[PATCH 4/5] sonypi: suspend/resume callbacks should be conditionally compiled on CONFIG_PM_SLEEP

From: Yuanhan Liu
Date: Tue Oct 16 2012 - 10:59:43 EST

This will fix warnings like following when CONFIG_PM_SLEEP is not set:

warning: 'xxx_suspend' defined but not used [-Wunused-function]
warning: 'xxx_resume' defined but not used [-Wunused-function]

SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)

Only references the callbacks on CONFIG_PM_SLEEP (instead of CONFIG_PM).

Cc: Mattia Dongili <malattia@xxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: platform-driver-x86@xxxxxxxxxxxxxxx
Signed-off-by: Yuanhan Liu <yuanhan.liu@xxxxxxxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
drivers/char/sonypi.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 320debb..9b4f011 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -1456,7 +1456,7 @@ static int __devexit sonypi_remove(struct platform_device *dev)
return 0;

-#ifdef CONFIG_PM
static int old_camera_power;

static int sonypi_suspend(struct device *dev)

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