mvebu: remove linux 4.4 support

[openwrt/staging/lynxis/omap.git] / target / linux / mvebu / patches-4.4 / 047-net-mvneta-Fix-spinlock-usage.patch

diff --git a/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch b/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch
deleted file mode 100644 (file)
index a8e78df..0000000
--- a/target/linux/mvebu/patches-4.4/047-net-mvneta-Fix-spinlock-usage.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-From: Gregory CLEMENT <gregory.clement@free-electrons.com>
-Date: Sat, 12 Mar 2016 18:44:17 +0100
-Subject: [PATCH] net: mvneta: Fix spinlock usage
-
-In the previous patch, the spinlock was not initialized. While it didn't
-cause any trouble yet it could be a problem to use it uninitialized.
-
-The most annoying part was the critical section protected by the spinlock
-in mvneta_stop(). Some of the functions could sleep as pointed when
-activated CONFIG_DEBUG_ATOMIC_SLEEP. Actually, in mvneta_stop() we only
-need to protect the is_stopped flagged, indeed the code of the notifier
-for CPU online is protected by the same spinlock, so when we get the
-lock, the notifer work is done.
-
-Reported-by: Patrick Uiterwijk <patrick@puiterwijk.org>
-Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
-
---- a/drivers/net/ethernet/marvell/mvneta.c
-+++ b/drivers/net/ethernet/marvell/mvneta.c
-@@ -3484,17 +3484,17 @@ static int mvneta_stop(struct net_device
-       struct mvneta_port *pp = netdev_priv(dev);
- 
-       /* Inform that we are stopping so we don't want to setup the
--       * driver for new CPUs in the notifiers
-+       * driver for new CPUs in the notifiers. The code of the
-+       * notifier for CPU online is protected by the same spinlock,
-+       * so when we get the lock, the notifer work is done.
-        */
-       spin_lock(&pp->lock);
-       pp->is_stopped = true;
-+      spin_unlock(&pp->lock);
-+
-       mvneta_stop_dev(pp);
-       mvneta_mdio_remove(pp);
-       unregister_cpu_notifier(&pp->cpu_notifier);
--      /* Now that the notifier are unregistered, we can release le
--       * lock
--       */
--      spin_unlock(&pp->lock);
-       on_each_cpu(mvneta_percpu_disable, pp, true);
-       free_percpu_irq(dev->irq, pp->ports);
-       mvneta_cleanup_rxqs(pp);
-@@ -4027,6 +4027,7 @@ static int mvneta_probe(struct platform_
-       dev->ethtool_ops = &mvneta_eth_tool_ops;
- 
-       pp = netdev_priv(dev);
-+      spin_lock_init(&pp->lock);
-       pp->phy_node = phy_node;
-       pp->phy_interface = phy_mode;
-