[PATCH v3] ARM: EXYNOS: Fix suspend/resume sequences
From: Tomasz Figa <hidden>
Date: 2014-07-21 10:24:16
Also in:
linux-pm, linux-samsung-soc, lkml
From: Tomasz Figa <hidden>
Date: 2014-07-21 10:24:16
Also in:
linux-pm, linux-samsung-soc, lkml
Hi, On 15.07.2014 16:26, Tomasz Figa wrote:
Forgot to CC Daniel and linux-pm. Sorry for the noise. On 15.07.2014 16:24, Tomasz Figa wrote:quoted
Due to recent consolidation of Exynos suspend and cpuidle code, some parts of suspend and resume sequences are executed two times, once from exynos_pm_syscore_ops and then from exynos_cpu_pm_notifier() and thus it breaks suspend, at least on Exynos4-based boards. In addition, simple core power down from a cpuidle driver could, in case of CPU 0 could result in calling functions that are specific to suspend and deeper idle states. This patch fixes the issue by moving those operations outside the CPU PM notifier into suspend and AFTR code paths. This leads to a bit of code duplication, but allows additional code simplification, so in the end more code is removed than added. Signed-off-by: Tomasz Figa <redacted> --- arch/arm/mach-exynos/pm.c | 164 ++++++++++++++++++--------------------- drivers/cpuidle/cpuidle-exynos.c | 25 +----- 2 files changed, 80 insertions(+), 109 deletions(-)
This is an important regression fix for 3.16 and today 3.16-rc6 was already released... Kukjin, could you pick up this patch and few others you missed and make sure that it is included in 3.16-rc7? If you are busy, maybe Arnd or Olof could take them directly? Best regards, Tomasz