diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2013-01-31 20:22:57 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-01-31 20:22:57 -0800 |
| commit | b5831174f9d3f12a492deda6374ca96f87b694f8 (patch) | |
| tree | 96aa46239200021f9545bda5836f7e80a640d88b /drivers/devfreq/devfreq.c | |
| parent | 40a1ef95da85843696fc3ebe5fce39b0db32669f (diff) | |
| parent | 88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff) | |
Merge tag 'v3.8-rc6' into x86/urgent
Linux 3.8-rc6
Merged in order to add a documentation update versus new code in
upstream.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'drivers/devfreq/devfreq.c')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 53766f39aad..3b367973a80 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -994,6 +994,11 @@ module_exit(devfreq_exit); * @freq: The frequency given to target function * @flags: Flags handed from devfreq framework. * + * Locking: This function must be called under rcu_read_lock(). opp is a rcu + * protected pointer. The reason for the same is that the opp pointer which is + * returned will remain valid for use with opp_get_{voltage, freq} only while + * under the locked area. The pointer returned must be used prior to unlocking + * with rcu_read_unlock() to maintain the integrity of the pointer. */ struct opp *devfreq_recommended_opp(struct device *dev, unsigned long *freq, u32 flags) |