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| author | Lan Tianyu <tianyu.lan@intel.com> | 2014-09-18 15:03:07 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-22 14:23:18 +0200 |
| commit | 8e30444e153008e8eb3e74cbcb7a865bfcfb04a0 (patch) | |
| tree | 3e63816efa5d70f4343d7018683b9c4b7fe51322 | |
| parent | 0f33be009b89d2268e94194dc4fd01a7851b6d51 (diff) | |
| download | linux-8e30444e153008e8eb3e74cbcb7a865bfcfb04a0.tar.gz | |
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 <tianyu.lan@intel.com>
Cc: 3.15+ <stable@vger.kernel.org> # 3.15+
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index d9fdeddcef96e..eb9bb7848e501 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__, |