mvebu: remove linux 4.4 support

[openwrt/staging/lynxis/omap.git] / target / linux / mvebu / patches-4.4 / 050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch

diff --git a/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch b/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch
deleted file mode 100644 (file)
index 0786200..0000000
--- a/target/linux/mvebu/patches-4.4/050-net-mvneta-fix-changing-MTU-when-using-per-cpu-proce.patch
+++ /dev/null
@@ -1,75 +0,0 @@
-From: Marcin Wojtas <mw@semihalf.com>
-Date: Fri, 1 Apr 2016 15:21:18 +0200
-Subject: [PATCH] net: mvneta: fix changing MTU when using per-cpu processing
-
-After enabling per-cpu processing it appeared that under heavy load
-changing MTU can result in blocking all port's interrupts and
-transmitting data is not possible after the change.
-
-This commit fixes above issue by disabling percpu interrupts for the
-time, when TXQs and RXQs are reconfigured.
-
-Signed-off-by: Marcin Wojtas <mw@semihalf.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
-
---- a/drivers/net/ethernet/marvell/mvneta.c
-+++ b/drivers/net/ethernet/marvell/mvneta.c
-@@ -3040,6 +3040,20 @@ static int mvneta_check_mtu_valid(struct
-       return mtu;
- }
- 
-+static void mvneta_percpu_enable(void *arg)
-+{
-+      struct mvneta_port *pp = arg;
-+
-+      enable_percpu_irq(pp->dev->irq, IRQ_TYPE_NONE);
-+}
-+
-+static void mvneta_percpu_disable(void *arg)
-+{
-+      struct mvneta_port *pp = arg;
-+
-+      disable_percpu_irq(pp->dev->irq);
-+}
-+
- /* Change the device mtu */
- static int mvneta_change_mtu(struct net_device *dev, int mtu)
- {
-@@ -3064,6 +3078,7 @@ static int mvneta_change_mtu(struct net_
-        * reallocation of the queues
-        */
-       mvneta_stop_dev(pp);
-+      on_each_cpu(mvneta_percpu_disable, pp, true);
- 
-       mvneta_cleanup_txqs(pp);
-       mvneta_cleanup_rxqs(pp);
-@@ -3087,6 +3102,7 @@ static int mvneta_change_mtu(struct net_
-               return ret;
-       }
- 
-+      on_each_cpu(mvneta_percpu_enable, pp, true);
-       mvneta_start_dev(pp);
-       mvneta_port_up(pp);
- 
-@@ -3240,20 +3256,6 @@ static void mvneta_mdio_remove(struct mv
-       pp->phy_dev = NULL;
- }
- 
--static void mvneta_percpu_enable(void *arg)
--{
--      struct mvneta_port *pp = arg;
--
--      enable_percpu_irq(pp->dev->irq, IRQ_TYPE_NONE);
--}
--
--static void mvneta_percpu_disable(void *arg)
--{
--      struct mvneta_port *pp = arg;
--
--      disable_percpu_irq(pp->dev->irq);
--}
--
- /* 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.