kernel: remove support for kernel 4.19

[openwrt/openwrt.git] / target / linux / ath79 / patches-4.19 / 901-phy-mdio-bitbang-prevent-rescheduling-during-command.patch

diff --git a/target/linux/ath79/patches-4.19/901-phy-mdio-bitbang-prevent-rescheduling-during-command.patch b/target/linux/ath79/patches-4.19/901-phy-mdio-bitbang-prevent-rescheduling-during-command.patch
deleted file mode 100644 (file)
index a830346..0000000
--- a/target/linux/ath79/patches-4.19/901-phy-mdio-bitbang-prevent-rescheduling-during-command.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From 66e584435ac0de6e0abeb6d7166fe4fe25d6bb73 Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jogo@openwrt.org>
-Date: Tue, 16 Jun 2015 13:15:08 +0200
-Subject: [PATCH] phy/mdio-bitbang: prevent rescheduling during command
-
-It seems some phys have some maximum timings for accessing the MDIO line,
-resulting in bit errors under cpu stress. Prevent this from happening by
-disabling interrupts when sending commands.
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- drivers/net/phy/mdio-bitbang.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
---- a/drivers/net/phy/mdio-bitbang.c
-+++ b/drivers/net/phy/mdio-bitbang.c
-@@ -17,6 +17,7 @@
-  * kind, whether express or implied.
-  */
- 
-+#include <linux/irqflags.h>
- #include <linux/module.h>
- #include <linux/mdio-bitbang.h>
- #include <linux/types.h>
-@@ -156,7 +157,9 @@ static int mdiobb_read(struct mii_bus *b
- {
-       struct mdiobb_ctrl *ctrl = bus->priv;
-       int ret;
-+      unsigned long flags;
- 
-+      local_irq_save(flags);
-       if (reg & MII_ADDR_C45) {
-               reg = mdiobb_cmd_addr(ctrl, phy, reg);
-               mdiobb_cmd(ctrl, MDIO_C45_READ, phy, reg);
-@@ -169,13 +172,17 @@ static int mdiobb_read(struct mii_bus *b
- 
-       ret = mdiobb_get_num(ctrl, 16);
-       mdiobb_get_bit(ctrl);
-+      local_irq_restore(flags);
-+
-       return ret;
- }
- 
- static int mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val)
- {
-       struct mdiobb_ctrl *ctrl = bus->priv;
-+      unsigned long flags;
- 
-+      local_irq_save(flags);
-       if (reg & MII_ADDR_C45) {
-               reg = mdiobb_cmd_addr(ctrl, phy, reg);
-               mdiobb_cmd(ctrl, MDIO_C45_WRITE, phy, reg);
-@@ -190,6 +197,8 @@ static int mdiobb_write(struct mii_bus *
- 
-       ctrl->ops->set_mdio_dir(ctrl, 0);
-       mdiobb_get_bit(ctrl);
-+      local_irq_restore(flags);
-+
-       return 0;
- }
-