drivers/char/hw_random/exynos-rng.c: add CONFIG_PM_SLEEP to suspend/resume functions

Add 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>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index ac47631ab34f0caa0383853a0804a4ff4759e1d1..b7e48a2170b0ec7b9eb87799e1db74e23d52918b 100644 (file)
--- 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);