[PATCH] ARM: Kirkwood: fix kirkwood_pm_init() declaration/type

The kirkwood-pm.c was missing the include of kirkwood-pm.h to
define the kirkwood_pm_init() function. However once this is
included, the types do not match.

Fixup the include, and then the prototype to avoid the following
warning:

arch/arm/mach-mvebu/kirkwood-pm.c:69:12: warning: symbol 'kirkwood_pm_init' was not declared. Should it be static?
Signed-off-by: Ben Dooks <redacted>
---
Cc: Jason Cooper <redacted>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <redacted>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: linux-arm-kernel at lists.infradead.org
---
 arch/arm/mach-mvebu/kirkwood-pm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-mvebu/kirkwood-pm.c b/arch/arm/mach-mvebu/kirkwood-pm.c
index cbb816f..1e1f879 100644
--- a/arch/arm/mach-mvebu/kirkwood-pm.c
+++ b/arch/arm/mach-mvebu/kirkwood-pm.c

@@ -18,6 +18,7 @@
 #include <linux/suspend.h>
 #include <linux/io.h>
 #include "kirkwood.h"
+#include "kirkwood-pm.h"
 
 static void __iomem *ddr_operation_base;
 static void __iomem *memory_pm_ctrl;

@@ -66,11 +67,10 @@ static const struct platform_suspend_ops kirkwood_suspend_ops = {
 	.valid = kirkwood_pm_valid_standby,
 };
 
-int __init kirkwood_pm_init(void)
+void __init kirkwood_pm_init(void)
 {
 	ddr_operation_base = ioremap(DDR_OPERATION_BASE, 4);
 	memory_pm_ctrl = ioremap(MEMORY_PM_CTRL_PHYS, 4);
 
 	suspend_set_ops(&kirkwood_suspend_ops);
-	return 0;
 }

-- 
2.8.1

On Thu, Jun 09, 2016 at 12:57:12PM +0100, Ben Dooks wrote:

The kirkwood-pm.c was missing the include of kirkwood-pm.h to
define the kirkwood_pm_init() function. However once this is
included, the types do not match.

Fixup the include, and then the prototype to avoid the following
warning:

arch/arm/mach-mvebu/kirkwood-pm.c:69:12: warning: symbol 'kirkwood_pm_init' was not declared. Should it be static?
Signed-off-by: Ben Dooks <redacted>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

On Thursday, June 9, 2016 12:57:12 PM CEST Ben Dooks wrote:

The kirkwood-pm.c was missing the include of kirkwood-pm.h to
define the kirkwood_pm_init() function. However once this is
included, the types do not match.

Fixup the include, and then the prototype to avoid the following
warning:

arch/arm/mach-mvebu/kirkwood-pm.c:69:12: warning: symbol 'kirkwood_pm_init' was not declared. Should it be static?
Signed-off-by: Ben Dooks <redacted>

You found another bug, when building with CONFIG_PM:

../arch/arm/mach-mvebu/kirkwood-pm.c:70:13: error: redefinition of 'kirkwood_pm_init'
 void __init kirkwood_pm_init(void)
             ^~~~~~~~~~~~~~~~
In file included from ../arch/arm/mach-mvebu/kirkwood-pm.c:21:0:
../arch/arm/mach-mvebu/kirkwood-pm.h:23:20: note: previous definition of 'kirkwood_pm_init' was here
 static inline void kirkwood_pm_init(void) {};

I guess we have to make the kirkwood-pm.c file conditional on CONFIG_PM too,
but I'm unsure whether we should do the same for pm.c and pm-board.c.

Would the patch below seem reasonable, or do we actually want to call
mvebu_armada_pm_init() when CONFIG_PM is disabled? Does the machine even
boot without CONFIG_PM?

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 568863e1513c..6c6497e80a7b 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile

@@ -6,9 +6,15 @@ CFLAGS_pmsu.o			:= -march=armv7-a
 obj-$(CONFIG_MACH_MVEBU_ANY)	 += system-controller.o mvebu-soc-id.o
 
 ifeq ($(CONFIG_MACH_MVEBU_V7),y)
-obj-y				 += cpu-reset.o board-v7.o coherency.o coherency_ll.o pmsu.o pmsu_ll.o pm.o pm-board.o
+obj-y				 += cpu-reset.o board-v7.o coherency.o coherency_ll.o pmsu.o pmsu_ll.o
+
+obj-$(CONFIG_PM)		 += pm.o pm-board.o
 obj-$(CONFIG_SMP)		 += platsmp.o headsmp.o platsmp-a9.o headsmp-a9.o
 endif
 
 obj-$(CONFIG_MACH_DOVE)		 += dove.o
-obj-$(CONFIG_MACH_KIRKWOOD)	 += kirkwood.o kirkwood-pm.o
+
+ifeq ($(CONFIG_MACH_KIRKWOOD),y)
+obj-y				 += kirkwood.o
+obj-$(CONFIG_PM)		 += kirkwood-pm.o
+endif