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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-26 00:41:02 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-26 00:41:02 +0400
commit67635d397a643514fdfa859f611b86bd3ad8958d (patch)
treeb5df6d79b35cde39c00f0cc1432f128f473d4d6e /drivers/devfreq/devfreq.c
parent192fef18d0f5ac9a05a93ff6314fc9865c10fbf9 (diff)
parent949db153b6466c6f7cad5a427ecea94985927311 (diff)
downloadlinux-67635d397a643514fdfa859f611b86bd3ad8958d.tar.xz
Merge 3.8-rc5 into usb-next
This fixes up a conflict with drivers/usb/serial/io_ti.c that came up in linux-next. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/devfreq/devfreq.c')
-rw-r--r--drivers/devfreq/devfreq.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 53766f39aadd..3b367973a802 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)