[PATCH 5/6] ARM: EXYNOS: Fix suspend/resume sequencies
From: Abhilash Kesavan <hidden>
Date: 2014-06-24 15:33:06
Also in:
linux-samsung-soc, lkml
Hi Tomasz, On Tue, Jun 24, 2014 at 7:27 PM, Tomasz Figa [off-list ref] wrote:
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. This patch fixes the issue by removing exynos_pm_syscore_ops completely and making the code rely only on CPU PM notifier. Tested on Exynos4210-based Trats board. Signed-off-by: Tomasz Figa <redacted> --- arch/arm/mach-exynos/pm.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-)
A patch from me has recently gone in which converts the soc_is checks for A9 specific registers to the A9 part number. This patch will probably have to be rebased atop it. Regards, Abhilash
quoted hunk ↗ jump to hunk
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 87c0d34..98d4926 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c@@ -364,11 +364,6 @@ early_wakeup: return; } -static struct syscore_ops exynos_pm_syscore_ops = { - .suspend = exynos_pm_suspend, - .resume = exynos_pm_resume, -}; - /* * Suspend Ops */@@ -438,19 +433,13 @@ static int exynos_cpu_pm_notifier(struct notifier_block *self, switch (cmd) { case CPU_PM_ENTER: - if (cpu == 0) { - exynos_pm_central_suspend(); - exynos_cpu_save_register(); - } + if (cpu == 0) + exynos_pm_suspend(); break; case CPU_PM_EXIT: - if (cpu == 0) { - if (!soc_is_exynos5250()) - scu_enable(S5P_VA_SCU); - exynos_cpu_restore_register(); - exynos_pm_central_resume(); - } + if (cpu == 0) + exynos_pm_resume(); break; }@@ -475,6 +464,5 @@ void __init exynos_pm_init(void) tmp |= ((0xFF << 8) | (0x1F << 1)); __raw_writel(tmp, S5P_WAKEUP_MASK); - register_syscore_ops(&exynos_pm_syscore_ops); suspend_set_ops(&exynos_suspend_ops); } --1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/