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[PATCH 3.16.y-ckt 093/133] windfarm: decrement client count when unregistering

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  [PATCH 3.16.y-ckt 093/133] windfarm: decrement client count when unregistering Luis Henriques <luis.henriques@canonical.com> - 2015-09-30 12:10 +0200

#1236010 — [PATCH 3.16.y-ckt 093/133] windfarm: decrement client count when unregistering

3.16.7-ckt18 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Paul Bolle <pebolle@tiscali.nl>

commit fe2b592173ff0274e70dc44d1d28c19bb995aa7c upstream.

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

Fixes: 75722d3992f5 ("[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: Luis Henriques <luis.henriques@canonical.com>
---
 drivers/macintosh/windfarm_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c
index 3ee198b65843..cc7ece1712b5 100644
--- a/drivers/macintosh/windfarm_core.c
+++ b/drivers/macintosh/windfarm_core.c
@@ -435,7 +435,7 @@ 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);
--
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