powerpc: Do not call prink when CONFIG_PRINTK is not defined

When printk() is disabled (CONFIG_PRINTK) at menu item
 General setup
 -> Configure standard kernel features (for small systems)
    -> Enable support for printk
then there should be no printk() calls at all.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index a7cf4934342c..725526547994 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -884,13 +884,17 @@ KernelSPE:
         lwz     r3,_MSR(r1)
         oris    r3,r3,MSR_SPE@h
         stw     r3,_MSR(r1)     /* enable use of SPE after return */
+#ifdef CONFIG_PRINTK
         lis     r3,87f@h
         ori     r3,r3,87f@l
         mr      r4,r2           /* current */
         lwz     r5,_NIP(r1)
         bl      printk
+#endif
         b       ret_from_except
+#ifdef CONFIG_PRINTK
 87:     .string "SPE used in kernel  (task=%p, pc=%x)  \n"
+#endif
         .align  4,0
 
 #endif /* CONFIG_SPE */