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| author | Dave Gerlach <d-gerlach@ti.com> | 2016-04-05 14:05:38 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-08-22 22:37:49 +0100 |
| commit | f9f848173ae6bf94fa9cedaf9a44a16f762c8654 (patch) | |
| tree | ccde2d7197392eef17c78b3a58310bac3c35531f /drivers/cpuidle | |
| parent | 140d276c44a0fad248911db867e65488fcdd4d99 (diff) | |
| download | linux-stable-f9f848173ae6bf94fa9cedaf9a44a16f762c8654.tar.gz linux-stable-f9f848173ae6bf94fa9cedaf9a44a16f762c8654.tar.bz2 linux-stable-f9f848173ae6bf94fa9cedaf9a44a16f762c8654.zip | |
cpuidle: Indicate when a device has been unregistered
commit c998c07836f985b24361629dc98506ec7893e7a0 upstream.
Currently the 'registered' member of the cpuidle_device struct is set
to 1 during cpuidle_register_device. In this same function there are
checks to see if the device is already registered to prevent duplicate
calls to register the device, but this value is never set to 0 even on
unregister of the device. Because of this, any attempt to call
cpuidle_register_device after a call to cpuidle_unregister_device will
fail which shouldn't be the case.
To prevent this, set registered to 0 when the device is unregistered.
Fixes: c878a52d3c7c (cpuidle: Check if device is already registered)
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index d3185606473a..6cc78b189075 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -347,6 +347,8 @@ static void __cpuidle_unregister_device(struct cpuidle_device *dev) list_del(&dev->device_list); per_cpu(cpuidle_devices, dev->cpu) = NULL; module_put(drv->owner); + + dev->registered = 0; } static void __cpuidle_device_init(struct cpuidle_device *dev) |