.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/powerpc/include/asm/simd.h b/arch/powerpc/include/asm/simd.h
index 9b066d633..2fe26f258 100644
--- a/arch/powerpc/include/asm/simd.h
+++ b/arch/powerpc/include/asm/simd.h
@@ -7,4 +7,11 @@
  * It's always ok in process context (ie "not interrupt")
  * but it is sometimes ok even from an irq.
  */
+#ifdef CONFIG_PPC_FPU
 extern bool may_use_simd(void);
+#else
+static inline bool may_use_simd(void)
+{
+	return false;
+}
+#endif
-- 
2.21.0.1020.gf2820cf01a