From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Mon, 5 Aug 2013 04:42:00 +0000 (+0800)
Subject: tile: fix missing unlock on error in tile_net_open()
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=1155e964a616a9bd4b603f6f8bf4f47576b010c5;p=openwrt%2Fstaging%2Fblogic.git

tile: fix missing unlock on error in tile_net_open()

Add the missing unlock before return from function tile_net_open()
in the error handling case.

Introduced by commit f3286a3af89d6db7a488f3e8f02b98d67d50f00c.
(tile: support multiple mPIPE shims in tilegx network driver)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c
index 907b5772fd55..5d2a719fc688 100644
--- a/drivers/net/ethernet/tile/tilegx.c
+++ b/drivers/net/ethernet/tile/tilegx.c
@@ -1510,8 +1510,10 @@ static int tile_net_open(struct net_device *dev)
 
 	/* Get the instance info. */
 	rc = gxio_mpipe_link_instance(dev->name);
-	if (rc < 0 || rc >= NR_MPIPE_MAX)
+	if (rc < 0 || rc >= NR_MPIPE_MAX) {
+		mutex_unlock(&tile_net_devs_for_channel_mutex);
 		return -EIO;
+	}
 
 	priv->instance = rc;
 	instance = rc;