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windfarm: decrement client count when unregistering 

commit fe2b592173ff0274e70dc44d1d28c19bb995aa7c upstream.

wf_unregister_client() increments the client count when a client
unregisters. That is obviously incorrect. Decrement that client count
instead.

Fixes: 75722d3992 ("[PATCH] ppc64: Thermal control for SMU based machines")

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Paul Bolle 2015-07-31 14:08:58 +02:00 committed by Zefan Li
parent 7680c810fc
commit 28709fcfc6
1 changed files with 1 additions and 1 deletions
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2
drivers/macintosh/windfarm_core.c
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@ -421,7 +421,7 @@ int wf_unregister_client(struct notifier_block *nb)
{
mutex_lock(&wf_lock);
blocking_notifier_chain_unregister(&wf_client_list, nb);
wf_client_count++;
wf_client_count--;
if (wf_client_count == 0)
wf_stop_thread();
mutex_unlock(&wf_lock);