Re: [PATCH net-next v1] net: phy: sfp: detect presence via I2C when no MOD_DEF0 GPIO

[Andrew Lunn]

> +/* Probe whether a module is physically present by attempting a single-byte
> + * I2C read of the EEPROM identifier (an empty cage NAKs). Used as the presence
> + * source on boards that do not wire MOD_DEF0 to a GPIO.

Did you try a 0 byte read? That is what tools like i2cdetect use.

	Andrew