[PATCH] hwrng: exynos - add CONFIG_PM_SLEEP to suspend/resume functions

[Jingoo Han <jg1.han@samsung.com>]

This patch adds CONFIG_PM_SLEEP to suspend/resume functions to fix
the following build warning when CONFIG_PM_SLEEP is not selected.

drivers/char/hw_random/exynos-rng.c:147:12: warning: 'exynos_rng_runtime_suspend' defined but not used [-Wunused-function]
drivers/char/hw_random/exynos-rng.c:157:12: warning: 'exynos_rng_runtime_resume' defined but not used [-Wunused-function]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
 drivers/char/hw_random/exynos-rng.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index ac47631..b7e48a2 100644
--- a/drivers/char/hw_random/exynos-rng.c
+++ b/drivers/char/hw_random/exynos-rng.c
@@ -144,6 +144,7 @@ static int exynos_rng_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int exynos_rng_runtime_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -161,7 +162,7 @@ static int exynos_rng_runtime_resume(struct device *dev)
 
 	return clk_prepare_enable(exynos_rng->clk);
 }
-
+#endif
 
 static UNIVERSAL_DEV_PM_OPS(exynos_rng_pm_ops, exynos_rng_runtime_suspend,
 					exynos_rng_runtime_resume, NULL);
-- 
1.7.2.5