From 22c970f3468a6766b362d57fa32ebb92cb8cd6db Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Thu, 19 Apr 2007 15:48:34 +0200 Subject: [PATCH] [CPUFREQ] Fix limited cpufreq when booted on battery References: https://bugzilla.novell.com/show_bug.cgi?id=231107 https://bugzilla.novell.com/show_bug.cgi?id=264077 Fix limited cpufreq when booted on battery If booted on battery: cpufreq_set_policy (evil) is invoked which calls verify_within_limits. max_freq gets lowered and therefore users_policy.max, which is used to restore higher freqs via update_policy later is set to the already limited frequency -> you can never go up again, even BIOS allows higher freqs later. Signed-off-by: Thomas Renninger Signed-off-by: Dave Jones --- drivers/cpufreq/cpufreq.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 3162010900c9..fcb86dd8903d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -768,6 +768,9 @@ static int cpufreq_add_dev (struct sys_device * sys_dev) unlock_policy_rwsem_write(cpu); goto err_out; } + policy->user_policy.min = policy->cpuinfo.min_freq; + policy->user_policy.max = policy->cpuinfo.max_freq; + policy->user_policy.governor = policy->governor; #ifdef CONFIG_SMP for_each_cpu_mask(j, policy->cpus) { @@ -858,10 +861,13 @@ static int cpufreq_add_dev (struct sys_device * sys_dev) policy->governor = NULL; /* to assure that the starting sequence is * run in cpufreq_set_policy */ - unlock_policy_rwsem_write(cpu); /* set default policy */ - ret = cpufreq_set_policy(&new_policy); + ret = __cpufreq_set_policy(policy, &new_policy); + policy->user_policy.policy = policy->policy; + + unlock_policy_rwsem_write(cpu); + if (ret) { dprintk("setting policy failed\n"); goto err_out_unregister; -- 2.30.2