diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-10-03 19:56:50 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-30 04:21:23 +0400 |
| commit | 0d09d3125642ac1f02937e577819dbc515291d93 (patch) | |
| tree | f89ef56df320e0da2757642fc42828adcc24021e | |
| parent | 6d281e97a1c53abb73477a34806c1a000409c4b9 (diff) | |
| download | linux-0d09d3125642ac1f02937e577819dbc515291d93.tar.xz | |
cpuidle: call cpuidle_get_driver() from after taking cpuidle_driver_lock
There are a few cpuidle_get_driver() calls that aren't made under
cpuidle_driver_lock which is incorrect.
Fix them by calling cpuidle_get_driver() after taking cpuidle_driver_lock.
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpuidle/driver.c | 3 | ||||
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index a930005d5a3a..2458a741ad45 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -338,10 +338,11 @@ struct cpuidle_driver *cpuidle_driver_ref(void) */ void cpuidle_driver_unref(void) { - struct cpuidle_driver *drv = cpuidle_get_driver(); + struct cpuidle_driver *drv; spin_lock(&cpuidle_driver_lock); + drv = cpuidle_get_driver(); if (drv && !WARN_ON(drv->refcnt <= 0)) drv->refcnt--; diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index 8739cc05228c..a0223933536e 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -52,9 +52,10 @@ static ssize_t show_current_driver(struct device *dev, char *buf) { ssize_t ret; - struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver(); + struct cpuidle_driver *cpuidle_driver; spin_lock(&cpuidle_driver_lock); + cpuidle_driver = cpuidle_get_driver(); if (cpuidle_driver) ret = sprintf(buf, "%s\n", cpuidle_driver->name); else |