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| author | Dave Gerlach <d-gerlach@ti.com> | 2016-04-05 22:05:38 +0300 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-06-01 23:26:25 +0300 |
| commit | 887f64e66000496335a0bd894d57f45a6b37076b (patch) | |
| tree | 3bb7a01a8168c53948e56b065854555c8c292426 /drivers/cpuidle | |
| parent | df4bf842548579e2574b0007eec73938c71e6e13 (diff) | |
| download | linux-887f64e66000496335a0bd894d57f45a6b37076b.tar.xz | |
cpuidle: Indicate when a device has been unregistered
[ Upstream commit c998c07836f985b24361629dc98506ec7893e7a0 ]
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>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
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 9ab99642ca7a..5a4ff9c7ce00 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -355,6 +355,8 @@ 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) |