1 files changed, 0 insertions, 68 deletions
diff --git a/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch b/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch
deleted file mode 100644
index 1d3d6aaf14..0000000000
--- a/target/linux/mvebu/patches-4.4/041-net-mvneta-The-mvneta_percpu_elect-function-should-b.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-From: Gregory CLEMENT <gregory.clement@free-electrons.com>
-Date: Thu, 4 Feb 2016 22:09:28 +0100
-Subject: [PATCH] net: mvneta: The mvneta_percpu_elect function should be
- atomic
-
-Electing a CPU must be done in an atomic way: it should be done after or
-before the removal/insertion of a CPU and this function is not reentrant.
-
-During the loop of mvneta_percpu_elect we associates the queues to the
-CPUs, if there is a topology change during this loop, then the mapping
-between the CPUs and the queues could be wrong. During this loop the
-interrupt mask is also updating for each CPUs, It should not be changed
-in the same time by other part of the driver.
-
-This patch adds spinlock to create the needed critical sections.
-
-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
-@@ -370,6 +370,10 @@ struct mvneta_port {
- 	struct net_device *dev;
- 	struct notifier_block cpu_notifier;
- 	int rxq_def;
-+	/* Protect the access to the percpu interrupt registers,
-+	 * ensuring that the configuration remains coherent.
-+	 */
-+	spinlock_t lock;
- 
- 	/* Core clock */
- 	struct clk *clk;
-@@ -2857,6 +2861,12 @@ static void mvneta_percpu_elect(struct m
- {
- 	int elected_cpu = 0, max_cpu, cpu, i = 0;
- 
-+	/* Electing a CPU must be done in an atomic way: it should be
-+	 * done after or before the removal/insertion of a CPU and
-+	 * this function is not reentrant.
-+	 */
-+	spin_lock(&pp->lock);
-+
- 	/* Use the cpu associated to the rxq when it is online, in all
- 	 * the other cases, use the cpu 0 which can't be offline.
- 	 */
-@@ -2900,6 +2910,7 @@ static void mvneta_percpu_elect(struct m
- 		i++;
- 
- 	}
-+	spin_unlock(&pp->lock);
- };
- 
- static int mvneta_percpu_notifier(struct notifier_block *nfb,
-@@ -2954,8 +2965,13 @@ static int mvneta_percpu_notifier(struct
- 	case CPU_DOWN_PREPARE:
- 	case CPU_DOWN_PREPARE_FROZEN:
- 		netif_tx_stop_all_queues(pp->dev);
-+		/* Thanks to this lock we are sure that any pending
-+		 * cpu election is done
-+		 */
-+		spin_lock(&pp->lock);
- 		/* Mask all ethernet port interrupts */
- 		on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
-+		spin_unlock(&pp->lock);
- 
- 		napi_synchronize(&port->napi);
- 		napi_disable(&port->napi);