This is a note to let you know that I've just added the patch titled
cpufreq: fix cpufreq suspend/resume for intel_pstate
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpufreq-fix-cpufreq-suspend-resume-for-intel_pstate.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8e30444e153008e8eb3e74cbcb7a865bfcfb04a0 Mon Sep 17 00:00:00 2001
From: Lan Tianyu <tianyu.lan@xxxxxxxxx>
Date: Thu, 18 Sep 2014 15:03:07 +0800
Subject: cpufreq: fix cpufreq suspend/resume for intel_pstate
From: Lan Tianyu <tianyu.lan@xxxxxxxxx>
commit 8e30444e153008e8eb3e74cbcb7a865bfcfb04a0 upstream.
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@xxxxxxxxx>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1666,6 +1666,8 @@ void cpufreq_suspend(void)
if (!cpufreq_driver)
return;
+ cpufreq_suspended = true;
+
if (!has_target())
return;
@@ -1680,8 +1682,6 @@ void cpufreq_suspend(void)
pr_err("%s: Failed to suspend driver: %p\n", __func__,
policy);
}
-
- cpufreq_suspended = true;
}
/**
@@ -1697,13 +1697,13 @@ 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__,
Patches currently in stable-queue which might be from tianyu.lan@xxxxxxxxx are
queue-3.16/cpufreq-fix-cpufreq-suspend-resume-for-intel_pstate.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html