[PATCH 1/3] cpuidle: exynos: Allow to use the driver without AFTR
From: Krzysztof Kozlowski <hidden>
Date: 2014-07-21 08:36:39
Also in:
linux-pm, linux-samsung-soc, lkml
Subsystem:
cpu idle time management framework, cpuidle driver - arm exynos, the rest · Maintainers:
"Rafael J. Wysocki", Daniel Lezcano, Kukjin Kim, Linus Torvalds
Allow the driver to be used when AFTR enter function is not provided (device platform data is NULL). This actually does not give any special energy-saving benefits but allows to track the idle time of each core. Additionally it is a safe way to validate supplied platform data. Signed-off-by: Krzysztof Kozlowski <redacted> --- drivers/cpuidle/cpuidle-exynos.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/cpuidle/cpuidle-exynos.c b/drivers/cpuidle/cpuidle-exynos.c
index 7c0151263828..5325a394be7e 100644
--- a/drivers/cpuidle/cpuidle-exynos.c
+++ b/drivers/cpuidle/cpuidle-exynos.c@@ -77,7 +77,10 @@ static int exynos_cpuidle_probe(struct platform_device *pdev) { int ret; + /* If NULL enter only WFI */ exynos_enter_aftr = (void *)(pdev->dev.platform_data); + if (!exynos_enter_aftr) + exynos_idle_driver.state_count = 1; ret = cpuidle_register(&exynos_idle_driver, NULL); if (ret) {
--
1.9.1