[PATCH 2/8] cpuidle: add cpuidle_unregister_driver() error check
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From: Len Brown on 26 May 2010 22:50 From: Len Brown <len.brown(a)intel.com> When cpuidle_unregister_driver() is called with a driver other than the one that was successfully registered, do nothing. Previously we'd NULL-out the one that was registered. But that required the callers to remember what this routine already remembers. With this check, the callers can be simplified. Signed-off-by: Len Brown <len.brown(a)intel.com> --- drivers/cpuidle/driver.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index 2257004..30bcd44 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -49,7 +49,8 @@ void cpuidle_unregister_driver(struct cpuidle_driver *drv) return; spin_lock(&cpuidle_driver_lock); - cpuidle_curr_driver = NULL; + if (drv == cpuidle_curr_driver) + cpuidle_curr_driver = NULL; spin_unlock(&cpuidle_driver_lock); } -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |