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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-06-08 22:40:08 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-06-08 22:40:08 +0400 |
| commit | 76962be8491b18ae7ff4fd6a4accd398bdb402a2 (patch) | |
| tree | 976958bf8e4989a69901bfbb25dd6463728c6cb5 /drivers/cpuidle/driver.c | |
| parent | 5e27fb78df95e027723af2c90ecc9b4527ae59e9 (diff) | |
| parent | d30e5d897c3da7c2d17c8112331b66ed953eec78 (diff) | |
| download | linux-76962be8491b18ae7ff4fd6a4accd398bdb402a2.tar.xz | |
Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Diffstat (limited to 'drivers/cpuidle/driver.c')
| -rw-r--r-- | drivers/cpuidle/driver.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index 2257004fe33d..fd1601e3d125 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -14,7 +14,7 @@ #include "cpuidle.h" -struct cpuidle_driver *cpuidle_curr_driver; +static struct cpuidle_driver *cpuidle_curr_driver; DEFINE_SPINLOCK(cpuidle_driver_lock); /** @@ -40,13 +40,25 @@ int cpuidle_register_driver(struct cpuidle_driver *drv) EXPORT_SYMBOL_GPL(cpuidle_register_driver); /** + * cpuidle_get_driver - return the current driver + */ +struct cpuidle_driver *cpuidle_get_driver(void) +{ + return cpuidle_curr_driver; +} +EXPORT_SYMBOL_GPL(cpuidle_get_driver); + +/** * cpuidle_unregister_driver - unregisters a driver * @drv: the driver */ void cpuidle_unregister_driver(struct cpuidle_driver *drv) { - if (!drv) + if (drv != cpuidle_curr_driver) { + WARN(1, "invalid cpuidle_unregister_driver(%s)\n", + drv->name); return; + } spin_lock(&cpuidle_driver_lock); cpuidle_curr_driver = NULL; |