summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-exynos/exynos.c
diff options
context:
space:
mode:
authorDaniel Lezcano <daniel.lezcano@linaro.org>2014-05-09 06:52:59 +0900
committerKukjin Kim <kgene.kim@samsung.com>2014-05-26 05:21:08 +0900
commit70ecb842ba19d205a1e5d6c3de5656e1cb986284 (patch)
tree6ba860407ba1eb78524f06525629f60ca631f100 /arch/arm/mach-exynos/exynos.c
parentdcef663d49e3beb09bc3cb436c997ce40aaf80fa (diff)
ARM: EXYNOS: Disable cpuidle for exynos5440
There is no point to register the cpuidle driver for the 5440 as it has only one WFI state which is the default idle function when the cpuidle driver is disabled. By disabling cpuidle we prevent to enter to the governor computation for nothing, thus saving a lot of processing time. The only drawback is the statistic via sysfs on this state which is lost but it is meaningless and it could be retrieved from the ftrace easily. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/exynos.c')
-rw-r--r--arch/arm/mach-exynos/exynos.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index e973ff5de7b..89872405ccc 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -177,6 +177,9 @@ static struct platform_device exynos_cpuidle = {
void __init exynos_cpuidle_init(void)
{
+ if (soc_is_exynos5440())
+ return;
+
platform_device_register(&exynos_cpuidle);
}