linux-kernel - [ 26/30] dca: check against empty dca_domains list before unregister provider fix

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Date:	Fri,  1 Mar 2013 11:45:47 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>
Subject: [ 26/30] dca: check against empty dca_domains list before unregister provider fix

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

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

In 3.0.67, commit 7a9a20ea77e7508c795dead9ab2f6c98a617762d (dca: check
against empty dca_domains list before unregister provider), upstream
commit c419fcfd071cf34ba00f9f65282583772d2655e7, added a fail path to
unregister_dca_provider. It added there also a call to
raw_spin_unlock_irqrestore. But in 3.0, the lock is not raw, so this
results in:
drivers/dca/dca-core.c: In function 'unregister_dca_provider':
drivers/dca/dca-core.c:413: warning: passing argument 1 of '_raw_spin_unlock_irqrestore' from incompatible pointer type

Fix it by calling spin_unlock_irqrestore properly.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/dca/dca-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/dca/dca-core.c
+++ b/drivers/dca/dca-core.c
@@ -410,7 +410,7 @@ void unregister_dca_provider(struct dca_
 	spin_lock_irqsave(&dca_lock, flags);

 	if (list_empty(&dca_domains)) {
-		raw_spin_unlock_irqrestore(&dca_lock, flags);
+		spin_unlock_irqrestore(&dca_lock, flags);
 		return;
 	}

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