diff options
| author | Thomas Renninger <trenn@suse.de> | 2006-01-26 18:46:33 +0100 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2006-01-26 10:49:39 -0800 |
| commit | 0961dd0d217d072df736d964f47c2b6600931e19 (patch) | |
| tree | 4f90dfb0f93608cd331a8e0b61f849bc9946451b /drivers/cpufreq | |
| parent | c70ca00f77eb1bb69c5a2d029b3a911bc88eac1b (diff) | |
| download | lwn-0961dd0d217d072df736d964f47c2b6600931e19.tar.gz lwn-0961dd0d217d072df736d964f47c2b6600931e19.zip | |
[CPUFREQ] _PPC frequency change issues
BIOS might change frequency behind our back when BIOS changes allowed
frequencies via _PPC. In this case cpufreq core got out of sync.
Ask driver for current freq and notify governors about a change
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 0a6c4c8642e7..7a511479ae29 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1429,6 +1429,14 @@ int cpufreq_update_policy(unsigned int cpu) policy.policy = data->user_policy.policy; policy.governor = data->user_policy.governor; + /* BIOS might change freq behind our back + -> ask driver for current freq and notify governors about a change */ + if (cpufreq_driver->get) { + policy.cur = cpufreq_driver->get(cpu); + if (data->cur != policy.cur) + cpufreq_out_of_sync(cpu, data->cur, policy.cur); + } + ret = __cpufreq_set_policy(data, &policy); mutex_unlock(&data->lock); |