Add #ifdef CONFIG_PM_SLEEP around keyscan_supend() and keyscan_resume() to fix
the following compiler warnings occuring if CONFIG_PM_SLEEP is unset:

  + /scratch/kisskb/src/drivers/input/keyboard/st-keyscan.c: warning: 
'keyscan_resume' defined but not used [-Wunused-function]:  => 235:12
  + /scratch/kisskb/src/drivers/input/keyboard/st-keyscan.c: warning: 
'keyscan_suspend' defined but not used [-Wunused-function]:  => 218:12

Reported-by: Geert Uytterhoeven <[email protected]>
Link: https://lkml.org/lkml/2014/7/8/109
Signed-off-by: Tobias Klauser <[email protected]>
---
 drivers/input/keyboard/st-keyscan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/input/keyboard/st-keyscan.c 
b/drivers/input/keyboard/st-keyscan.c
index 758b487..de7be4f 100644
--- a/drivers/input/keyboard/st-keyscan.c
+++ b/drivers/input/keyboard/st-keyscan.c
@@ -215,6 +215,7 @@ static int keyscan_probe(struct platform_device *pdev)
        return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int keyscan_suspend(struct device *dev)
 {
        struct platform_device *pdev = to_platform_device(dev);
@@ -249,6 +250,7 @@ static int keyscan_resume(struct device *dev)
        mutex_unlock(&input->mutex);
        return retval;
 }
+#endif
 
 static SIMPLE_DEV_PM_OPS(keyscan_dev_pm_ops, keyscan_suspend, keyscan_resume);
 
-- 
2.0.1


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