From: Ben Dooks <ben-linux@fluff.org>
Date: Thu, 7 Aug 2008 16:21:09 +0000 (+0100)
Subject: AX88796: Fix locking in ethtool support
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c0912585ec8b64d846d56995241f2c8a7f48ee75;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

AX88796: Fix locking in ethtool support

Fix a pair of nasty locking problems in the ax88796 driver
spotted by a sparse check:

warning: context imbalance in 'ax_get_settings' - wrong count at exit
warning: context imbalance in 'ax_set_settings' - wrong count at exit

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

diff --git a/drivers/net/ax88796.c b/drivers/net/ax88796.c
index 0b4adf4a0f7d..a886a4b9f7e5 100644
--- a/drivers/net/ax88796.c
+++ b/drivers/net/ax88796.c
@@ -554,7 +554,7 @@ static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 
 	spin_lock_irqsave(&ax->mii_lock, flags);
 	mii_ethtool_gset(&ax->mii, cmd);
-	spin_lock_irqsave(&ax->mii_lock, flags);
+	spin_unlock_irqrestore(&ax->mii_lock, flags);
 
 	return 0;
 }
@@ -567,7 +567,7 @@ static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 
 	spin_lock_irqsave(&ax->mii_lock, flags);
 	rc = mii_ethtool_sset(&ax->mii, cmd);
-	spin_lock_irqsave(&ax->mii_lock, flags);
+	spin_unlock_irqrestore(&ax->mii_lock, flags);
 
 	return rc;
 }