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cpuidle: Indicate when a device has been unregistered

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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: c878a52d3c (cpuidle: Check if device is already registered)
Signed-off-by: Dave Gerlach <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Cc: All applicable <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Dave Gerlach 2016-04-05 14:05:38 -05:00 • committed by Rafael J. Wysocki
commit c998c07836
1 changed files with 2 additions and 0 deletions
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2
drivers/cpuidle/cpuidle.c
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@ -433,6 +433,8 @@ 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)