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f2f42a54e8
The qca8k patch series brings the numbering to 799. This patch renames 7xx patches to create space for more backports to be added. Signed-off-by: Matthew Hagan <mnhagan88@gmail.com> [rename 729->719] Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
81 lines
2.4 KiB
Diff
81 lines
2.4 KiB
Diff
From ce062a0adbfe933b1932235fdfd874c4c91d1bb0 Mon Sep 17 00:00:00 2001
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From: Ansuel Smith <ansuelsmth@gmail.com>
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Date: Sat, 11 Sep 2021 17:50:09 +0200
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Subject: net: dsa: qca8k: fix kernel panic with legacy mdio mapping
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When the mdio legacy mapping is used the mii_bus priv registered by DSA
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refer to the dsa switch struct instead of the qca8k_priv struct and
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causes a kernel panic. Create dedicated function when the internal
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dedicated mdio driver is used to properly handle the 2 different
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implementation.
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Fixes: 759bafb8a322 ("net: dsa: qca8k: add support for internal phy and internal mdio")
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Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/qca8k.c | 30 ++++++++++++++++++++++--------
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1 file changed, 22 insertions(+), 8 deletions(-)
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--- a/drivers/net/dsa/qca8k.c
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+++ b/drivers/net/dsa/qca8k.c
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@@ -643,10 +643,8 @@ qca8k_mdio_busy_wait(struct mii_bus *bus
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}
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static int
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-qca8k_mdio_write(struct mii_bus *salve_bus, int phy, int regnum, u16 data)
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+qca8k_mdio_write(struct mii_bus *bus, int phy, int regnum, u16 data)
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{
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- struct qca8k_priv *priv = salve_bus->priv;
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- struct mii_bus *bus = priv->bus;
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u16 r1, r2, page;
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u32 val;
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int ret;
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@@ -682,10 +680,8 @@ exit:
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}
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static int
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-qca8k_mdio_read(struct mii_bus *salve_bus, int phy, int regnum)
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+qca8k_mdio_read(struct mii_bus *bus, int phy, int regnum)
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{
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- struct qca8k_priv *priv = salve_bus->priv;
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- struct mii_bus *bus = priv->bus;
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u16 r1, r2, page;
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u32 val;
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int ret;
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@@ -727,6 +723,24 @@ exit:
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}
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static int
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+qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data)
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+{
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+ struct qca8k_priv *priv = slave_bus->priv;
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+ struct mii_bus *bus = priv->bus;
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+
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+ return qca8k_mdio_write(bus, phy, regnum, data);
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+}
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+
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+static int
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+qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum)
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+{
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+ struct qca8k_priv *priv = slave_bus->priv;
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+ struct mii_bus *bus = priv->bus;
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+
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+ return qca8k_mdio_read(bus, phy, regnum);
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+}
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+
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+static int
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qca8k_phy_write(struct dsa_switch *ds, int port, int regnum, u16 data)
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{
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struct qca8k_priv *priv = ds->priv;
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@@ -775,8 +789,8 @@ qca8k_mdio_register(struct qca8k_priv *p
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bus->priv = (void *)priv;
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bus->name = "qca8k slave mii";
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- bus->read = qca8k_mdio_read;
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- bus->write = qca8k_mdio_write;
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+ bus->read = qca8k_internal_mdio_read;
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+ bus->write = qca8k_internal_mdio_write;
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snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d",
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ds->index);
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