From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
"David S. Miller" <davem@davemloft.net>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH net] net: dsa: Do not suspend/resume closed slave_dev
Date: Tue, 31 Jul 2018 17:12:52 -0700 [thread overview]
Message-ID: <20180801001253.16312-1-f.fainelli@gmail.com> (raw)
If a DSA slave network device was previously disabled, there is no need
to suspend or resume it.
Fixes: 2446254915a7 ("net: dsa: allow switch drivers to implement suspend/resume hooks")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
net/dsa/slave.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 1e3b6a6d8a40..732369c80644 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1248,6 +1248,9 @@ int dsa_slave_suspend(struct net_device *slave_dev)
{
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
+ if (!netif_running(slave_dev))
+ return 0;
+
netif_device_detach(slave_dev);
rtnl_lock();
@@ -1261,6 +1264,9 @@ int dsa_slave_resume(struct net_device *slave_dev)
{
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
+ if (!netif_running(slave_dev))
+ return 0;
+
netif_device_attach(slave_dev);
rtnl_lock();
--
2.14.1
next reply other threads:[~2018-08-01 0:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 0:12 Florian Fainelli [this message]
2018-08-01 15:25 ` [PATCH net] net: dsa: Do not suspend/resume closed slave_dev Andrew Lunn
2018-08-01 16:55 ` David Miller
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