On mdio busses the attached phys check for link status in a poller. Add a slice dependency from the mdio bus to the I2C/SPI controller so that we do not end up doing bus accesses while we are in a I2C/SPI access on the same bus already. Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> --- drivers/net/ksz9477.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ksz9477.c b/drivers/net/ksz9477.c index 9665e0f723..1abea9d040 100644 --- a/drivers/net/ksz9477.c +++ b/drivers/net/ksz9477.c @@ -464,6 +464,13 @@ static int microchip_switch_probe(struct device *dev) if (ret) return ret; + if (priv->i2c) + slice_depends_on(mdiobus_slice(ds->slave_mii_bus), + i2c_client_slice(priv->i2c)); + else + slice_depends_on(mdiobus_slice(ds->slave_mii_bus), + spi_device_slice(priv->spi)); + return regmap_multi_register_cdev(priv->regmap[0], priv->regmap[1], priv->regmap[2], NULL); } -- 2.39.2
