[POWERPC] Move lowlevel runlatch calls under cpu feature control
There's no need to call the runlatch on functions on processors that
don't implement them (CPU_FTR_CTRL).
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 33c4e8c..cec5908 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -656,7 +656,9 @@
FINISH_NAP
hardware_interrupt_entry:
DISABLE_INTS
+BEGIN_FTR_SECTION
bl .ppc64_runlatch_on
+END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
addi r3,r1,STACK_FRAME_OVERHEAD
bl .do_IRQ
b .ret_from_except_lite
diff --git a/include/asm-powerpc/exception.h b/include/asm-powerpc/exception.h
index d850c8e..39abdb0 100644
--- a/include/asm-powerpc/exception.h
+++ b/include/asm-powerpc/exception.h
@@ -282,7 +282,9 @@
EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
FINISH_NAP; \
DISABLE_INTS; \
+BEGIN_FTR_SECTION \
bl .ppc64_runlatch_on; \
+END_FTR_SECTION_IFSET(CPU_FTR_CTRL) \
addi r3,r1,STACK_FRAME_OVERHEAD; \
bl hdlr; \
b .ret_from_except_lite