From: Vladimir Oltean <olteanv@gmail.com>
Date: Sat, 8 Jun 2019 12:04:28 +0000 (+0300)
Subject: net: dsa: Add teardown callback for drivers
X-Git-Tag: v5.4-rc1~616^2~303^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e3f847a02aabfecea519d7b2fd48f4d6f551be6;p=platform%2Fkernel%2Flinux-rpi.git

net: dsa: Add teardown callback for drivers

This is helpful for e.g. draining per-driver (not per-port) tagger
queues.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 1131d9f..82a2baa 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -357,6 +357,7 @@ struct dsa_switch_ops {
 						  int port);
 
 	int	(*setup)(struct dsa_switch *ds);
+	void	(*teardown)(struct dsa_switch *ds);
 	u32	(*get_phy_flags)(struct dsa_switch *ds, int port);
 
 	/*
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 38d11c8..3abd173 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -408,6 +408,9 @@ static void dsa_switch_teardown(struct dsa_switch *ds)
 
 	dsa_switch_unregister_notifier(ds);
 
+	if (ds->ops->teardown)
+		ds->ops->teardown(ds);
+
 	if (ds->devlink) {
 		devlink_unregister(ds->devlink);
 		devlink_free(ds->devlink);