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Message-id: <56b9c89c17c1a85886f6d1928349e35bbb48c856.1274926772.git.len.brown@intel.com> Date: Wed, 26 May 2010 22:42:25 -0400 From: Len Brown <lenb@...nel.org> To: x86@...nel.org, linux-pm@...ts.linux-foundation.org Cc: linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com> Subject: [PATCH 2/8] cpuidle: add cpuidle_unregister_driver() error check From: Len Brown <len.brown@...el.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@...el.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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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