From 8e30444e153008e8eb3e74cbcb7a865bfcfb04a0 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Thu, 18 Sep 2014 15:03:07 +0800 Subject: [PATCH] cpufreq: fix cpufreq suspend/resume for intel_pstate Cpufreq core introduces cpufreq_suspended flag to let cpufreq sysfs nodes across S2RAM/S2DISK. But the flag is only set in the cpufreq_suspend() for cpufreq drivers which have target or target_index callback. This skips intel_pstate driver. This patch is to set the flag before checking target or target_index callback. Fixes: 2f0aea936360 (cpufreq: suspend governors on system suspend/hibernate) Signed-off-by: Lan Tianyu Cc: 3.15+ # 3.15+ [rjw: Subject] Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index d9fdeddcef96..eb9bb7848e50 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1656,6 +1656,8 @@ void cpufreq_suspend(void) if (!cpufreq_driver) return; + cpufreq_suspended = true; + if (!has_target()) return; @@ -1670,8 +1672,6 @@ void cpufreq_suspend(void) pr_err("%s: Failed to suspend driver: %p\n", __func__, policy); } - - cpufreq_suspended = true; } /** @@ -1687,13 +1687,13 @@ void cpufreq_resume(void) if (!cpufreq_driver) return; + cpufreq_suspended = false; + if (!has_target()) return; pr_debug("%s: Resuming Governors\n", __func__); - cpufreq_suspended = false; - list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) pr_err("%s: Failed to resume driver: %p\n", __func__,