ath79: add kernel 5.10 support

[openwrt/openwrt.git] / target / linux / ath79 / patches-5.10 / 900-mdio_bitbang_ignore_ta_value.patch

diff --git a/target/linux/ath79/patches-5.10/900-mdio_bitbang_ignore_ta_value.patch b/target/linux/ath79/patches-5.10/900-mdio_bitbang_ignore_ta_value.patch
new file mode 100644 (file)
index 0000000..928f241
--- /dev/null
+++ b/target/linux/ath79/patches-5.10/900-mdio_bitbang_ignore_ta_value.patch
@@ -0,0 +1,32 @@
+--- a/drivers/net/mdio/mdio-bitbang.c
++++ b/drivers/net/mdio/mdio-bitbang.c
+@@ -152,7 +152,7 @@ static int mdiobb_cmd_addr(struct mdiobb
+ static int mdiobb_read(struct mii_bus *bus, int phy, int reg)
+ {
+       struct mdiobb_ctrl *ctrl = bus->priv;
+-      int ret, i;
++      int ret;
+ 
+       if (reg & MII_ADDR_C45) {
+               reg = mdiobb_cmd_addr(ctrl, phy, reg);
+@@ -162,19 +162,7 @@ static int mdiobb_read(struct mii_bus *b
+ 
+       ctrl->ops->set_mdio_dir(ctrl, 0);
+ 
+-      /* check the turnaround bit: the PHY should be driving it to zero, if this
+-       * PHY is listed in phy_ignore_ta_mask as having broken TA, skip that
+-       */
+-      if (mdiobb_get_bit(ctrl) != 0 &&
+-          !(bus->phy_ignore_ta_mask & (1 << phy))) {
+-              /* PHY didn't drive TA low -- flush any bits it
+-               * may be trying to send.
+-               */
+-              for (i = 0; i < 32; i++)
+-                      mdiobb_get_bit(ctrl);
+-
+-              return 0xffff;
+-      }
++      mdiobb_get_bit(ctrl);
+ 
+       ret = mdiobb_get_num(ctrl, 16);
+       mdiobb_get_bit(ctrl);