From bb96c552268e9f31c64c39a245e8e0400e0074dc Mon Sep 17 00:00:00 2001
From: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Date: Fri, 10 Aug 2018 15:47:09 +0300
Subject: [PATCH 6/6] net: ethernet: ti: cpsw: fix runtime_pm while add/kill
 vlan
Git-commit: 803c4f64d79d2fced37a0650b94e6c84296dffd6
Patch-mainline: v4.18
References: git-fixes

It's exclusive with normal behaviour but if try to set vlan to one of
the reserved values is made, the cpsw runtime pm is broken.

Fixes: a6c5d14f5136 ("drivers: net: cpsw: ndev: fix accessing to suspended device")
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
 drivers/net/ethernet/ti/cpsw.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index fbb4beacd66d..1f3a1ed0eb6b 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1974,14 +1974,16 @@ static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 		int i;
 
 		for (i = 0; i < cpsw->data.slaves; i++) {
-			if (vid == cpsw->slaves[i].port_vlan)
-				return -EINVAL;
+			if (vid == cpsw->slaves[i].port_vlan) {
+				ret = -EINVAL;
+				goto err;
+			}
 		}
 	}
 
 	dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
 	ret = cpsw_add_vlan_ale_entry(priv, vid);
-
+err:
 	pm_runtime_put(cpsw->dev);
 	return ret;
 }
@@ -2007,7 +2009,7 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
 
 		for (i = 0; i < cpsw->data.slaves; i++) {
 			if (vid == cpsw->slaves[i].port_vlan)
-				return -EINVAL;
+				goto err;
 		}
 	}
 
@@ -2017,6 +2019,7 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
 				  HOST_PORT_NUM, ALE_VLAN, vid);
 	ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
 				  0, ALE_VLAN, vid);
+err:
 	pm_runtime_put(cpsw->dev);
 	return ret;
 }
-- 
2.16.4