[PATCH] powerpc: define empty enable_kernel_vsx() when CONFIG_VSX=n

[tim.gardner@canonical.com]

From: Tim Gardner <tim.gardner@canonical.com>

commit 72cd7b44bc99 ("powerpc: Uncomment and make enable_kernel_vsx()
routine available") neglected to define an empty inline replacement for
enable_kernel_vsx() when CONFIG_VSX=n.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---
 arch/powerpc/include/asm/switch_to.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
index 15cca17..dea61a0 100644
--- a/arch/powerpc/include/asm/switch_to.h
+++ b/arch/powerpc/include/asm/switch_to.h
@@ -29,7 +29,6 @@ static inline void save_early_sprs(struct thread_struct *prev) {}
 
 extern void enable_kernel_fp(void);
 extern void enable_kernel_altivec(void);
-extern void enable_kernel_vsx(void);
 extern int emulate_altivec(struct pt_regs *);
 extern void __giveup_vsx(struct task_struct *);
 extern void giveup_vsx(struct task_struct *);
@@ -69,10 +68,14 @@ static inline void giveup_altivec(struct task_struct *t)
 
 #ifdef CONFIG_VSX
 extern void flush_vsx_to_thread(struct task_struct *);
+extern void enable_kernel_vsx(void);
 #else
 static inline void flush_vsx_to_thread(struct task_struct *t)
 {
 }
+static inline void enable_kernel_vsx(void)
+{
+}
 #endif
 
 #ifdef CONFIG_SPE
-- 
1.9.1