Kevin Hilman wrote:
From: Kevin Hilman khilman@linaro.org
The option CONFIG_EXYNOS5420_MCPM is causing imprecise external aborts during boot testing, causing various userspace startup failures.
Disable until it has gotten more testing.
Cc: Kukjin Kim kgene.kim@samsung.com, Cc: Javier Martinez Canillas javier.martinez@collabora.co.uk, Cc: Sachin Kamat sachin.kamat@samsung.com, Cc: Doug Anderson dianders@chromium.org, Cc: Bartlomiej Zolnierkiewicz b.zolnierkie@samsung.com, Cc: Krzysztof Kozlowski k.kozlowski@samsung.com, Cc: Tushar Behera tushar.behera@linaro.org, Cc: stable@vger.kernel.org # v3.17+ Signed-off-by: Kevin Hilman khilman@linaro.org
This has been reported by a few people[1], but not investigated or fixed, so it's time to disable this feature until it can be fixed.
Hi Kevin,
Yeah I agree with your opinion.
But as you can see my tree, I've queued regarding mcpm patches for 3.19 will be shown in -next in this weekend. Anyway let me apply this into -fixes and then let's enable after test its functionality in -next in a couple of days.
Thanks, Kukjin
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-September/288344....
arch/arm/configs/exynos_defconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index 72058b8a6f4d..a250dcbf34cd 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -10,7 +10,7 @@ CONFIG_MODULE_UNLOAD=y CONFIG_PARTITION_ADVANCED=y CONFIG_ARCH_EXYNOS=y CONFIG_ARCH_EXYNOS3=y -CONFIG_EXYNOS5420_MCPM=y +CONFIG_EXYNOS5420_MCPM=n CONFIG_SMP=y CONFIG_BIG_LITTLE=y CONFIG_BL_SWITCHER=y -- 2.1.0