[PATCH 5.17 0468/1126] net: phy: at803x: move page selection fix to config_init

Greg Kroah-Hartman
2022-04-05T08:56:07Z

From: Robert Hancock <robert.hancock@calian.com>

[ Upstream commit 4f3a00c7f5b2cfe4e127fd3fe49b55e1b318c01f ]

The fix to select the copper page on AR8031 was being done in the probe
function rather than config_init, so it would not be redone after resume
from suspend. Move this to config_init so it is always redone when
needed.

Fixes: c329e5afb42f ("net: phy: at803x: select correct page on config init")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/at803x.c | 40 ++++++++++++++++------------------------
1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 29aa811af430..a8794065b250 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -784,25 +784,7 @@ static int at803x_probe(struct phy_device *phydev)
return ret;
}

- /* Some bootloaders leave the fiber page selected.
- * Switch to the copper page, as otherwise we read
- * the PHY capabilities from the fiber side.
- */
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- phy_lock_mdio_bus(phydev);
- ret = at803x_write_page(phydev, AT803X_PAGE_COPPER);
- phy_unlock_mdio_bus(phydev);
- if (ret)
- goto err;
- }
-
return 0;
-
-err:
- if (priv->vddio)
- regulator_disable(priv->vddio);
-
- return ret;
}

static void at803x_remove(struct phy_device *phydev)
@@ -912,6 +894,22 @@ static int at803x_config_init(struct phy_device *phydev)
{
int ret;

+ if (phydev->drv->phy_id == ATH8031_PHY_ID) {
+ /* Some bootloaders leave the fiber page selected.
+ * Switch to the copper page, as otherwise we read
+ * the PHY capabilities from the fiber side.
+ */
+ phy_lock_mdio_bus(phydev);
+ ret = at803x_write_page(phydev, AT803X_PAGE_COPPER);
+ phy_unlock_mdio_bus(phydev);
+ if (ret)
+ return ret;
+
+ ret = at8031_pll_config(phydev);
+ if (ret < 0)
+ return ret;
+ }
+
/* The RX and TX delay default is:
* after HW reset: RX delay enabled and TX delay disabled
* after SW reset: RX delay enabled, while TX delay retains the
@@ -941,12 +939,6 @@ static int at803x_config_init(struct phy_device *phydev)
if (ret < 0)
return ret;

- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- ret = at8031_pll_config(phydev);
- if (ret < 0)
- return ret;
- }
-
/* Ar803x extended next page bit is enabled by default. Cisco
* multigig switches read this bit and attempt to negotiate 10Gbps
* rates even if the next page bit is disabled. This is incorrect
--
2.34.1